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Hitachi G1000 User Manual

Hitachi G1000 User Manual

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Hitachi Virtual Storage Platform G1000
Global-Active Device User Guide
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Getting Help
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Summary of Contents for Hitachi G1000

  • Page 1 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide INKS Contents Product Version Getting Help MK-92RD8072-01...
  • Page 2 Hitachi, Ltd. Hitachi, Ltd., reserves the right to make changes to this document at any time without notice and assumes no responsibility for its use. This document contains the most current information available at the time of publication.

  • Page 3: Table Of Contents

    Server I/O when the GAD status is Suspended..........1-16 Server I/O when the GAD status is Blocked............1-17 Quorum disk and server I/O...................1-17 I/O stoppage detected in the counterpart system..........1-18 I/O stoppage not detected in the counterpart system........1-19 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 4 Suspended pairs depending on failure location (shared quorum disk)..3-15 Response time from the external storage system..........3-15 Planning GAD pairs and pair volumes..............3-16 Maximum number of GAD pairs............... 3-16 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 5 Verifying the virtual LDEV ID in the virtual storage machine of the secondary site ........................4-43 Revising the virtual LDEV ID in the virtual storage machine of the secondary site.......................4-44 Creating a global-active device pair..............4-45 Adding an alternate path to the S-VOL..............4-47 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 6 5 Using Hitachi Command Suite to set up global-active device....5-1 Setting up a global-active device environment............5-2 About global-active device setup................5-2 Prerequisites for global-active device setup using HCS.........5-4 Select primary and secondary storage systems........... 5-4 Configuring remote paths..................5-5 Configuring the quorum disk................5-6 Configuring pair management servers..............
  • Page 7 Procedure for recovering pinned track of a GAD volume...........9-16 Calling Hitachi Data Systems customer support............9-17 A Correspondence between GUI operations and CLI commands....A-1 Correspondence between GUI operations and CCI commands........A-2 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 8 Index viii Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 9: Preface

    Preface This document describes and provides instructions for using the global-active device feature of the Hitachi Virtual Storage Platform G1000 (VSP G1000) storage system. Please read this document carefully to understand how to use this product, and maintain a copy for reference purposes.

  • Page 10: Intended Audience

    Readers of this document should be familiar with the following: • Data processing and RAID storage systems and their basic functions. • The VSP G1000 storage system and the Hitachi Virtual Storage Platform G1000 Hardware Guide. • The Command Control Interface software.

  • Page 11: Document Conventions

    Hitachi Command Control Interface Installation and Configuration Guide, MK-90RD7008 • Hitachi Command Suite User Guide, MK-90HC172 • Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems, MK-92RD8014 • Hitachi Virtual Storage Platform G1000 Hardware Guide, MK-92RD8007 • Hitachi Universal Volume Manager User Guide, MK-92RD8024...

  • Page 12: Convention For Storage Capacity Values

    1 block 512 bytes Accessing product documentation The VSP G1000 user documentation is available on the HDS Support Portal: https://hdssupport.hds.com. Please check this site for the most current documentation, including important updates that may have been made after the release of the product.

  • Page 13: Getting Help

    Include the document title, number, and revision. Please refer to specific sections and paragraphs whenever possible. All comments become the property of Hitachi Data Systems Corporation. Thank you! (All comments become the property of HDS.) xiii Preface Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 14 Preface Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 15: Overview Of Global-Active Device

    □ Quorum disk and server I/O □ GAD pair operations □ Initial copy and differential copy □ GAD components □ User interfaces for global-active device operations □ Configuration workflow for global-active device Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 16: About Global-Active Device

    About global-active device Global-active device (GAD) enables you to create and maintain synchronous, remote copies of data volumes on the Hitachi Virtual Storage Platform G1000 (VSP G1000) storage system. A virtual storage machine is configured in the primary and secondary storage systems using the actual information of the primary system, and the global-active device primary and secondary volumes are assigned the same virtual LDEV number in the virtual storage machine.

  • Page 17: Global-Active Device Solutions

    I/O can continue to the pair volume in the other storage system, as shown in the following illustration, to provide continuous server I/O to the data volume. Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 18: Failover Clustering Without Storage Impact

    In a server-cluster configuration with global-active device, the cluster software is used to perform server failover and failback operations, and the global-active device pairs do not need to be suspended or resynchronized. Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 19: Server Load Balancing Without Storage Impact

    VM 3 from the primary-site server to the secondary-site server. Because the GAD primary and secondary volumes contain the same data, you do not need to migrate any data between the storage systems. Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 20: System Configurations For Gad Solutions

    Migration of a virtual machine Not required Required Server-cluster of a server without using the configuration storage systems Both of the following: Required Required Cross-path configuration Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 21 When I/O on the virtual machine of one server increases, you can migrate the virtual machine to the paired server to balance the load. Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 22 I/O to the paired site. The cluster software is used for failover and failback. Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 23: Gad And Global Storage Virtualization

    The global storage virtualization function is enabled when you install the license for Resource Partition Manager, which is provided with the Storage Virtualization Operating System (SVOS). For more information about Resource Partition Manager, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. Related topics •...

  • Page 24: Monitoring Gad Status

    For instructions on setting virtual IDs, see the Hitachi Command Control Interface Command Reference . Related topics • GAD and global storage virtualization on page 1-9 Monitoring GAD status GAD operations are managed based on the following information: • Pair status •...

  • Page 25: Gad Status Transitions

    Monitoring GAD status on page 1-10 GAD status transitions The GAD status changes depending on the pair operation and failure. The following illustration shows the GAD pair status transitions: 1-11 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 26: Pair Status

    I/O actions on the P-VOL and the S-VOL of a GAD pair. As shown in the following table, the I/O modes displayed by CCI and Command Suite are slightly different. 1-12 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 27: Relationship Between Gad Status, Pair Status, And I/O Mode

    COPY Mirror (RL) COPY Block P-VOL applicable Mirrored PAIR Mirror (RL) PAIR Mirror (RL) P-VOL and applicable S-VOL Suspended Pair PSUS Local SSUS Block P-VOL operation 1-13 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 28: Global-Active Device And Server I/O

    Server I/O when the GAD status is Suspended on page 1-16 • Server I/O when the GAD status is Blocked on page 1-17 • Monitoring GAD status on page 1-10 1-14 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 29: Server I/O When The Gad Status Is Mirrored

    Block, it does not accept I/O from the server, but the data written to the P- VOL is also written to the S-VOL by the primary system, as shown in the following figure. 1-15 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 30: Server I/O When The Gad Status Is Suspended

    The S-VOL's I/O mode is Block, so it does not accept I/O from the server, and the P-VOL's I/O mode is Local, so the data written to the P-VOL is not written to the S-VOL. 1-16 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 31: Server I/O When The Gad Status Is Blocked

    500 ms for the physical path statuses. When the primary and secondary systems cannot communicate, the storage systems take the following actions: 1-17 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 32: I/O Stoppage Detected In The Counterpart System

    • When the pair status is PAIR, read/write continues to the volume that wrote the communication stoppage to the quorum disk. 1-18 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 33: I/O Stoppage Not Detected In The Counterpart System

    (P-VOL or S-VOL) that will receive update data from the host while the pair is suspended. If you 1-19 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 34: Initial Copy And Differential Copy

    I/O while the pair was suspended. If the S-VOL receives server I/O while a pair is suspended, the differential data is copied from the S-VOL to the P-VOL. 1-20 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 35: Gad Components

    Storage systems A VSP G1000 is required at the primary site and at the secondary site. An external storage system for the quorum disk, which is connected to the primary and secondary storage systems using Universal Volume Manager, is also required.

  • Page 36: User Interfaces For Global-Active Device Operations

    Global-active device operations are performed using the GUI software and the CLI software for the Virtual Storage Platform G1000: • Hitachi Command Suite • Command Control Interface 1-22 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 37: Hitachi Command Suite

    Creating the quorum quorum disk attribute to systems disk on page 4-17 External > Setting the port attributes for connecting the external storage system on page 4-17 1-23 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 38 Adding alternate path to the S-VOL Server Adding an alternate Section on path to the S-VOL optimizing HBA on page 4-47 configurations in the Hitachi Command Suite User Guide 1-24 Overview of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 39: System Requirements

    System requirements This chapter provides the system requirements for global-active device (GAD) operations. □ Requirements and restrictions □ Interoperability requirements System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 40: Requirements And Restrictions

    The following table lists the requirements and restrictions for global-active device operations. Item Requirements and restrictions Storage systems at the • Model. Virtual Storage Platform G1000 is required at the primary and secondary primary and secondary sites. sites • Microcode. Microcode (DKCMAIN) version 80-01-4x-00/00 or later is required on the primary and secondary systems.
  • Page 41 A maximum of 65,280 GAD pairs can use one quorum disk. • The emulation type of quorum disk must be OPEN-V. • The minimum size of a quorum disk is 12,292 MB (25,174,016 blocks). System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 42: Interoperability Requirements

    Volume types that can be used for GAD The following table lists the volume types on the Virtual Storage Platform G1000 and specifies whether the volume can be used for GAD operations. Used as GAD P- Used as GAD S-...
  • Page 43 CCI command device Command device Remote command device Encryption License Key Volume whose parity You can use an groups have been encrypted volume in encrypted the external storage System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 44: Dynamic Provisioning / Dynamic Tiering

    Quorum disks can be set only on external volumes that have been configured so that one external volume group is mapped to one external volume. You cannot encrypt a nonencrypted quorum disk in the external storage system from the VSP G1000 at the primary or secondary site. Related topics •...
  • Page 45 You can create three additional, cascaded SI pairs using the SI S-VOLs. This means that up to nine SI pairs can be created with the GAD P-VOL, and nine SI pairs can be created with the GAD S-VOL. System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 46: Limitations When Sharing Gad And Shadowimage Volumes

    GAD pair status. The following tables show SI pair operations and whether they can be performed (Yes, No) with the listed GAD status. The information assumes the required SI status for the operation. System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 47 Cannot be used because S-VOL data is not fixed. Cannot be used because the volume at the GAD copy destination is the same as the volume at the ShadowImage copy destination. System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 48 Table 2-5 ShadowImage operations when GAD status is Blocked SI pair operations Delete Pair pair Create Split Resync Restore pairs/ mode location Read Write status pairs pairs pairs pairs Suspen d copy PSUE Block Primary Secondar 2-10 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 49: Gad Operations And Si Pair Status

    Suspend pairs Delete pairs Resync pairs SI pair Create status P-VOL S-VOL P-VOL S-VOL Forced P-VOL S-VOL pairs selected selected deletion selected selected selected selected SMPL(PD) No COPY PAIR 2-11 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 50: Thin Image

    You can use a GAD P-VOL or S-VOL as a Thin Image (HTI) P-VOL. You can create up to 1,024 Thin Image pairs using a GAD P-VOL, and up to 1,024 Thin Image pairs using a GAD S-VOL. 2-12 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 51: Limitations For Using Both Gad And Thin Image

    When a GAD pair is deleted with the P-VOL specified, the virtual S-VOL's LDEV ID is deleted. If you delete the pair with the S-VOL specified, the P- 2-13 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 52 Cannot be used because the data is being copied and the volume data is not fixed yet. Cannot be used because the volume at the GAD copy destination is the same as the volume at the Thin Image copy destination. 2-14 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 53 Create Split Resync Restore Delete mode location Read Write status pairs pairs pairs pairs pairs PSUE Block Primary Secondar Related topics • Thin Image on page 2-12 2-15 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 54: Gad Operations And Thin Image Pair Status

    Create status P-VOL S-VOL P-VOL S-VOL Forced P-VOL S-VOL Pairs selected selected deletion selected selected selected selected SMPL(PD) No COPY PAIR PSUS COPY(RS- 3, 5 5, 6 PSUE 2-16 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 55: Use Cases For Pairing Gad Volumes With Si Or Hti

    • If you change the access attribute when GAD status is Mirrored or Mirroring, make sure to set the access attribute to both the P-VOL and S- VOLs. 2-17 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 56: Gad Status And I/O Allowance By Access Attribute

    Read Only or Rejected Depends on the Protect Protect attribute* Block Read/Write Read/Write Rejected Rejected Read Only or Read/Write Rejected Rejected Protect Read/Write Read Only or Rejected Rejected Protect 2-18 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 57: Lun Manager

    • Primary system's Target port • P-VOL • Primary system's Initiator port • Secondary system's RCU Target port • S-VOL 2-19 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 58: Gad I/O Added To Performance Monitor

    Blocked Not counted* Not counted* * Reads and writes from a server are illegal requests and cause an error. However, they could be counted as I/O. 2-20 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 59: Number Of I/Os To The Port To Be Added To Performance Monitor

    * Reads and writes by a server are illegal requests and cause an error. However, they might be counted as I/Os. Related topics • Performance Monitor on page 2-19 2-21 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 60 2-22 System requirements Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 61: Planning For Global-Active Device

    □ Storage system preparation □ Planning system performance □ Planning physical paths □ Planning ports □ Planning the quorum disk □ Planning GAD pairs and pair volumes Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 62: Storage System Preparation

    The following table lists and describes the SOMs that apply to remote copy operations, including global-active device and TrueCopy. The settings of these SOMs affects both global-active device and TrueCopy operations. For a list of the SOMs, see the Hitachi Virtual Storage Platform G1000 Hardware Guide. Planning for global-active device...

  • Page 63: Planning System Performance

    Hitachi Data Systems customer support can help you analyze your workload and optimize copy operations. Using workload data (MB/s and IOPS), you can determine the appropriate amount of bandwidth, number of physical paths, and number of ports for your global-active device system.

  • Page 64: Planning Physical Paths

    After you incorporate the VSP G1000 settings to HDLM, the attribute of the HDLM path to which host mode option 78 was set changes to non-owner path. If host mode option 78 is not set to the path, the HDLM path attribute changes to owner path.

  • Page 65: Fibre-Channel Connections

    An authorized third-party channel extender is required. No special settings are required for VSP G1000 if switches are used in a Fibre-Channel environment. Long-wave (optical single-mode) cables can be used for direct connection at a maximum distance of 10 km. The maximum distance that might result in the...

  • Page 66: Connection Types

    • Host mode option 51 (Round Trip Set Up Option). For details about host mode options, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. The fabric and topology settings depend on the settings of packages, the protocol used for the connection between the storage systems, and the setting of host mode option 51.

  • Page 67: Connection Using Switches

    Specify the topology as follows: • NL_port: Fabric ON and FC-AL • N_port: Fabric ON and Point-to-Point Switches from some vendors (for example, McData ED5000) require F_port. Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 68: Connection Using Channel Extenders

    Host mode option 50 (BB Credit Set Up Option2) • Host mode option 51 (Round Trip Set Up Option). For host mode options, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. The fabric and topology settings depend on the settings of packages, and protocol used for the connection between storage systems, and the host mode option (HMO) 51 setting.

  • Page 69: Planning Ports

    Initiator and RCU Target ports required for your system. The following describes the attributes for the ports on the VSP G1000. For details on setting port attributes, see the Provisioning Guide for Open Systems.

  • Page 70: Planning The Quorum Disk

    I/O from servers continues if any failure occurs at the primary site, the secondary site, or the site where the external storage system is installed. 3-10 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 71: Relationship Between The Quorum Disk And Number Of Remote Connections

    3-11 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 72: Suspended Pairs Depending On Failure Location (Quorum Disk Not Shared)

    Suspended pairs depending on failure location (quorum disk not shared) on page 3-13 • Suspended pairs depending on failure location (shared quorum disk) on page 3-15 3-12 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 73 The following figure shows the relationship between the failure locations and the GAD pair suspended by the failure. 3-13 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 74 Path to the quorum disk 2 Not suspended Suspended Quorum disk 2 Not suspended Suspended Related topics • Relationship between the quorum disk and number of remote connections on page 3-11 3-14 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 75: Response Time From The External Storage System

    GAD pairs might be suspended by some failures. Monitor regularly the response time of the quorum disks using Performance Monitor from the primary storage system or secondary storage 3-15 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 76: Planning Gad Pairs And Pair Volumes

    If CCI is used in the In-band method, and if one virtual volume is used as a command device, the maximum number of GAD pairs is 63,230. Note, however, that the maximum number of pairs in VSP G1000 is subject to restrictions, such as the number of cylinders used in volumes or the number of bitmap areas used in volumes.

  • Page 77: Calculating The Number Of Cylinders

    * 15) / 122,752) = 6 The calculation result is six bitmap areas in total. Related topics • Maximum number of GAD pairs on page 3-16 3-17 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 78: Calculating The Maximum Number Of Pairs

    The total number of bitmap areas available in the storage system is 65,536. The number of bitmap areas is shared by TrueCopy, TrueCopy for Mainframe, Universal Replicator, and Hitachi Universal Replicator for Mainframe. If you use these software products, subtract the number of bitmap areas required...
  • Page 79 The copied virtual emulation type of the P-VOL is not the same as the original emulation type of the S-VOL. The virtual emulation type includes the virtual CVS attribute (-CVS). Because the VSP G1000 does not support the LUSE, LUSE configuration (*n) volumes are not supported as P-VOLs. 3-19...
  • Page 80 3-20 Planning for global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 81: Configuration And Pair Management Using Cci

    □ Connecting the primary and secondary storage systems □ Creating the quorum disk □ Setting up the secondary system □ Updating the CCI configuration definition files □ Creating the GAD pair Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 82 □ Adding an alternate path to the S-VOL Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 83: Global-Active Device System Configuration

    (alternate path or cluster or both, depending on system configuration). • Primary and secondary sites with VSP G1000 systems at each site. The following system components are configured on the storage systems: Dynamic Provisioningvolumes that will become the primary and ¢...

  • Page 84: Primary Storage System Settings

    Primary storage system Model Serial number VSP G1000 11111 Primary volume Actual LDEV ID Port attribute Port name LU number 22:22 Target CL1-A Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 85: Secondary Storage System Settings

    External volume for the quorum disk External Actual Port volume Path Quorum Port name LDEV ID attribute group group ID number disk ID number 88:88 External CL5-C Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 86: Cci Server Configuration

    Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 87: External Storage System Settings

    Note: This chapter provides CCI examples and instructions using the in-band method of issuing CCI commands. You can also issue GAD commands using the out-of-band method. For details about the in-band and out-of-band methods, see the Hitachi Command Control Interface User and Reference Guide. Configuration and pair management using CCI...

  • Page 88: Initial State

    Install an external storage system for the quorum disk. The storage system must be supported by Universal Volume Manager for connection to the VSP G1000 as external storage. Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 89: Verifying The Physical Data Paths

    When maintenance is performed on the physical paths between storage systems, the GAD pairs must be suspended. Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 90: Creating The Command Devices

    0 in the primary system and in the secondary system. After the command devices have been created, host recognition must be set to the command devices. 4-10 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 91: Creating The Configuration Definition Files

    Using Command Suite , allocate a command device in Resource Group 0 in both storage systems and enable user authentication. For details about creating a command device, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. If necessary, change the topology and fabric settings for the ports defined to the command devices.

  • Page 92: Starting Cci

    Hitachi Command Control Interface Installation and Configuration Guide. The examples below show files on a Windows host. Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 11111, enter 311111.

  • Page 93: Connecting The Primary And Secondary Storage Systems

    GAD command and data transfer. Initiator ports and RCU Target ports are required on both the primary and secondary storage systems. 4-13 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 94 Use the same procedure to change the port attributes for the alternate paths. The alternate paths are not shown in the illustration. Check command and output examples Display the port information for the primary system. 4-14 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 95: Adding Remote Connections

    Adding remote connections Add bidirectional remote connections between the primary and secondary storage systems. Specify the same path group ID to the bidirectional remote connections. 4-15 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 96 Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 11111, enter 311111. Procedure Add a remote connection with path group ID 0 from primary system port (CL3-A) to secondary system port (CL3-C).

  • Page 97: Creating The Quorum Disk

    This section provides instructions for setting the ports on the primary and secondary systems to the "External" attribute in preparation for connecting to the external storage system. 4-17 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 98 Display the port information for the secondary system. Confirm that the port attributes have been changed as intended. raidcom get port -IH1 PORT TYPE ATTR LPID CONN Serial# 4-18 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 99: Creating External Volume Groups

    E_VOL_ID_C value (volume identifier included in the SCSI Inquiry command of the external volume) is displayed for the primary and secondary storage systems. For details about creating external volume groups, see the Hitachi Universal Volume Manager User Guide. 4-19 Configuration and pair management using CCI...
  • Page 100 -path_grp 1 -external_grp_id 1-2 -port CL5-C -external_wwn 50060e8007823521 -lun_id 0 -IH1 Confirm that asynchronous command processing has completed. 4-20 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 101: Creating External Volumes

    Using capacity in the external system, you will create virtual external volumes on the primary and secondary systems that will be mapped to the quorum disk. 4-21 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 102 -external_grp_id 1-2 -ldev_id 0x8888 -capacity all -IH1 Confirm that asynchronous command processing has completed. raidcom get command_status -IH1 HANDLE SSB1 SSB2 ERR_CNT Serial# Description 00c3 322222 4-22 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 103 E_PORTs : CL5-C-0 0 50060e8007823521 LDEV_NAMING : STS : NML OPE_TYPE : NONE OPE_RATE : 100 MP# : 0 SSID : 0005 RSGID : 0 4-23 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 104: Setting External Volumes As Quorum Disks

    The serial number and model of the paired storage system is specified for the -quorum_enable option of the raidcom modify ldev command. Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 11111, enter 311111.
  • Page 105 QRP_ID (model of the storage system that forms a GAD pair) ¢ raidcom get ldev -ldev_id 0x8888 -fx -IH1 Serial# : 322222 LDEV : 8888 SL : 0 CL : 0 4-25 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 106: Setting Up The Secondary System

    Setting the reservation attribute on the S-VOL on page 4-33 • Creating additional host groups in a VSM on page 4-35 • Creating a pool on page 4-36 4-26 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 107: Creating A Resource Group (P-Vol Not Registered To A Vsm)

    The following illustration shows the creation of a resource group when the P-VOL is not already registered to a virtual storage machine. Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 11111, enter 311111.

  • Page 108: Creating A Resource Group (P-Vol Registered To A Vsm)

    P-VOL is registered. 4-28 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 109: Reserving A Host Group Id

    Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 12345, enter 312345. Procedure Specify the serial number and model of the virtual storage machine to which the P-VOL is registered for the virtual storage machine you are creating on the secondary storage system.
  • Page 110 -port CL1-C -key host_grp -resource 1 -IH1 PORT GROUP_NAME Serial# HMD HMO_BITs CL1-C 1C-G00 322222 WIN CL1-C HAVol 322222 WIN 4-30 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 111: Deleting The Virtual Ldev Id Of The S-Vol

    Delete temporarily the virtual LDEV ID of the volume to be added to the virtual storage machine. Procedure Delete the virtual LDEV ID of the volume (0x4444). raidcom unmap resource -ldev_id 0x4444 -virtual_ldev_id 0x4444 -IH1 4-31 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 112: Reserving An Ldev Id For The S-Vol

    In the newly created resource group, you will reserve an LDEV ID so that the volume is available to become the target volume of a GAD pair. 4-32 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 113: Setting The Reservation Attribute On The S-Vol

    When you create a GAD pair, the P-VOL's LDEV ID is set as the virtual LDEV ID of the S-VOL. Before the pair can be created, the GAD reservation 4-33 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 114 SSID : - RSGID : 1 Note: If you need to release the reservation attribute, use the raidcom unmap resource command (example: raidcom unmap resource -ldev_id 4-34 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 115: Creating Additional Host Groups In A Vsm

    Procedure (for CL1-C-1) Create a host group (HAVol) with host group ID 1 on port (CL1-C). raidcom add host_grp -port CL1-C-1 -host_grp_name HAVol -IH1 4-35 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 116: Creating A Pool

    Reserving a host group ID on page 4-29 Creating a pool After creating host groups, you need to create a pool volume, format the volume, and create a Dynamic Provisioning pool. 4-36 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 117 Provisioning whose pool ID is 0 and whose pool name is HA_POOL. raidcom add dp_pool -pool_id 0 -pool_name HA_POOL -ldev_id 0x7777 -IH1 Confirm that asynchronous command processing has completed. 4-37 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 118: Creating The S-Vol

    Specify the volume that will become the S-VOL using the reservation attribute and LDEV ID mapped earlier. The S-VOL must be the same size as the P-VOL. 4-38 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 119 In the Dynamic Provisioning pool with pool ID 0, create a virtual volume (DP-VOL) with a capacity of 1,024,000 blocks and LDEV ID = 0x4444. 4-39 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 120: Adding An Lu Path To The S-Vol

    Add an LU path between the port connected to the server and the S-VOL. The host does not recognize the S-VOL, because the virtual LDEV ID has not yet been defined to the volume for the S-VOL. 4-40 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 121: Updating The Cci Configuration Definition Files

    P-VOL and S-VOL. • Shutting down CCI on page 4-42 • Editing CCI configuration definition files on page 4-42 4-41 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 122: Shutting Down Cci

    Make sure to specify the actual LDEV IDs for the GAD pair volumes, not the virtual LDEV IDs. Note: When specifying the serial number for VSP G1000 using CCI, add a “3” at the beginning of the serial number. For example, for serial number 11111, enter 311111.

  • Page 123: Restarting Cci

    Specify the virtual storage machine for HORCM_VCMD of the configuration definition file, and then start CCI. Procedure (Windows shown) Start instances (100 and 101) for confirming the virtual LDEV IDs. 4-43 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 124: Revising The Virtual Ldev Id In The Virtual Storage Machine Of The Secondary Site

    -ldev_id 0x2222 -fx -IH101 Serial# : 311111 PHY_Serial# : 322222 LDEV : 2222 PHY_LDEV : fefe SL : - CL : - 4-44 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 125: Creating A Global-Active Device Pair

    If you create a GAD pair at the secondary storage system when the available pool capacity below the warning threshold is less than the capacity of the secondary volume, SIM 4-45 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 126 (CL1-A-0, 0, 0)311111 2222.P-VOL PAIR NEVER , 4444 - - L/M oraHA dev1(R) (CL1-C-0, 0, 0)322222 4444.S-VOL PAIR NEVER , 2222 - - L/M 4-46 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 127: Adding An Alternate Path To The S-Vol

    Caution: If Hitachi Dynamic Link Manager (HDLM) is installed on the server and host mode option 78 is set to the host group of VSP G1000, add the alternate path, and then execute the dlnkmgr refresh -gad command to incorporate the VSP G1000 settings to HDLM.
  • Page 128 4-48 Configuration and pair management using CCI Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 129: Using Hitachi Command Suite To Set Up Global-Active Device

    Using Hitachi Command Suite to set up global-active device This chapter describes how to use Hitachi Command Suite to set up global- active device. □ Setting up a global-active device environment □ Monitoring and managing global-active device pairs □ Recovering from global-active device failures □...

  • Page 130: Setting Up A Global-Active Device Environment

    If you close the setup window and reopen it later, the completed tasks remain identified. Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 131 Configuring the quorum disk on page 5-6 • Configuring pair management servers on page 5-8 • Configuring the virtual storage machine on page 5-9 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 132: Prerequisites For Global-Active Device Setup Using Hcs

    Before performing global-active device setup tasks using HCS, ensure the following prerequisites are met: • The Virtual Storage Platform G1000 microcode version for both the primary and secondary storage systems must be 80-02-01-XX/XX or later to create global-active device pairs where the P-VOLs already have a virtual LDEV ID assigned and are managed by user-defined virtual storage machines, as with Nondisruptive Migration.

  • Page 133: Configuring Remote Paths

    Tip: The MCU/RCU checkbox is disabled by design for the global- active device dialog. On the Define Remote Path page: Ensure that the Select reverse direction path checkbox is selected. Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 134: Configuring The Quorum Disk

    Tip: Port pairs on the left (Local -> Remote) are primary to secondary storage remote paths. Port pairs on the right (Local <- Remote) are the secondary to primary storage remote paths. Note: For more information about remote paths, see the Hitachi Command Suite Replication Manager User Guide. Result The remote paths between the primary and secondary storage systems are configured, and can be confirmed by clicking Show Details.
  • Page 135 Repeat steps 12 through 14 for the secondary storage system. Note that for the secondary storage system, the secondary storage system name will be displayed. Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 136: Configuring Pair Management Servers

    Repeat steps 2 through 10 for the secondary storage system. For Host, be sure to specify the pair management server for the secondary storage system. Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 137: Configuring The Virtual Storage Machine

    IDs, Storage Ports and Host Group Numbers to the virtual storage machine by clicking the respective tabs. Note: The primary storage system resources already belong to the virtual storage machine. Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 138: Monitoring And Managing Global-Active Device Pairs

    You cannot allocate Basic volumes. Click Advanced Options for further configuration. In LUN Path Options: Edit LUN paths from primary storage ports to hosts. 5-10 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 139 Click Show Plan and confirm that the information in the plan summary is correct. If changes are required, click Back. 5-11 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 140: Allocating Global-Active Device Pairs Using Existing Volumes

    On the Primary tab, configure the following options: Select the primary Storage system, Virtual Storage Machine, and Volume type (HDP or HDT). 5-12 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 141 Click Show Plan and confirm that the information in the plan summary is correct. If changes are required, click Back. 5-13 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 142: Adding Redundancy To Open-Allocated Volumes

    ID number which will be validated as an available instance ID. You can also specify a UDP Port number for the instance. 5-14 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 143 Reclaiming zero pages is also automatically performed. Related topics • Allocating global-active device pairs on page 5-10 5-15 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 144: Checking Global-Active Device Pair Status

    Review global-active device status using one or more of the following options: On the Resources tab, select Storage Systems, select a Virtual ¢ Storage Platform G1000, select Volumes, and then list Open- Allocated volumes to view global-active device information, as follows: - Volume Attribute...

  • Page 145: Protecting Global-Active Device Pairs

    Note: When you add a copy group to an existing copy pair, it is known as a multi-target configuration when created on the primary side and a cascade on the secondary side. For more information, see the Hitachi Command Suite Replication Manager User Guide.

  • Page 146: Monitoring Global-Active Device Pair Performance

    (location), for example VSP G1000 and HDP volumes. Click List of added volumes to view analysis targets, including global-active device volumes. 5-18 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 147: Unallocating Global-Active Device Pairs

    (horcmN.conf) could be deleted as a result. 5-19 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 148: Unallocating Individual Global-Active Device Volumes

    Discontinuing a global-active device environment on page 5-23 Unallocating individual global-active device volumes Individual global-active device primary or secondary volumes can be unallocated. 5-20 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 149: Recovering From Global-Active Device Failures

    This module provides an overview of global-active device failures, where to find detailed information, and specific tasks that can be performed from HCS. 5-21 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 150: About Global-Active Device Failures

    If you confirm a failed HBA, replace it. ¢ Using multi-path software, resume I/O for the host on the recovered path. 5-22 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 151: Discontinuing A Global-Active Device Environment

    From General Tasks, select Unvirtualize Volumes. In the Unvirtualize Volumes dialog box, select the external storage system (quorum) and the internal storage system (primary or secondary 5-23 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 152 The global-active device environment no longer exists. Related topics • Unallocating global-active device pairs on page 5-19 • Unallocating individual global-active device volumes on page 5-20 5-24 Using Hitachi Command Suite to set up global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 153: Disaster Recovery Of Global-Active Device

    □ Pair condition and recovery: path failure from the primary to secondary system □ Pair condition and recovery: path failure from the secondary to primary system □ Pair condition and recovery: primary system failure Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 154 □ Recovering the storage systems from a primary site failure (external system at primary site) □ Reversing the P-VOL and S-VOL □ Resolving failures in multiple locations Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 155: Failure Locations

    Server None None (normal) (normal) Path between the Path between the None None server and the storage server and the primary (normal) (normal) system storage system Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 156 2180XX Depends on the failure DD0XYY type DD3XYY Quorum disk Path between the 21D0XX DD2XYY primary system and 21D2XX quorum disk DD2XYY DEF0ZZ EF5XYY EFD000 FF5XYY Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 157: Sims Related To Gad

    FF5XYY FF5XYY Notes: Pairs are not suspended and do not become inaccessible for: Failure in hardware used for redundancy in the VSP G1000, such as HDD, cache, CHA, DKA, and ¢ Failure in redundant physical paths ¢ The volume is not accessible if a failure occurs while the S-VOL pair status is COPY, SSUS, or PSUE.
  • Page 158 GAD for this volume was suspended (Due to an internal error condition detected) DD3XYY Status of the P-VOL was not consistent with the S-VOL DEE0ZZ Quorum Disk Restore Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 159: Pair Condition Before Failure

    PAIR (Mirror PAIR (Mirror Both P-VOL and (RL)) (RL)) S-VOL COPY (Mirror COPY (Block) P-VOL (RL)) PSUS/PSUE SSUS/PSUE P-VOL (Local) (Block) PSUS/PSUE SSWS (Local) S-VOL (Block) Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 160: Pair Condition And Recovery: Server Failures

    The following table shows transitions for pair status and I/O mode, the volumes that are accessible from the server, and the location of the latest Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 161: Recovering From A Path Failure Between The Server And Primary System

    Recovering from a path failure between the server and primary system The following figure shows the failure area and recovery when the path between the server and primary storage system fails. Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 162: Recovering From A Path Failure Between The Server And Secondary System

    Recovering from a path failure between the server and secondary system The following figure shows the failure area and recovery when the path between the server and secondary storage system fails. 6-10 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 163: Pair Condition And Recovery: P-Vol Failure (Ldev Blockade)

    P-VOL due to LDEV blockade. 6-11 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 164: Recovering The P-Vol (Pair Status: Pair)

    Pair condition before failure on page 6-7 Recovering the P-VOL (pair status: PAIR) The following figure shows the failure area and recovery when the pair suspends due to a P-VOL failure. 6-12 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 165 For a blocked volume, BLK is indicated in the STS column. Using the alternate path software, delete the alternate path to the volume that cannot be accessed from the server. 6-13 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 166 From the secondary storage system, create the pair specifying the S- VOL's actual LDEV ID. paircreate -g oraHA -f never -vl -jq 0 -d dev1 -IH1 6-14 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 167: Pair Condition And Recovery: S-Vol Failure (Ldev Blockade)

    S-VOL due to LDEV blockade. 6-15 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 168: Recovering The S-Vol (Pair Status: Pair)

    Pair condition before failure on page 6-7 Recovering the S-VOL (pair status: PAIR) The following figure shows the failure area and recovery when the pair suspends due to an S-VOL failure. 6-16 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 169 STS : BLK (snip) For the blocked volume, BLK is indicated in the STS column. Using the alternate path software, delete the alternate path to the volume. 6-17 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 170 From the primary storage system, create the pair specifying the P- VOL's actual LDEV ID. paircreate -g oraHA -f never -vl -jq 0 -d dev1 -IH0 6-18 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 171: Pair Condition And Recovery: Full Pool For The P-Vol

    P-VOL S-VOL P-VOL P-VOL S-VOL S-VOL PAIR (Mirror PAIR (Mirror PSUE SSWS S-VOL (RL)) (RL)) (Block) (Local) 6-19 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 172: Recovering A Full Pool For The P-Vol (Pair Status: Pair)

    Recovering a full pool for the P-VOL (pair status: PAIR) The following figure shows the failure area and recovery when the pair suspends due to a full pool of the P-VOL. 6-20 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 173 Increase an available capacity to the pool on which the full pool was detected. For details on how to increase an available pool capacity, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. Resynchronize a GAD pair.

  • Page 174: Pair Condition And Recovery: Full Pool For The S-Vol

    (Block) (Block) (RL)) PSUS/PSUE SSUS/PSUE PSUS/PSUE SSUS/PSUE P-VOL (Local) (Block) (Local) (Block) PSUS/PSUE SSWS PSUS/PSUE SSWS S-VOL (Block) (Local) (Block) (Local) • Primary system: DD1XYY 6-22 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 175: Recovering A Full Pool For The S-Vol (Pair Status: Pair)

    Increase an available capacity to the pool on which the full pool was detected. For details on how to increase an available pool capacity, see the Hitachi Virtual Storage Platform G1000 Provisioning Guide for Open Systems. Resynchronize a GAD pair.

  • Page 176: Pair Condition And Recovery: Path Failure From The Primary To Secondary System

    6-24 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 177: Recovering Paths From The Primary To Secondary System (Pair Status: Pair)

    The following figure shows the failure area and recovery when the pair suspends due to path failure from the primary system to the secondary system. 6-25 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 178 PairVol(L/R) (Port#,TID, LU),Seq#,LDEV#.P/S,Status, Fence, %,P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W oraHA dev1(L) (CL1-A-0, 0, 0)311111 2222.P-VOL PAIR NEVER , 4444 - - L/M 6-26 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 179: Pair Condition And Recovery: Path Failure From The Secondary To Primary System

    P-VOL (Mirror (Block) (Mirror (RL)) (Block) (RL)) PSUS/PSUE SSUS/PSUE PSUS/PSUE SSUS/PSUE P-VOL (Local) (Block) (Local) (Block) PSUS/PSUE SSWS PSUS/PSUE SSWS S-VOL (Block) (Local) (Block) (Local) 6-27 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 180: Recovering Paths From The Secondary To Primary System (Pair Status: Pair)

    Steps for recovery Reconnect the physical path or reconfigure the SAN to recover the path from the secondary system to the primary system. 6-28 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 181: Pair Condition And Recovery: Primary System Failure

    The following table shows transitions for pair status and I/O mode, the volumes accessible from the server, and location of the latest data when you can no longer use the primary system due to failure. 6-29 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 182 Resynchronize or recreate a pair using the procedure in the following table whose pair status and I/O mode match your pair's status and I/O mode. 6-30 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 183: Pair Condition And Recovery: Secondary System Failure

    The following table shows transitions for pair status and I/O mode, the volumes accessible from the server, and location of the latest data when you can no longer use the secondary system due to failure. 6-31 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 184 Resynchronize or recreate the pair using the procedure in the following table whose pair status and I/O mode match your pair's status and I/O mode. 6-32 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 185: Pair Condition And Recovery: Path Failure From The Primary To External System

    6-33 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 186: Recovering The Path From The Primary To External System (Pair Status: Pair)

    P-VOL I/O mode is Local, and the server continues I/O to the P-VOL. 6-34 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 187 Confirm that the primary storage system recognizes the external volume as a quorum disk by specifying the LDEV ID of the quorum disk. raidcom get ldev -ldev_id 0x9999 -fx -IH0 (snip) 6-35 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 188: Pair Condition And Recovery: Path Failure From The Secondary To External System

    The following table shows transitions for pair status and I/O mode, the volumes that are accessible from the server, and the location of the latest 6-36 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 189: Recovering The Path From The Secondary To External System (Pair Status: Pair)

    P-VOL I/O mode is Local, and the server continues I/O to the P-VOL. 6-37 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 190 Confirm that the secondary system recognizes the external volume as a quorum disk by specifying the LDEV ID of the quorum disk. raidcom get ldev -ldev_id 0x8888 -fx -IH1 （snip） QRDID : 0 6-38 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 191: Pair Condition And Recovery: Quorum Disk Failure

    The following table shows transitions for pair status and I/O mode, the volumes that are accessible from the server, and the location of the latest data when you can no longer use the quorum disk volume. 6-39 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 192: Recovery Of The Quorum Disk (Pair Status: Pair)

    P-VOL I/O mode is Local and the server continues I/O to the P- VOL. The following figure shows the failure area and recovery when the pair suspends due to quorum disk failure. 6-40 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 193 Note: Steps 1 and 2 below describe the recovery procedure for an external storage system made by Hitachi, for example, VSP. If you are using another vendor's storage system as external storage, follow the vendor's recovery procedure for the storage system.
  • Page 194 - LBA capacity (the capacity must be larger than the quorum disk before the failure occurred) - CVS attribute For details about confirming this information, see the Hitachi Universal Volume Manager User Guide. For details about confirming the CVS attribute, see...
  • Page 195 -g oraHA -fxce -IH0 Group PairVol(L/R) (Port#,TID, LU),Seq#,LDEV#.P/S,Status, Fence, %,P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W oraHA dev1(L) (CL1-A-0, 0, 0)311111 2222.P-VOL PAIR 6-43 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 196 Define Config & Install or ECC/LDEV, which remains the initial value of the Number of LDEVs on the Device Emulation Type Define window. 6-44 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 197: Pair Condition And Recovery: External System Failure

    S-VOL (Block) (Local) (Block) (Local) • Primary system: 21D0XY, 21D2XX, DD2XYY, DEF0ZZ, EF5XYY, EFD000, FF5XYY • Secondary system: 21D0XY, 21D2XX, DD2XYY, DEF0ZZ, EF5XYY, EFD000, FF5XYY 6-45 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 198: Pair Condition And Recovery: Other Failures

    • Primary system: SIM varies depending on the failure type • Secondary system: SIM varies depending on the failure type Recovery procedure Recover the system. 6-46 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 199: Recovery Procedure For Gad Pair Suspension Due To Other Failures

    P-VOL. Confirm that the pair status of the P-VOL and the S-VOL of the GAD pair has changed to PAIR (Mirror (RL)). 6-47 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 200: Recovering The Storage Systems From A Primary Site Failure (External System At Primary Site)

    In this case, the GAD pair is suspended, and access to the GAD volumes stops. 6-48 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 201 DEF0ZZ Note: Hardware such as HDD, cache, CHA, DKA and MPB is redundant in the VSP G1000 configuration. Even if a failure occurs in a part of redundant hardware, the failure does not cause a GAD pair being suspended, or an inaccessible GAD volume. The...
  • Page 202 From the secondary storage system, recreate a GAD pair. Using the alternate path software, add a path to the GAD P-VOL, and then resume I/Os. 6-50 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 203: Reversing The P-Vol And S-Vol

    (CL1-A-0, 0, 0)311111 2222.P-VOL PAIR NEVER , 4444 - - L/M oraHA dev1(R) (CL1-C-0, 0, 0)322222 4444.S-VOL PAIR NEVER , 2222 - - L/M 6-51 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 204: Resolving Failures In Multiple Locations

    If GAD pairs are suspended, resynchronize the pairs. If the pairs cannot be resynchronized, delete the pairs and then create them again. Related topics • SIMs related to GAD on page 6-6 6-52 Disaster recovery of global-active device Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 205: Planned Outage Of Global-Active Device Storage Systems

    □ Planned power off/on of the primary and external storage systems □ Planned power off/on of the secondary and external storage systems □ Planned power off/on of all GAD storage systems Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 206: Planned Power Off/On Of The Primary Storage System

    Direct server I/O to the storage system at the primary site. Using the alternate path software, stop I/O from servers to the storage system at the secondary site. Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 207: Powering On The Secondary Storage System

    PSUS(Local) and that the pair status of the S-VOLs has changed to SSUS(Block). pairdisplay -g oraHA -fcxe -IH0 On the primary and secondary storage systems, disconnect the quorum disks. Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 208: Powering On The External Storage System (I/O At Primary Site)

    PAIR (Mirror (RL)). pairdisplay -g oraHA -fcxe -IH0 Using the alternate path software, resume server I/O to the storage system at the secondary site. Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 209: Planned Power Off/On Of The External Storage System (I/O At Secondary Site)

    Confirm that the external volumes of the primary and secondary storage systems are recognized as quorum disks. raidcom get ldev -ldev_id 0x8888 -IH1 Check for SIMs about quorum disk blockade, and delete the SIMs. Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 210: Planned Power Off/On Of The Primary And Secondary Storage Systems

    -g oraHA -IH0 Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)). Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 211: Planned Power Off/On Of The Primary And External Storage Systems

    Check for SIMs about path blockage, and delete the SIMs. On the primary and secondary storage systems, establish connections to the quorum disks. raidcom check_ext_storage external_grp -ldev_id 0x8888 -IH1 Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 212: Planned Power Off/On Of The Secondary And External Storage Systems

    If this SIM is issued, delete the SIM after powering on the storage system and reconnecting the quorum disk. *ZZ: quorum disk ID Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 213: Powering On The Secondary And External Storage Systems

    Using the alternate path software, stop server I/O to the primary and secondary storage systems. On the primary storage system, suspend the GAD pairs. pairsplit -g oraHA -r -IH0 Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 214: Powering On The Primary, Secondary, And External Storage Systems

    Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs has changed to PAIR (Mirror (RL)). pairdisplay -g oraHA -fcxe -IH0 7-10 Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 215 Using the alternate path software, resume I/O from the servers to the storage systems at the primary and secondary sites. 7-11 Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 216 7-12 Planned outage of global-active device storage systems Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 217: Data Migration And Volume Reuse

    (GAD) and discontinuing GAD operations after the migration so that the volumes at both sites can be reused. □ Workflow for data migration □ Reusing volumes after data migration Data migration and volume reuse Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 218: Workflow For Data Migration

    The following figure shows the system configuration for data migration using global-active device. The storage system that is the migration source (primary site) must be a VSP G1000, and the storage system that is the migration target (secondary site) must be a VSP G1000 (or later).

  • Page 219: Reusing Volumes After Data Migration

    If the same virtual LDEV ID is used in other storage systems or virtual storage machines with the same serial number Data migration and volume reuse Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 220: Reusing A Volume That Was A P-Vol

    Example for setting virtual LDEV ID (0xe000) for volume (0x4444): raidcom map resource -ldev_id 0x4444 -virtual_ldev_id 0xe000 Specify a new port and host group for the volume, and set an LU path. Data migration and volume reuse Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 221: Troubleshooting

    □ Error codes and messages □ Troubleshooting for CCI □ SIM reports of GAD operations □ Procedure for recovering pinned track of a GAD volume □ Calling Hitachi Data Systems customer support Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 222: General Troubleshooting

    SVP was changed. updated. Disable the monitoring switch, and then enable it again. For details about the monitoring switch, see Hitachi Virtual Storage Platform G1000 Performance Guide. Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 223: Troubleshooting Related To Remote Path Status

    • The following network relaying devices are correctly configured, and can be properly used: Connectors ¢ Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 224 • The following network relaying devices are correctly configured, and can be properly used: Connectors ¢ Cables ¢ Switches (zoning settings) ¢ Channel extenders (if ¢ channel extenders are connected) Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 225 Incorrect port storage system is correct. number of the • The cable between the ports of remote storage the local storage system and system the remote storage system or Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 226 Then, recover the remote path.* order. A relaying device is Repair the relaying device. out of order. Then, recover the remote path.* The cable is Replace the cable. damaged. Then, recover the remote path.* Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 227: Error Codes And Messages

    Use the raidcom delete rcu_path command to remove the remote path, and then use the raidcom add rcu_path command to recreate the remote path. If the remote path is still not recovered after these operations, contact Hitachi Data Systems customer support.
  • Page 228 For details about the error codes issued by the CCI configuration definition command (raidcom), see the Hitachi Command Control Interface User and Reference Guide. If the problem persists, send the contents of the /HORCM/log* folder to Hitachi Data Systems customer support.
  • Page 229 Dynamic Provisioning or Dynamic Tiering. FA0F The device type of the volume that has been specified as the primary volume is not supported. Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 230 The pair status of the volume that has been specified as the secondary volume is not PSUS or PSUE. FA31 The pair status of the volume that has been specified as the secondary volume is not SMPL. 9-10 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 231 The number of remote paths is less than the minimum number. FA44 You cannot create the GAD pair because the volume that has been specified as the secondary volume is a mainframe volume. 9-11 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 232 The command operating on the GAD pair was rejected because the -P option was specified for the pairsplit command. FBE9 The command operating on the GAD pair was rejected because the -rw option was specified for the pairsplit command. 9-12 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 233 • No GAD program products are installed. • No shared memory for GAD has been added. If none of the above applies, contact Hitachi Data Systems customer support. FC12 The same operation or a different operation is already being executed.
  • Page 234 The pair status of the volume paired with the volume specified for the swap resync is not PSUS or PSUE. • The I/O mode of the volume paired with the volume specified for the swap resync is not Block. 9-14 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 235 The paired volume is the secondary volume, but an instruction specifies that the secondary volume be deleted. • The pair status is not PSUS, SSUS, SSWS, or PSUE. • The I/O mode is not Block. 9-15 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 236: Sim Reports Of Gad Operations

    If SNMP is installed on the storage systems, SIMs trigger an SNMP trap that is sent to the corresponding server. For details about SNMP operations, see the Hitachi Command Suite User Guide or the Hitachi SNMP Agent User Guide. Related topics •...

  • Page 237: Calling Hitachi Data Systems Customer Support

    Device Manager - Storage Navigator. The Hitachi Data Systems customer support staff is available 24 hours a day, seven days a week. If you need technical support, log on to the Hitachi Data Systems Support Portal for contact information: https:// hdssupport.hds.com...
  • Page 238 9-18 Troubleshooting Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 239: A Correspondence Between Gui Operations And Cli Commands

    GUI (for example, forcibly deleting a pair) or only the CLI (for example, disaster recovery procedures). □ Correspondence between GUI operations and CCI commands Correspondence between GUI operations and CLI commands Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...

  • Page 240: Correspondence Between Gui Operations And Cci Commands

    Option Create GAD Fence Level paircreate -f never Pairs Copy Pace paircreate -c <size> No initial copy paircreate -nocopy Suspend Pairs P-VOL pairsplit specification Correspondence between GUI operations and CLI commands Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 241 View quorum disks raidcom get ldev Check the Existence of a raidcom get ldev status of virtual LDEV volumes Existence of raidcom get ldev Correspondence between GUI operations and CLI commands Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 242 <mpth> Options <rto> <rtt> Add Remote Paths raidcom add rcu_path Remove Remote Paths raidcom delete rcu_path Remove Remote Connections raidcom delete rcu Correspondence between GUI operations and CLI commands Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 243 Communication Time Out virtual storage machine discontinue host path failure global-active device 5-23 global-active device 5-22 failures In Progress global-active device 5-22 Initialization Failed Fibre-Channel Invalid Port global-active device adding redundancy 5-14 Index-1 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 244 Serial Number Mismatch setup window global-active device 9-16 SIM reports 9-16 system option modes technical support 9-17 unallocating global-active device 5-19 Index-2 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 245 Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide...
  • Page 246 Hitachi Data Systems Corporate Headquarters 2845 Lafayette Street Santa Clara, California 95050-2639 U.S.A. www.hds.com Regional Contact Information Americas +1 408 970 1000 info@hds.com Europe, Middle East, and Africa +44 (0)1753 618000 info.emea@hds.com Asia Pacific +852 3189 7900 hds.marketing.apac@hds.com MK-92RD8072-01...

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