Page 1 Gateway 840 VT-100 User's Guide Getting Help Installing...
Page 2: Table Of Contents
Contents 1 Introduction ............1 Features .
Page 3 5 SAN LUN Mapping ..........89 Overview .
Page 4 9 Event Logs ........... . . 173 Accessing event logs .
Page 6: Introduction
This guide provides the operational and reference information to configure and manage the RAID controllers installed in your Gateway 840 Series storage system. The controllers are accessed through a VT-100 terminal using a menu-based user interface, connected directly to the RAID controllers.
Page 7: Features
Chapter 1: Introduction Features Your Gateway 840 has a menu-based software utility designed to configure and manage the RAID controller in your new storage enclosure. It provides centralized management to control primary storage assets vital to ensuring maximum data reliability, network up-time, and system serviceability. It lets you manage the storage system by accessing the configuration utility locally.
Page 8: Troubleshooting Assistance
“Event Logs” on page 173 or help section to determine the possible cause or causes and the suggested action to take. Also see “Diagnostics” on page 199. www.gateway.com...
Page 9 Chapter 1: Introduction www.gateway.com...
Page 10: Accessing The Configuration Utility
Accessing the Configuration Utility This chapter provides information on accessing the configuration utility. Read this chapter to learn how to: ■ Access the utility ■ Use the VT-100 terminal ■ Navigate the configuration utility ■ View controller information...
Page 11: Accessing The Utility
“Using the VT-100 terminal” on page Important You can also choose to use StorView Storage Management software to manage and monitor the enclosure and SATA RAID Controller. Refer to the Gateway 840 SATA RAID StorView User’s Guide for more information. www.gateway.com...
Page 12: Using The Vt-100 Terminal
To access the RAID controllers: Connect the host terminal to the serial port on the controller using a null-modem serial cable (use the configuration information in the preceding tables). Turn on the terminal and the Gateway 840 Series storage system. www.gateway.com...
Page 13 You can now perform all of the functions described in the following chapters. All steps begin from the Main Menu. If an event or error occurs, you can review the log for the problem by examining the event log (see “Event Logs” on page 173). www.gateway.com...
Page 14: Navigating The Sata Raid Configuration Utility
The table below describes the primary navigation and selection methods. Do this Toggle interface from text-base to Press keys. menu-based. Return to the previous menu or Press the key. screen (Exit). Move the selection. Press the arrow keys. Select a menu option. Press the key. NTER www.gateway.com...
Page 15: Menu System
Controller LUN Port ID Settings Controller Port Data Rate RS232 Settings Packetized SCSI/QAS Diagnostic Offline Diagnostics Online Diagnostics Clears All Configurations Reset Controller Shutdown Controller Diagnostics Dump Additional Configuration Modify Configuration Name Modify Configuration WWN Backgroun Verification Log Enclosure Events www.gateway.com...
Page 16 Controller Port Data Rate Port ID Selection Controller Port 1 Hard Address: 05 RS232 Settings Packetized SCSI/QAS Set Controller Port 0 Data Rate Set Controller Port 1 Data Rate RS232 Setting 115200 Packetized SCSI/QAS 57600 38400 Enable/Disable 19200 9600 www.gateway.com...
Page 17 Select Logical Drive View Drive Port Events Clear Access Statistics on Port 0 View Controller Port Events Clear Access Statistics on Port 1 View Environment Events Clear Access Statistics on Both Ports View Failed Drive List Clear Event Log www.gateway.com...
Page 18: Viewing Controller Information
■ Firmware information ■ Run-time information ■ Temperature and voltage information To view controller information: After the controller(s) have completed booting, press C + E, then press + W to switch to the menu-based mode. The Main Menu opens. www.gateway.com...
Page 19 Configuration WWN An 8-byte World Wide Name the controller uses for identification to hosts. This can be identical to the Controller WWN, or can be different. Config Name A 64-byte ASCII name used to identify a specific controller configuration. www.gateway.com...
Page 20 Onboard Temperature This is the current temperature as measured by the controller. If this value exceeds predefined limits, an event will be written into the event log. Controller Voltage Current readings for various controller and coprocessor (if applicable) voltages. www.gateway.com...
Page 21 Chapter 2: Accessing the Configuration Utility www.gateway.com...
Page 22: Creating Disk Arrays
Creating Disk Arrays This chapter provides information on creating disk arrays. Read this chapter to learn how to: ■ Understand arrays ■ Create arrays ■ Configure array read-ahead and writeback cache ■ Assign hot spare drives ■ Delete an array ■...
Page 23: Overview
RAID levels and array options. It may be helpful to refer to the Topology chapter in the Gateway 840 SATA RAID Enclosure User’s Guide. This chapter will step you through the process to create the disk arrays. You will also find sections on deleting arrays, expanding arrays, and assigning hot spare drives.
Page 24: Understanding Arrays
This is the number of data drives multiplied by the chunk size. Cache Flush Array This is the array that is used to automatically flush cache data in the situation where power has failed to some of the drives. www.gateway.com...
Page 25 RAID 5 offers better overall performance in server applications. Random I/O benefits more from RAID 5 than does sequential I/O, and writes take a performance hit because of the parity calculations. RAID 5 is ideal for database applications. www.gateway.com...
Page 26: Optimization And Drive Selection For Raid 5 Arrays
You should review the information provided in “Optimizing RAID 5 Write Performance” on page 227. Additional information is provided at the appropriate step during configuration. www.gateway.com...
Page 27: Creating Arrays
No changes are made until the configuration is saved, so it is possible to quit at any time without affecting the current configuration as long as you do not save those changes. Configuration can be performed while the system is active. www.gateway.com...
Page 28 Creating arrays To view an array: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 29 Ser. No. Drive serial number. Cap. Drive capacity expressed in GBs. EN, SL The enclosure and drive slot number, used for drive identification. The drive status, will either be “OK” or “FL.” Press E to return to the previous screen. www.gateway.com...
Page 30 Creating arrays To create an array: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 31 Chapter 3: Creating Disk Arrays To access the Array Configuration Menu, select then Array Configuration, press E . The Array Configuration Menu opens. NTER The Array Configuration Menu lets you review, create, delete, or otherwise modify the active arrays. www.gateway.com...
Page 32 Creating arrays From the Array Configuration Menu, select , then press E Create Array NTER The Array Name screen opens. www.gateway.com...
Page 33 Chapter 3: Creating Disk Arrays Type a name for the array (using as many as 32 characters), then press . The RAID Level screen opens. NTER Highlight the appropriate RAID level, then press E . The Configuration NTER Type screen opens. www.gateway.com...
Page 34 16 commands to perform a full stripe write (actually 17 because of alignment). If you were to use a larger stripe size, you run the risk of not being able to cluster sufficiently for the application. www.gateway.com...
Page 35 256 K is better to minimize the number of commands that cross chunk. Larger chunk sizes should be used if the OS is writing large blocks, or with large sequential writes where the controller can cluster sufficiently. Always keep the stripe size below 2 MB. www.gateway.com...
Page 36 If you have multiple enclosures, the enclosure you are viewing is displayed at the top of the page. To move to the drives in the next enclosure, highlight the last drive in the column or row and press the right or down arrow key. www.gateway.com...
Page 37 The Drive Capacity Reserve screen opens. Tips & Tricks The drive capacity reserve determines how much drive capacity to retain for future capacity fluctuations of replacement drives. (This is not applicable to RAID 0 configurations.) The default is 1%. www.gateway.com...
Page 38 Tips & Tricks If this is just one single array with less than five hard drives, choose the default of one sub-array. www.gateway.com...
Page 39 Select the number of sub-arrays required, then press E . The NTER Initialize/Trust Arrays screen opens. Select , then press E . The Save Configuration screen opens. Initialize Array NTER For details on trusting arrays, refer to “Trusting an array” on page www.gateway.com...
Page 40 After you have completed these tasks, go to the next chapter. Create the logical drives and perform the LUN assignment to complete the setup. Additionally, for more control over the logical drives, see “SAN LUN Mapping” on page 89 and perform your appropriate mappings. www.gateway.com...
Page 41: Configuring Array Read-Ahead And Writeback Cache
When the host request the next 64 KB block, the data will already be in the cache. Depending on the data patterns for your application, disabling the read-ahead cache can help load balance the read and write operations, which can increase performance. www.gateway.com...
Page 42 Configuring array read-ahead and writeback cache To configure the read-ahead cache: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 43 Chapter 3: Creating Disk Arrays From the Configuration Menu, select , then press Array Configuration ENTER The Array Configuration Menu opens. From the Array Configuration Menu, select , then Array Cache Configuration press E . The Array Cache Configuration Menu opens. NTER www.gateway.com...
Page 44 Press the up or down arrow keys to select an array, then press E NTER Press the up and down arrow keys to select a Read-Ahead Cache parameter to use for the selected array, then press C + D to save the changes. www.gateway.com...
Page 45: Writeback Cache
Below is a table from the Gateway 840 Series User Guide, which list the hold-up times for data for the battery backup unit.
Page 46 The strategy of write operations results in a completion signal being sent to the host operating system as soon as the cache receives the data to be written. The hard drives will receive the data at a more appropriate time in order to increase controller performance. www.gateway.com...
Page 47 Chapter 3: Creating Disk Arrays To configure the writeback cache: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 48 Configuring array read-ahead and writeback cache From the Configuration Menu, select , then press E Array Configuration NTER The Array Configuration Menu opens. From the Array Configuration menu, select Array Cache Configuration Menu then press E . The Array Cache Configuration Menu opens. NTER www.gateway.com...
Page 49 Chapter 3: Creating Disk Arrays From the Array Cache Configuration Menu, select , then Writeback Cache press . The Writeback Parameters Select Array menu opens. ENTER www.gateway.com...
Page 50 Disable if a controller battery fails, or Disable if the array is in a critical state, (for example, during a rebuild). Enable the options for your application. For maximum data protection, we recommend that you enable all three options. www.gateway.com...
Page 51 Chapter 3: Creating Disk Arrays Press C + D to save the changes. The Save Configuration screen opens. Select to save the configuration changes, then press E NTER Press any key to continue. www.gateway.com...
Page 52: Assigning Hot Spare Drives
This step is accomplished through the Hot Spare Configuration menu. To configure hot spare drives: From the Main Menu, select , then press . The Configuration Menu ENTER Configuration Menu opens. www.gateway.com...
Page 53 . The Hot Spare Configuration NTER Menu opens. To add or remove a hot spare drive, select Add or Remove Pool and Dedicated , then press E . The Add or Remove Global and Dedicated Spares Spare NTER screen opens. www.gateway.com...
Page 54 After you make your selection, press C + D to continue. When you are prompted to save the changes, press Y to save the new hot spare configurations. Press any key to continue, then go to the next chapter, “Logical Drives” on page www.gateway.com...
Page 55: Deleting An Array
Chapter 3: Creating Disk Arrays Deleting an array To delete an array: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 56 Deleting an array From the Configuration Menu, select then press Array Configuration Menu, . The Array Configuration Menu opens. NTER From the Array Configuration Menu, select then press E Delete Array, NTER The Delete Array screen opens. www.gateway.com...
Page 57 Chapter 3: Creating Disk Arrays Press the up and down arrow keys to select the array to delete, then press NTER To complete the deletion, select , then press E NTER Press any key to continue. www.gateway.com...
Page 58: Expanding An Array
To add more drives to your existing arrays, refer to “Adding additional drives” on page To add more sub-arrays to your existing array, refer to “Adding additional sub-arrays” on page www.gateway.com...
Page 59: Adding Additional Drives
Chapter 3: Creating Disk Arrays Adding additional drives To add additional drives: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 60 Expanding an array From the Configuration Menu, select , then press Array Configuration Menu . The Array Configuration Menu opens. NTER From the Array Configuration Menu, select , then press E Expand Array NTER The Select Array to Expand Menu opens. www.gateway.com...
Page 61 Press the up and down arrow keys to select an array to expand, then press . The Expansion menu opens. NTER From the Expansion menu, select , then Add a Number of Drives to the Array press E . The Expand Array Drive Selection screen opens. NTER www.gateway.com...
Page 62: Adding Additional Sub-Arrays
When you are prompted to save the changes, select , then press E NTER Press any key to continue. Adding additional sub-arrays To add additional sub-arrays: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 63 Chapter 3: Creating Disk Arrays From the Configuration menu, select , then press Array Configuration Menu . The Array Configuration Menu opens. NTER From the Array Configuration Menu, select then press E Expand Array, NTER The Select Array to Expand Menu opens. www.gateway.com...
Page 64 Press the up and down arrow keys to select an array to expand, then press . The Expansion Menu opens. NTER Press the up and down arrow keys to select Add a Number of Sub-Arrays to , then press E . The Expand Array Drive Selection screen the Current Array NTER opens. www.gateway.com...
Page 65 You can cancel your selection by highlighting the drive and pressing R, or remove all selected drives and start again by pressing C. When you are prompted to save the changes, select , then press E NTER Press any key to continue. www.gateway.com...
Page 66: Trusting An Array
To trust an array: When creating a RAID 5/50 array, after you have selected the number of sub-arrays, the Initialize Array/Trust Array menu opens, where you can Initialize or Trust the array. (Test Purposes Only) Select then press E Trust Array, NTER www.gateway.com...
Page 67 Chapter 3: Creating Disk Arrays You are prompted to save the configuration. Select Yes to save the configuration, then press E NTER After the process has completed, press any key to continue. www.gateway.com...
Page 68: Logical Drives
Logical Drives This chapter provides information on creating logical drives. Read this chapter to learn how to: ■ Configure a logical drive ■ Access the LUN configuration menu ■ View unassigned free space ■ Create a logical drive...
Page 69: Overview
Logical drive segmentation is completely transparent to the host systems. Availability To accommodate hosts with multiple ports and multiple host systems, you can restrict a logical drive’s availability to a particular controller port. Access can be enabled or disabled for each port of each controller. www.gateway.com...
Page 70 Unassigned Free The controller keeps a map of all the space that is not Space assigned to any logical drive. This space is available for logical drive creation or expansion. Each unassigned region is individually listed. www.gateway.com...
Page 71: Accessing The Lun Configuration Menu
Chapter 4: Logical Drives Accessing the LUN configuration menu To access the LUN configuration menu: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 72 The LUN Configuration Menu has two menu options: one for managing logical drives, which includes utilities for viewing, creating, deleting, and managing LUNs, and the other is for performing SAN LUN mapping operations. For more information see “SAN LUN Mapping” on page 89 www.gateway.com...
Page 73: Viewing Unassigned Free Space
Normally with a first time configuration this is not necessary, since all of the space is unassigned. To view unassigned free space: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 74 Viewing unassigned free space From the Configuration Menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration Menu, select , then press LUN Management . The LUN Management Menu opens. NTER www.gateway.com...
Page 75 Chapter 4: Logical Drives From the LUN Management Menu, select , then View Unassigned Free Space press E . The Unassigned Free Space screen opens. NTER Review the free space regions and note them for later use. www.gateway.com...
Page 76: Creating A Logical Drive
Creating a logical drive from the available free space regions presents the logical drive to the host operating system. To create a logical drive: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 77 Chapter 4: Logical Drives From the Configuration menu, select , then press E . The LUN Configuration NTER LUN Configuration Menu opens. From the LUN Configuration menu, select , then press E LUN Management NTER The LUN Management Menu opens. www.gateway.com...
Page 78 . The Select Unused Region Menu opens. NTER Press the up and down arrow keys to select a region you want to use for the logical drive, then press E . The Number of Logical Drives to create NTER screen opens. www.gateway.com...
Page 79 1 GB available for use in another logical drive. When you are prompted to save the configuration, select , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 80: Expanding A Logical Drive
Creating a logical drive Expanding a logical drive To expand a LUN: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 81 Chapter 4: Logical Drives From the Configuration menu, select , then press E . The LUN Configuration NTER LUN Configuration Menu opens. From the LUN Configuration Menu, select , then press E LUN Management NTER The LUN Management Menu opens. www.gateway.com...
Page 82 From the LUN Management menu, select , then press Expand Logical Drive . The Select Logical Drive screen opens. NTER Select a logical drive that you want to expand, then press E . The Unused NTER Regions For Expansion screen opens. www.gateway.com...
Page 83 Press the up and down arrow keys to change the value to the desired size, then press E NTER When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 84: Setting Logical Drive Availability
To set logical drive availability: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 85 Chapter 4: Logical Drives From the Configuration menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration menu, select , then press LUN Management . The LUN Management Menu opens. NTER www.gateway.com...
Page 86 Modify the Logical Drive Availability screen opens. From the Modify the Logical Drive Availability screen, select the controller port to modify. Press E to change the property from Enable to Disable. NTER If necessary, repeat the step to change the availability of the other port. www.gateway.com...
Page 87: Deleteing A Logical Drive
Press any key to return to the Main Menu. Deleteing a logical drive This process will remove an existing logical drive. To delete a logical drive: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 88 Creating a logical drive From the Configuration menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration menu, select , then press LUN Management . The LUN Management Menu opens. NTER www.gateway.com...
Page 89 From the Select a Logical Drive to Delete screen, select the logical drive to delete, then press E NTER When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 90: Modifying A Mapped Lun
This option lets you change the assigned LUN number after the logical drive has previously been made available. To modify a LUN number: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 91 Chapter 4: Logical Drives From the Configuration menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration menu, select , then press LUN Management . The LUN Management Menu opens. NTER www.gateway.com...
Page 92 . The Select a Logical Drive to Modify Mapped Number screen NTER opens. From the Select a Logical Drive to Modify Mapped Number screen, select the logical drive whose number you intend to change, then press E NTER The Select a New LUN Number screen opens. www.gateway.com...
Page 93 Press the up and down arrow keys to change the logical drive number to the desired number, then press E NTER When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 94: San Lun Mapping
SAN LUN Mapping This chapter provides information on SAN LUN mapping. Read this chapter to learn how to: ■ Access the SAN LUN mapping configuration menu ■ View SAN LUN mappings ■ Create a SAN LUN mapping ■ Delete a SAN LUN mapping ■...
Page 95: Overview
This is the LUN number that a specific logical drive responds Number to when accessed by a host. It is not necessary for this to bear any relation to the LUN number. Mapping Availability Which controller ports the mapping is valid for. www.gateway.com...
Page 96: Accessing The San Lun Mapping Configuration Menu
Accessing the SAN LUN mapping configuration menu Accessing the SAN LUN mapping configuration menu To access the SAN LUN mapping configuration menu: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 97 , then press E SAN LUN Mapping NTER The SAN LUN Mapping screen opens. The SAN LUN Mapping Configuration Menu provides the options for viewing, creating, deleting, and managing SAN LUNs, and for viewing the host systems attached to the storage network. www.gateway.com...
Page 98: Viewing San Lun Mappings
Viewing SAN LUN mappings Viewing SAN LUN mappings To view existing SAN LUN mappings, choose this option. To view SAN LUN mappings: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 99 Chapter 5: SAN LUN Mapping From the Configuration menu, select , then press E . The LUN Configuration NTER LUN Configuration Menu opens. From the LUN Configuration menu, select , then press E SAN LUN Mapping NTER The SAN LUN Mapping screen opens. www.gateway.com...
Page 100 “P1” respectively. Description: Below each mapping is a plain language description of ■ how the Controller LUN is being presented to the host system as, and what access rights are established for the mapping. These will be Exclusive, Shared, Read-Only. www.gateway.com...
Page 101: Creating A San Lun Mapping
Chapter 5: SAN LUN Mapping Creating a SAN LUN mapping To create a SAN LUN mapping: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 102 Creating a SAN LUN mapping From the Configuration menu, select , then press E . The LUN Configuration NTER LUN Configuration Menu opens. From the LUN Configuration menu, select , then press E SAN LUN Mapping NTER The SAN LUN Mapping screen opens. www.gateway.com...
Page 103 , then press Create SAN LUN Mapping . The SAN LUN Mapping Name screen opens. NTER Type a unique name for this mapping (as many as 32 characters), then press . The SAN LUN Mapping Configuration screen will open. NTER www.gateway.com...
Page 104 Microsoft Windows NT, Microsoft Windows 2000, and Microsoft Windows 2003 do not support a Read Only file system. When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 105: Deleting A San Lun Mapping
Chapter 5: SAN LUN Mapping Deleting a SAN LUN mapping To delete a SAN LUN mapping: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 106 Deleting a SAN LUN mapping From the Configuration Menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration Menu, select , then press SAN LUN Mapping . The SAN LUN Mapping screen opens. NTER www.gateway.com...
Page 107 When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. Access your host operating system and make the necessary adjustments for the change in disk(s). www.gateway.com...
Page 108: Modifying San Lun Mapping
Node and Port names (initiator ID for SCSI HBAs) is installed. To modify a SAN LUN mapping: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 109 Chapter 5: SAN LUN Mapping From the Configuration menu, select , then press E . The LUN Configuration NTER LUN Configuration Menu opens. From the LUN Configuration menu, select , then press E SAN LUN Mapping NTER The SAN LUN Mapping screen opens. www.gateway.com...
Page 110 E . The Modify SAN LUN Mapping screen opens. NTER Press the up and down arrow keys to select a SAN LUN Mapping to be modified, then press E . The Modify SAN LUN Mapping Name screen NTER opens. www.gateway.com...
Page 111 LUN number. Press E to change the mode. If you selected , use the up User Defined NTER or down arrow keys to change the Controller LUN number. Press C + D to move to the next menu. www.gateway.com...
Page 112 Modifying SAN LUN Mapping When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 113: Viewing Connected Hosts
Chapter 5: SAN LUN Mapping Viewing connected hosts Choose this option to view all connected host HBA ports. To view connected hosts: From the Main Menu, select the , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 114 Viewing connected hosts From the Configuration menu, select , then press E LUN Configuration NTER The LUN Configuration Menu opens. From the LUN Configuration menu, select , then press SAN LUN Mapping . The SAN LUN Mapping screen opens. NTER www.gateway.com...
Page 115 Field Description Host number assigned by the controller. This is used when creating a SAN LUN Mapping and selecting a host from the list. SCSI ID This is the SCSI ID of the host bus adapter. www.gateway.com...
Page 116: Advanced Configuration And Management
Advanced Configuration and Management This chapter provides information on advanced configuration and management. Read this chapter to learn how to: ■ Set rebuild parameters ■ Configure hot spares ■ Configure hardware settings ■ View controller information ■ Clear the configuration...
Page 117: Setting Rebuild Parameters
When enabled, auto regeneration will begin the rebuild cycle when a fault tolerant array is configured, a hot spare drive is available, and a drive fault occurs. To enable or disable auto rebuild: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 118 From the Auto Rebuild and Set Priority menu you have the option to enable the automatic rebuild, or set the percent of processor time allocated to a rebuild operation. Press E Auto Rebuild. Then press the up and down Enable Disable NTER arrow keys to change the rebuild priority value. www.gateway.com...
Page 119 Press C + D to save the changes and continue. When you are prompted to confirm the save, choose , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 120: Configuring Auto Hot Spare
This feature only applies when a dedicated or pool spare has not been assigned. To configure an auto hot spare: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 121 From the Configuration Menu, select , then press E . The Rebuild Parameters NTER Rebuild Parameters Menu opens. From the Rebuild Parameters Menu, select the option, then press Auto Hot Spare . The Auto Hot Spare Menu opens. NTER www.gateway.com...
Page 122 Press C + D to save the changes or press E to cancel and return to the previous menu. www.gateway.com...
Page 123: Configuring Hot Spares
Viewing the list of hot spare drives To view a list of hot spare drives: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 124 Configuring hot spares From the Configuration menu, select , then press Hot Spare Configuration . The Hot Spare Configuration menu opens. NTER www.gateway.com...
Page 125 Chapter 6: Advanced Configuration and Management Select then press E . A list of hot spare View Hot Spare Drive Configuration, NTER drives opens. www.gateway.com...
Page 126: Adding Or Removing Hot Spare Drives
Configuring hot spares Adding or removing hot spare drives To add or remove hot spare drives: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 127 From the Configuration menu, select , then press E Hot Spare Configuration NTER The Hot Spare Configuration menu opens. Select then press E . The Add or Add or Remove Global and Dedicated Spare, NTER Remove Global and Dedicated Spares screen opens. www.gateway.com...
Page 128 C to remove all drives in the enclosure that are currently assigned as spares. After the changes have been made, press the C + D to continue. When you are prompted to save the changes, press Y to save the new hot spare configurations. Press any key to continue. www.gateway.com...
Page 129: Configuring The Hardware
. This will allow the controller to use Disabled the next available data LUN but not be displayed to the operating system. If the Controller LUN is required to be at a specific, user-defined LUN, choose the option and select from 0-511. User Defined www.gateway.com...
Page 130 Configuring the hardware To configure the controller LUN: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. From the Configuration Menu, select , then press Hardware Configuration ENTER The Hardware Configuration Menu opens. www.gateway.com...
Page 131 “Conflict” will appear next to the LUN number. Press C + D to save the changes and continue. When you are prompted to confirm the save, choose , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 132: Setting The Controller Port Id
The Port ID settings provide you the option to set the SCSI ID for the controller port. You can use IDs 0-15. To set the ID for controller ports: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 133 From the Configuration Menu, select , then press Hardware Configuration . The Hardware Configuration Menu opens. ENTER From the Hardware Configuration Menu, select , then press Port ID Settings . The Port ID Menu opens. NTER Press to toggle between Disabled Enabled ENTER www.gateway.com...
Page 134 IDs can only be changed when there is a RAID configuration present. Press C + D to save the changes and continue. When you are prompted to confirm the save, choose , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 135: Controller Port Data Rate
This option lets you set the data transfer rate of the controller ports. The settings include 320 MB, 160 MB and 80 MB. To set the controller port data rate: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 136 From the Configuration Menu, select , then press Hardware Configuration . The Hardware Configuration Menu opens. ENTER From the Hardware Configuration Menu, select Controller Port Data Rate then press E . The Control Port Data Rate Menu opens. NTER www.gateway.com...
Page 137 Use the up and down arrow keys to select , or 320MB/sec 160MB/sec 80 MB/sec then press E NTER When you are prompted to confirm the change, choose , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 138: Setting The Rs-232 Configuration
The RS-232 Settings option provides you with the option to set the BAUD rate for the controller’s RS-232 port. To change RS-232 settings: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 139 Chapter 6: Advanced Configuration and Management From the Configuration Menu, select , then press Hardware Configuration . The Hardware Configuration Menu opens. ENTER From the Hardware Configuration Menu, select , then press RS-232 Settings . The Baud Rate Selection Menu opens. NTER www.gateway.com...
Page 140 Press the up and down arrow keys to select a BAUD rate for the controller RS-232 port (the default and recommended setting is 115,200), then press NTER When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 141: Packetized Data Transfers/Qas
320 MB/sec operations. Tips & Tricks The default setting of “Enabled” should be valid for most systems To set the packetized protocol: From the Main Menu, select , then press E . The Configuration Menu NTER Hardware Configuration Menu opens. www.gateway.com...
Page 142 Press the up or down arrow keys to select Enabled Disabled Press C + D to save the changes and continue. When you are prompted to confirm the save, choose , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 143: Viewing Controller Information
Controller, such as: Controller WWN, Configuration WWN and Name, Firmware, run-time data and onboard temperature and voltage information. To view controller information: From the Main Menu, select , then press E . The Controller Information NTER Select Controller Menu opens. www.gateway.com...
Page 144 Use U and D to scroll up and down through the controller information displayed. If you want to capture the information, press P to dump the data to a text file. Press E to return to the previous menu. www.gateway.com...
Page 145: Clearing The Configuration
Chapter 6: Advanced Configuration and Management Clearing the configuration To clear the configuration: From the Main Menu, select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 146 The Clear Configuration Warning opens. Caution There is no further warning, clearing the configuration will erase all data. Press Y to continue and clear all configuration information or N to cancel this operation Press E to return to the Main Menu. www.gateway.com...
Page 147 Chapter 6: Advanced Configuration and Management www.gateway.com...
Page 148: Additional Configuration
Additional Configuration This chapter provides information on additional configuration. Read this chapter to learn how to: ■ Modify configuration names ■ Modify configuration WWNs ■ Set single controller mode ■ Verify background media ■ Include enclosure events in the event logs...
Page 149: Modifying The Configuration Name
Chapter 7: Additional Configuration Modifying the configuration name To modify the configuration name: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 150 From the Configuration menu, select , then press Additional Configuration . The Additional Configuration Menu opens. NTER Press the up and down arrow keys to select , then Modify Configuration Name press E . The Configuration Name screen opens. NTER www.gateway.com...
Page 151 Configuration (as many as 64 ASCII characters), then press E to continue. NTER When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 152: Verifying Background Media
If a media error is detected, the controller can automatically re-write the data, providing that the array is in a fault tolerant mode. To verify background media: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 153 From the Additional Configuration Menu, select , then Background Verification press E . The Background Verification screen opens. NTER Press E to toggle between Background Verification. Enabled Disabled NTER Press C + D to continue and save the changes. www.gateway.com...
Page 154 Verifying background media When you are prompted to save the configuration, select , then press E NTER Press any key to return to the Main Menu. www.gateway.com...
Page 155: Including Enclosure Events In Event Logs
Event logs. Enclosure events are those which pertain to the enclosure components such as cooling fan status, power supply status, and I/O card status. To include enclosure events: From the Main Menu select , then press E . The Configuration Menu NTER Configuration Menu opens. www.gateway.com...
Page 156 From the Additional Configuration Menu, select , then Log Enclosure Events press E . The Enclosure Events screen opens. NTER Press E to toggle between (SES) enclosure events. Enabled Disabled NTER Press C + D to continue and save the changes. www.gateway.com...
Page 157 Chapter 7: Additional Configuration When you are prompted to save the configuration, select , then press NTER Press any key to return to the Main Menu. www.gateway.com...
Page 158: Statistics
Statistics This chapter provides information on statistics. Read this chapter to learn how to: ■ View all statistics ■ View access statistics ■ View readahead statistics ■ View command cluster statistics ■ View miscellaneous statistics ■ View access statistics on each logical drive ■...
Page 159: Overview
Clustering Statistics, and RAID 5/50 Write Statistics. The controller maintains individual access statistics for each LUN and controller port. These can be useful to help balance the load from the host. Identical statistics are maintained for both reads and writes. www.gateway.com...
Page 160: Viewing All Statistics
Viewing all statistics Viewing all statistics To view all statistics: From the Main Menu, select , then press E . The Select Statistics Menu NTER Controller Statistics Menu opens. www.gateway.com...
Page 161 From the Select Controller Statistics Menu, select the controller on which you want to view the statistics, then press E . The Statistics Types screen NTER opens. From the Statistics Types screen, select , then press E View All Statistics NTER The All Statistics screen opens. www.gateway.com...
Page 162: Dumping Data To A Text File
You will notice the cursor jumps to the lower-right-corner of the screen and after completion will return to the upper-left-corner of the screen. Click the list, then select > Transfer Capture Text Stop Access the text file using a text editor. www.gateway.com...
Page 163: Viewing Access Statistics
This is a count of the total number of 512-byte blocks (for all ports and logical drives) that have been read since the controller was first powered on. This value is never reset and indicates the amount of data transferred by the controller from the time it was manufactured. www.gateway.com...
Page 164 This of course will have a negative effect on performance. To overcome these problems, you can, with more sophisticated operating systems, set the access size and alignment to an optimal value. These statistics can help you to tune the operating system. www.gateway.com...
Page 165 Aligning an access on the same value as the access size will improve performance, as it will ensure that there are not multi-chunk accesses for commands that are smaller than a chunk size. www.gateway.com...
Page 166: Viewing Readahead Statistics
This is a measure of the efficiency of the readahead algorithm. A low value means that much of the data that the controller reads in the readahead command is not actually requested by the host. www.gateway.com...
Page 167 These give an indication of the multi threaded nature of the host. www.gateway.com...
Page 168: Viewing Command Cluster Statistics
The View Command Clustering Statistics screen is accessed by going to the Statistics Types menu (see “Viewing all statistics” on page 155), then selecting View Command Clustering Statistics www.gateway.com...
Page 169 Command Cluster Count When the controller clusters a write command, it can cluster a large number of them together. These statistics record the average and maximum number of commands the controller clusters and the percentage for each one of these values. www.gateway.com...
Page 170: Viewing Miscellaneous Statistics
To aid in tuning performance, some additional statistics have been included for development use under the selection. View Miscellaneous Statistics The View Miscellaneous Statistics screen is accessed by going to the Statistics Types menu (see “Viewing all statistics” on page 155), then selecting View Miscellaneous Statistics www.gateway.com...
Page 171: Viewing Access Statistics On Each Logical Drive
Chapter 8: Statistics Viewing access statistics on each logical drive To view access statistics for each logical drive. From the Main Menu, select , then press E . The Select Statistics Menu NTER Controller Statistics Menu opens. www.gateway.com...
Page 172 E . The Statistics Types screen NTER opens. From the Statistics Types screen, select View Access Statistics on Each LUN then press E . The Select LUN for Host LUN Statistics screen opens. NTER www.gateway.com...
Page 173 Chapter 8: Statistics From the Select LUN for Host LUN Statistics screen, select a LUN on which to view statistics, then press E . The Select a Port Access to the Host LUN NTER screen opens. www.gateway.com...
Page 174 Viewing access statistics on each logical drive Select a Controller Port on which to view Statistics (either Port 1, Port 2 or Both Ports), then press E . The View Access Statistics on Each LUN NTER screen opens. www.gateway.com...
Page 175: Clearing Access Statistics On Each Logical Drive (Lun)
Select a Controller Port on which to clear Statistics (either Port 1, Port 2 or Both Ports), then press E NTER Select to clear the statistics. Clearing all statistics To clear statistics: From the Main Menu, select the , then press E . The Select Statistics Menu NTER Controller Statistics Menu opens. www.gateway.com...
Page 176 E . The Statistics Types screen NTER opens. From the Statistics Types screen, select , then press E Clear Statistics NTER The Clear Statistics screen opens. Select to clear all statistics, then press E to continue. NTER www.gateway.com...
Page 177 Chapter 8: Statistics www.gateway.com...
Page 178: Event Logs
Event Logs This chapter provides information on event logs. Read this chapter to learn how to: ■ Access event logs ■ Understand controller events ■ Understand drive events ■ Understand controller drive port (host) events ■ Understand enclosure events ■ Understand failed drives ■...
Page 179: Accessing Event Logs
The time stamp of both controllers is synchronized to make the troubleshooting tasks easier. To access event logs: From the Main Menu, select , then press E . The Select Event Logs Menu NTER Controller Event Log Menu opens. www.gateway.com...
Page 180 Accessing event logs From the Select Controller Event Log Menu, select the controller for which you want to view the events, then press E . The Event Log Types menu NTER opens. www.gateway.com...
Page 181 These options are as follows: Event Log Description View All Events This option lists all events. The number of events is indicated. View New Events This lists all events that have occurred since the event log has last been viewed. www.gateway.com...
Page 182 This lists events such as temperature warnings, voltage level errors, battery errors, etc. View Failed Drive List This is a list of drives that the controller has marked as having failed. These drives have either failed in operation, or been removed. www.gateway.com...
Page 183: Controller Events
This indicates that the Battery failure. Replace battery in onboard cache backup the controller. battery (if present) has failed. Battery OK This indicates that the Battery charging No action onboard cache backup complete. necessary. battery (if present) is fully charged. www.gateway.com...
Page 184 Celsius. flow. Elevated ambient The controller’s internal Check for a failed temperature. temperature is approaching fan, if found the maximum allowable limit. replace cooling fan module. Check the ambient temperature of the environment, decrease the local ambient temperature. www.gateway.com...
Page 185 Controller Powered Off The controller has been Removal of No action powered off or removed. controller or necessary. power. Controller Reset The controller has been User initiated a No action reset either locally or controller reset. necessary. remotely. www.gateway.com...
Page 186 The controller’s event log You have cleared No action has been erased. the event log. necessary. Fatal Watchdog Error The controller watchdog Internal hardware Replace the timer has detected a fatal or firmware failure. controller. Contact hardware or firmware error. Technical Support. www.gateway.com...
Page 187 Recovered SDRAM ECC The controller has detected SDRAM error. If it repeats, Error, Address: xxxxxxxx and corrected a single bit replace the Bit: yy ECC error in the SDRAM. controller. The address and error bit are indicated. www.gateway.com...
Page 188 Voltage: xx.yy V specified voltage has hardware failure. controller. Contact exceeded limits. This is a Technical Support. Enclosure 5V or serious error, and should be 12V problem in the Replace the reported to Technical power supply. defective power Support. supply. www.gateway.com...
Page 189: Drive Events
These events indicate that a Parity check No action Check/Rewrite/Check and RAID 5/50 Parity Check, canceled by the necessary. Rewrite Aborted, yy Errors Rewrite, or Check and user. Rewrite has been stopped. Any errors up to this point are indicated. www.gateway.com...
Page 190 The non-recoverable meaning of each field is as media error, follows: hardware error. SN: Serial Number P: Drive port number OP: SCSI command code SN: SCSI sense key EXT: SCSI extended sense QL: SCSI extended sense key qualifier www.gateway.com...
Page 191 Restore power to follows: error. the daisy-chained SN: Serial Number Removal of cables enclosure(s). connecting the A: Array number enclosures. D: Drive number in array Removal of power to daisy-chained enclosure(s). www.gateway.com...
Page 192 Drive error. Replace the hard SN: xx xx xx xx xx xx A: yy because of a timeout. The drive. D: zz meaning of each field is as follows: SN: Serial Number A: Array number D: Drive number in array www.gateway.com...
Page 193 D: Drive number in array Rebuild Complete A: xx A rebuild has completed on A rebuild has No action D: yy the indicated drive. The completed. necessary. meaning of each field is as follows: A: Array number D: Drive number in array www.gateway.com...
Page 194 (hexadecimal) SATA Device Error: Port SATA link error. Drive or SATA link No action <yyy> error. necessary. A drive w/SN:<xx xx xx xx Drive Removed. Drive has been No action xx xx> has been removed physically necessary. removed. www.gateway.com...
Page 195: Controller Drive Port (Host) Events
Logged in at ID: zzz has logged into the into the controller. necessary. controller. These events will only be listed for hosts that have SAN mappings created. P: Host port number WWN: Host World Wide Name ID: Port ID of the Host www.gateway.com...
Page 196 The meaning of each field is as follows: ID: Host ID LUN: LUN requested P: Host port number OP: SCSI command code SN: SCSI sense key EXT: SCSI extended sense QL: SCSI extended sense key qualifier www.gateway.com...
Page 197: Enclosure Events
Encl. yy Temp. zz < aa >C The controller has detected Temperature No action OK WWN: xx xx xx xx xx xx that the indicated sensors are required. xx xx temperature sensor is within reporting normal limits. temperatures in the enclosure. www.gateway.com...
Page 198 Cooling fan module circuit board to force the fans to high speed. If the environment ambient temperature is high, reduce the ambient temperature. Make sure that the airflow is not blocked or restricted on the enclosure. www.gateway.com...
Page 199 Encl. xx Alarm zz is ON Alarm is on. A condition Press the Alarm WWN: yy yy yy yy yy yy caused the alarm Silence button on to sound. the front panel and isolate the cause of the alarm. www.gateway.com...
Page 200: Failed Drives
Replace the hard drive. Command: xx Sense Key: yy Ext The drive has failed for Replace the hard Sense: zz the specified drive. command, with the indicated SCSI sense key and extended sense key. www.gateway.com...
Page 201: Clearing Event Logs
Chapter 9: Event Logs Clearing event logs To clear event logs: From the Main Menu, select , then press E . The Select Event Logs Menu NTER Controller Event Log Menu opens. www.gateway.com...
Page 202 E . The Event Log Types NTER menu opens. From the Event Log Types menu, select , then press E Clear Event Log NTER The Clear Event Log screen opens. www.gateway.com...
Page 203 Chapter 9: Event Logs From the Clear Event Log screen, select to clear all events on this controller, then press . The event log is cleared. ENTER www.gateway.com...
Page 204: Diagnostics
Diagnostics This chapter provides information on diagnostics. Read this chapter to learn how to: ■ Access diagnostics ■ Use offline diagnostics ■ Use online diagnostics ■ Controller maintenance - downloading firmware ■ Drive maintenance ■ Shutdown the controller ■ Use a diagnostics dump...
Page 205: Accessing Diagnostics
Diagnostics Menu opens. From this menu you can enter offline or online diagnostics, or reset or shutdown the controller(s). From the Diagnostics menu, select the type of diagnostics or controller operation you want to access, then press E NTER www.gateway.com...
Page 206 “Using offline diagnostics” on page 202 Online diagnostics can be performed while there is no activity in progress with the enclosure still connected to the host with no effect on the controller’s operating status. See “Using online diagnostics” on page 205 www.gateway.com...
Page 207: Using Offline Diagnostics
Chapter 10: Diagnostics Using offline diagnostics To view offline diagnostics: Before performing this diagnostic, you must disconnect the host system(s) from the enclosure. From the Main Menu, select , then press E . The Diagnostics Diagnostics Menu NTER menu opens. www.gateway.com...
Page 208 Using offline diagnostics From the Diagnostics menu, select , then press . The Offline Offline Diagnostics Enter Diagnostics menu opens. Press E to continue. The Test Data Pattern screen opens. NTER www.gateway.com...
Page 209 Select the type of test you want performed. The Read or Write Test screen opens. Select the type of test to perform, the Test Duration screen opens. Type the test duration, in minutes, then press E . The selected test is NTER performed. www.gateway.com...
Page 210: Using Online Diagnostics
Maintenance, Drive Maintenance, RAID 5/50 Parity Check diagnostics, as well as to shutdown the controllers and perform a diagnostics dump to the terminal window. To access online diagnostics: From the Main Menu, select , then press E . The Diagnostics Diagnostics Menu NTER menu opens. www.gateway.com...
Page 211 Chapter 10: Diagnostics From the Diagnostics menu, select , then press E . The Online Diagnostics NTER Online Diagnostics menu opens. From the Online Diagnostics menu, select the online diagnostic test you want to perform. www.gateway.com...
Page 212: Controller Maintenance - Downloading Firmware
. The Download and Program Controller Firmware screen opens. NTER From the Download and Program Controller Firmware screen, press E NTER begin the firmware download and re-program procedure. At the bottom of the screen, a series of “C” characters will be displayed. www.gateway.com...
Page 213 The upload does not overwrite the firmware during the upload process. It writes the new code into RAM until completed, then copies the new firmware code to the EEPROM after verification. www.gateway.com...
Page 214 Cancel After the transfer screen disappears, press E . You are returned to the Main NTER Menu. Restart the controller(s). From the Main Menu, select menu, then press E . The Diagnostics Diagnostics NTER menu opens. www.gateway.com...
Page 215 E . Wait while the controller reset NTER takes place. The RAID Controller(s) will restart with the new firmware. Important In duplex mode (dual controllers), the second controller’s firmware is automatically updated during the restart procedure. www.gateway.com...
Page 216: Drive Maintenance
The controller can download firmware to the attached hard drives. Because of the large number of hard drives on the market, it is essential to use only a Gateway approved drive firmware file. Different drive manufacturers have different methods for downloading drive firmware, sometimes requiring vendor-unique utilities to perform the download.
Page 217: Download The Firmware From The Host
To download firmware from the host: From the Main Menu, select , then press E . The Diagnostics Diagnostics Menu NTER menu opens. From the Diagnostics menu, select , then press E . The Online Diagnostics NTER Online Diagnostics menu opens. www.gateway.com...
Page 218 . At the bottom of the screen a series of “C” NTER characters will be displayed. When the Cs appear, select from the list (not shown). The Send Send File Transfer File dialog box opens. Click the button and locate the new firmware file (similar to browse “hitachi_ggn3.bin”). www.gateway.com...
Page 219 You can follow the progress of the download from this screen. Read firmware from a drive to the buffer To read firmware from a drive to a buffer: From the Main Menu, select , then press E . The Diagnostics Menu NTER Diagnostics menu opens. www.gateway.com...
Page 220 The Drive Firmware Menu opens. From the Drive Firmware Menu, select Read Firmware From Drive to Buffer transfer , then press E method NTER Select the appropriate firmware from the choices, then press E . The Drive NTER Firmware menu reopens. www.gateway.com...
Page 221 ID of each drive to determine whether the firmware should be updated, then it updates the drive. Turn the enclosure off, then on after a drive firmware download. This will make sure that the drives use the correct firmware. www.gateway.com...
Page 222: Checking Raid 5/50 Parity
It is also prudent to perform this check periodically. To perform the parity check: From the Main Menu, select , then press E . The Diagnostics Menu NTER Diagnostics menu opens. www.gateway.com...
Page 223 Chapter 10: Diagnostics From the Diagnostics menu, select , then press E . The Online Diagnostics NTER Online Diagnostics menu opens. From the Online Diagnostics menu, select , then press RAID 5/50 Parity Check . The Parity Check Menu opens. NTER www.gateway.com...
Page 224 XOR of the data, and compares it to the parity. Then, if there is a discrepancy, it writes out the new parity. This is the slowest to complete, because it has the overhead of a comparison as well as a rewrite. www.gateway.com...
Page 225: Tracing Commands
It can be used to verify that a host is communicating with the controller, or as a method of debugging a system. All commands that are sent to the controller are displayed on the terminal screen. www.gateway.com...
Page 226 Drive maintenance To monitor commands: From the Main Menu, select , then press E . The Diagnostics Menu NTER Diagnostics menu opens. From the Diagnostics menu, select , then press E . The Online Diagnostics NTER Online Diagnostics menu opens. www.gateway.com...
Page 227 Press E to return to the previous menu. Important The command is on port 1 (T1) from the host with ID 124 (ID:7c) for LUN 0. The command is a SCSI inquiry command (CDB: 12). www.gateway.com...
Page 228: Shutting Down The Controller
This option lets you gracefully shutdown the controller. When this method is used, all cache is written before the controller is shutdown. To shutdown the controllers: From the Main Menu, select , then press E . The Diagnostics Menu NTER Diagnostics menu opens. www.gateway.com...
Page 229 From the Select Controller to Shutdown screen, select a controller you want to shutdown, then press E . The Shutdown Controller screen opens. NTER From the Shutdown Controller screen, select to shutdown the controller and return to the Main Menu. The Controller will shutdown. www.gateway.com...
Page 230: Dumping Diagnostics
To export the data to a file, press C + W to enter Text Mode. Select from the Transfer list, then type a file name and a Capture Text destination (or note the default name and path). Click to continue. Start www.gateway.com...
Page 231 You will notice the cursor jumps to the lower-right-corner of the screen and after completion will return to the upper-left-corner of the screen. Select > from the list. Capture Text Stop Transfer Access the text file using a text editor. www.gateway.com...
Page 232: Optimizing Raid 5 Write Performance
Optimizing RAID 5 Write Performance This chapter provides information on optimizing RAID 5 write performance. Read this chapter to learn how to: ■ Understand optimization parameters ■ Use RAID 5 sub-arrays ■ Promote faster rebuilds...
Page 233: Introduction
Full Stripe Write. Alternatively, if the host sends multiple sequential commands, smaller than a stripe size (typically matching the chunk size), the controller can internally combine these commands to get the same effect. In the above example, if a 256 K chunk size www.gateway.com...
Page 234: Sequential Access
This will have a negative effect on performance. To overcome these problems, you can, with more sophisticated operating systems, set the access size and alignment to an optimal value. www.gateway.com...
Page 235: Using Raid 5 Sub-Arrays
Sub-Array. Suppose an array consisted of two RAID 5 sets. If these are then striped, the resulting array would appear as shown in the second of the following tables. In this case, in order for a Full Stripe Write to be performed, www.gateway.com...
Page 236: Experiencing Multiple Drive Failures
A rebuild operation must read data and calculate parity from all the remaining drives in the array. If multiple sub-arrays are used, this means that it is only necessary to read the data from the remaining drives in the sub-array, not all www.gateway.com...
Page 237: Summary
If there are more than five drives in a sub-array, it is better to use a smaller chunk size, say 64 K or 128 K, as this will lead to more Full Stripe Writes. www.gateway.com...
Page 238: A Technical Support
Technical Support This chapter provides information on troubleshooting. Read this chapter to learn about: ■ Getting Technical Support ■ Notices...
Page 239: Technical Support
Appendix B: Technical Support Gateway offers a wide range of customer service, technical support, and information services. Telephone numbers You can access the following services through your telephone to get answers to your questions: Resource Service description How to reach...
Page 240: Notices
For the latest product updates, consult the Gateway Web site at www.gateway.com. In no event will Gateway be liable for direct, indirect, special, exemplary, incidental, or consequential damages resulting from any defect or omission in this manual, even if advised of the possibility of such damages.
Page 241 Appendix B: www.gateway.com...
Page 242: Index
Index auto hot spare configuring access alignment auto rebuild access size automated troubleshooting system access statistics availability accessing logical drive configuration utility diagnostics event logs background media verification LUN configuration RAID controllers Add or Remove Global and Dedicated cache flush array Spares screen capturing screen dump adding...
Page 243 navigating Controller Selftest Failed configuration WWN Controller Selftest Passed configuring Controller Shutdown array writeback cache Controller Timeout auto hot spare Controller Valid hot spare drives DMA Error readahead cache Encl Temp Critical RS-232 port Encl Temp OK writeback cache Encl Temp Warning connected hosts Event Log Cleared viewing...
Page 244 Delete Array screen Rebuild Restarted deleting Rebuild Started array drives logical drive adding additional SAN LUN mapping assigning hot spare diagnostics failed accessing maintenance dumping minimum number offline selection for RAID 5 arrays online dumping downloading capturing text firmware diagnostics firmware from host Drive Capacity Reserve screen Drive Event...
Page 245 time setting controller free space See also SAN LUN mappings viewing LUN Configuration Menu LUN Management Menu hardware configuration settings Host Event mapped logical drive number CC to Host ID mapped LUN number Detected Power-on/Reset mapping Logged in at ID availability host events name...
Page 246 packetized protocol RAID Level screen parameters RAID levels communications read only access rebuild read/write access parity readahead checking RAID 5/50 command efficiency performance command hit rate optimizing RAID 5 write statistics pool spare (global) readahead cache Port Data Rate configuring port name rebuild parameters removing hot spare drives...
Page 247 SCSI ID Sub-Array Selection screen changing controller port segmentation logical drive telephone numbers Select a Host LUN to Modify Mapped temperature Number screen information Select a Logical Drive to Delete screen onboard Select Array screen terminal Select Chunk Size screen VT-100 select drives terminology...
Page 248 controller information free space hot spare drives miscellaneous statistics SAN LUN mappings statistics unassigned LUN free space voltage controller information VT-100 terminal using write cluster rate writeback cache configuring Writeback Parameters Select Array menu controller...
Page 249 8509736...
Page 250 A MAN NSTOR VT-100 SW GDE R0 1/04...

Gateway 840 VT-100 User Manual

1 Introduction

2 Accessing the Configuration Utility

3 Creating Disk Arrays

4 Logical Drives

5 SAN LUN Mapping

6 Advanced Configuration and Management

7 Additional Configuration

8 Statistics

9 Event Logs

10 Diagnostics

11 Optimizing RAID 5 Write Performance

A Technical Support

Index

Quick Links

Related Manuals for Gateway 840 VT-100

Summary of Contents for Gateway 840 VT-100

Table of Contents