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D2d nas integration with commvault
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Download this manual See also: Service Maintenance Manual, Configuration Manual
HP D2D NAS
Integration with CommVault Simpana® 9
Abstract
This guide provides step by step instructions on how to configure and optimize CommVault Simpana 9 in order to back up to
HP StorageWorks D2D devices using a CIFS backup target.
HP Part Number: EH985-90934
Published: February 201 1
Edition: 1

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  • Page 1 Abstract This guide provides step by step instructions on how to configure and optimize CommVault Simpana 9 in order to back up to HP StorageWorks D2D devices using a CIFS backup target. HP Part Number: EH985-90934 Published: February 201 1...
  • Page 2 © Copyright 201 1 Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.21 1 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license.

  • Page 3: Table Of Contents

    Recover site production data....................44 Data center to data center with physical tape offload at DR site............44 More Information.......................45 A Terminology....................46 B Open file limits and recommended streams per NAS share for D2D Backup Systems......................47 About this guide..................48 Intended audience........................48 Contents...
  • Page 4 Related documentation......................48 Document conventions and symbols..................48 HP technical support.......................49 HP websites...........................49 Documentation feedback......................49 Index......................51 Contents...

  • Page 5: Introduction

    This implementation guide focuses on the usage model where CommVault deduplication on the media server or Client is disabled and the deduplication is performed entirely on the D2D NAS device using the HP StoreOnce deduplication engine. This approach is known as target-based deduplication.

  • Page 6: Configure The D2D Cifs Server

    CommVault media server is not a member of an AD Domain. AD: In this mode the D2D CIFS server becomes a member of an Active Directory Domain. In order to join an AD domain the user needs to provide credentials of a user who has permission to add computers and users to the AD domain.

  • Page 7: To Join A Domain

    To join a domain Connect to the D2D Web Management Interface, navigate to the NAS — CIFS Server page, click Edit and choose AD from the drop-down menu. Provide the name of the domain that you wish to join, e.g “mydomain.local”...
  • Page 8 DNS Management Tool. (From the command line type dnsmgmt.msc or launch DNS from the Administrative Tools menu). Create a new Host(A) record in the forward lookup zone for the domain to which the D2D Backup System belongs with the hostname and IP address of the D2D Backup System.

  • Page 9: To Create Shares And Grant Access Permission

    To create shares and grant access permission Now that the D2D Backup System is part of a domain and can be managed, it is possible to create shares and grant access permission to them for domain account users or groups.
  • Page 10 Now that the D2D Backup System is a member of the domain its shares can be managed from any computer on the domain by configuring a customized Microsoft Management Console (MMC) with the Shared Folders snap-in. To do this first open a new MMC window by typing mmc at the command prompt or from the Start Search box.
  • Page 11 Click Add > and in the dialog box choose Another computer to be managed and select Shares from the View options. Click Finish and OK to complete the snap-in set up. Configuring AD Authentication Mode...
  • Page 12 Note that the Folder Path field contains an internal path on the D2D Backup System. Save this customized snap-in for future use. Configure the D2D CIFS server...
  • Page 13 NOTE: In some cases, when switching the D2D Backup System from No Authentication or User Authentication mode to AD mode, it may be necessary to log out and back into a Windows client before it is possible to access the D2D shares.

  • Page 14: Discover The Nas Cifs Share In Commvault

    Run CommVault and enter your Domain Administrator user name and password. You must be the Domain Administrator because we have configured AD authentication for the CIFS server and the D2D NAS share is only visible to CommVault when it is administered by Active Directory.
  • Page 15 Enter the Network Share path (you can find this on the D2D NAS Shares tab). We are using AD authentication so there is no need to enter the network share user account details. We do not want to enable CommVault Simpana Deduplication because we shall use the D2D NAS deduplication.
  • Page 16 Accept the default settings for retention and click Next. NOTE: Retain backups values (retention period) can be set here or later, from a configuration pane associated with the backup job. Review the Summary screen and click Finish. Discover the NAS CIFS share in CommVault...
  • Page 18 12 for the HP D2D4312 Backup System. This value is set to ensure that the D2D NAS share does not exceed its maximum open file limit (see Appendix B). This setting is also dependent on the number of data streams set in the Storage Policy.

  • Page 19: Storage Policy

    Storage policy One or more default Storage Policies for the Disk Library have also been created (under the Policies—Storage Policies folder a default Storage Policy has been created for DiskLibrary16 (CommVaultShare1)). The exact number of policies will be different each time – depending on how many libraries have already been configured.
  • Page 20 CommVault terminology) where the user data files will be stored on the Disk Library. The size of these containers can be changed. D2D NAS has a fixed limit of 25000 files, so the larger we make the containers the more data we can hold on the D2D NAS share. Ideally, the bigger the containers the better as it stops us hitting the 25000 file limit and reduces fragmentation in the backup.
  • Page 21 These settings are important because we do not want to exceed the open files limits on the D2D NAS share (see later section). If additional Storage Policies are required use the Storage Policy creation wizard by right clicking Storage Policies in the main left-hand menu tree.

  • Page 22: Backing Up To And Restoring From A D2D Nas Share

    4 Backing up to and restoring from a D2D NAS Share Configure a backup to the D2D NAS share For a simple filesystem backup right click the File System icon in the left-hand navigation section of CommVault Simpana 9.0 and select All Tasks — Create New Backup Set,...
  • Page 23 Backup System State box is checked. (This is one of the default settings. If you do not want to back up system state files, go to the Filters tab and set the System state files to ignore.) Click OK. Configure a backup to the D2D NAS share...

  • Page 24: Perform The First Backup

    Go to the Storage Device — Deduplication tab and uncheck Enable Deduplication because all the deduplication is going to take place on the D2D NAS share. Click OK. NOTE: Alternatively you can use the EZ Operations wizard to set up a backup job as we did to configure the backup target previously.
  • Page 25 Click on the backup job in the File System folder. Double click on the backup job name and select the backup type in this case FULL. Click OK to run the job immediately. Look in the Job Controller Window to monitor progress. Double click on the Job Controller entry for more details on progress.
  • Page 26 The example shows the backup to CommVaultShare1 has been split into 4GB containers (called CHUNKS by CommVault) as we set in our Storage Policy. Also note the CHUNKMAP TRAILER which links the chunks together. Backing up to and restoring from a D2D NAS Share...

  • Page 27: Restore From Hp D2D Nas Share

    Index data is key in the recovery process following a complete disaster to the backup catalog. The index also provides quick access to the data in a browse/restore operation. There are two ways to restore from the HP D2D NAS share: Using the Main screen...
  • Page 28 For our worked example we will use the EZ Operations Wizard. Click Restore. Select the client and click Next. Select the latest backup, or browse to the data at a point in time. and click Next. Backing up to and restoring from a D2D NAS Share...
  • Page 29 Select the data file or directory to be restored by drilling down and then select an individual file or all copies of that file to be restored. Click Restore. Double click on the file to be restored and select the required version. Restore from HP D2D NAS share...
  • Page 30 Click OK to go back to the EZ Wizard, followed by Next to display the Summary screen. Click Finish and watch the job run on Job Controller; double click the job in Job Controller to get more details. Backing up to and restoring from a D2D NAS Share...
  • Page 31 On completion the file is restored to C:\Temp. Restore from HP D2D NAS share...

  • Page 32: Other Considerations

    5 Other considerations Ensuring you do not exceed D2D maximum open file limits The HP D2D NAS share has strict allocations for the number of open files it can have open at any given time (See Appendix B). Should these limits be exceeded a lost connection may occur, causing the backup to fail and there will be an entry in the D2D Event log.

  • Page 33: Gridstore (Alternate Data Path) Setup

    GridStore is a licensable feature in CommVault Simpana 9.0; if licensed, the Round Robin between data paths implementation causes issues with HP D2D NAS and should not be used. The Alternate data path (using another media agent) or preferred data path options however can still be used.

  • Page 34: D2D Housekeeping Configuration

    Robin. D2D housekeeping configuration It is a standard best practice with HP D2D Backup Systems to schedule housekeeping (space reclamation) to occur outside of backup windows to ensure there is no I/O contention on the device and ensure maximum backup performance. To set the Windows when housekeeping should be allowed to run, proceed as follows: From the Web Management interface select Administration —...

  • Page 35: Device Allocation

    Device allocation In order to get the best deduplication ratio from a D2D device type HP recommend that similar data types be directed to the same device (VTL or NAS Share). This approach can tend to go against the CommVault Simpana automated storage management techniques and may require some manual configuration overrides.
  • Page 36 The screen shot below shows how to create a replica Disk Library for use in this type of scenario. In addition mount paths can be configured for data load balancing. Right click on the Libraries tab of Storage Resources, select Properties — Mount Path and check Mount path usage is set to Fill and Spill.
  • Page 37 For HP D2D NAS shares the preferred setting is “Fill and Spill” because we do not want unmanaged jobs switching between multiple D2D NAS shares which may cause the number of open file limits to be exceeded.

  • Page 38: D2D Nas Replication

    On the D2D Web Management Interface go to Replication — NAS Mappings and click Start Replication Wizard. At the Welcome screen click Next. Type in the IP address of another D2D Backup System that you want to act as a target for replication from your source D2D Backup System. D2D NAS replication...
  • Page 39 Click Add Target Appliance. The target is accessed and placed online for the source device. Click Next. No target shares are created so we will create a new target share (from the source D2D Backup System). Enter details and click Create New Target Share.
  • Page 40 “seeding” – this is a one-off process where the current total contents of the source are transferred to the target. Subsequent backups to CommVaultShare1 will result in only unique changed data being replicated to the target D2D Backup System. D2D NAS replication...

  • Page 41: End To End Disaster Recovery Process

    This typical usage model is a large ROBO deployment with the Commserve in a central location. In this scenario, there are two D2D Backup Systems, one located at a ROBO site and one located at the central location. Low Bandwidth Replication is configured between the two D2D Backup Systems to enable data written at the ROBO location (Site A) to be replicated to the Disaster Recovery location (Site B).

  • Page 42: End To End Recovery - Data Center To Data Center

    Site B by selecting the Media Agent path for the replica disk library and restoring over the secondary path link (GbE). As Commserve at Site A did not physically write the data to D2D-B (it was written by the low bandwidth replication process), and there are no entries in the CommCell database for D2D-B, you might think that recovery is not possible.
  • Page 43 Figure 3 Data Center to Data Center recovery To facilitate a full end to end recovery, two CIFS share will be created on the D2D Backup System: BackupShare – To be used as the mount point for the replica disk library CommcellDR –...

  • Page 44: Recover Commserve At Site B

    Administrator can select Media Agent at Site B for the recovery and recover data from D2D-B. The first time a recovery is undertaken, the index information for the backup set must be retrieved from the backup in order to select which files to recover. This index is recovered to the local index cache on the Media Agent at Site B, and is therefore available immediately for subsequent restores.

  • Page 45: More Information

    D2D-A is configured to replicate data stored to it to D2D-B via Low Bandwidth Replication (LBR). In addition, the Media Agent server at Site B is also connected to a Tape Library. Both D2D Backup Systems and Media Agents are configured as a CommVault replica disk library, with the primary path (read/write) through Media Agent connected to D2D-A;...

  • Page 46: A Terminology

    A Terminology Commserve Storage manager : This is the command and control centre of the CommCell. CommCell These are integrated software modules that can be integrated into common console. The system consists of integrated software modules which can be grouped together in a CommCell® configuration.

  • Page 47: B Open File Limits And Recommended Streams Per Nas Share For D2D Backup Systems

    For example, with CommVault the default container size is 2 GB but the user can easily change this to 16 GB or more. The HP D2D NAS target for backup does not deduplicate the first 24 MB of any file for performance reasons. Some backup applications generate control files during backup to NAS that are constantly changing –...

  • Page 48: About This Guide

    System with D2D NAS CIFS shares using CommVault Simpana 9.0. Intended audience This guide is intended for users who install, operate and maintain the HP D2D Backup System. This guide assumes a basic working knowledge of CommVault Simpana 9.0 and that it has been installed correctly by loading the appropriate Media Agents and licences.

  • Page 49: Hp Technical Support

    Table 2 Document conventions (continued) Convention Element Monospace text File and directory names System output Code Commands, their arguments, and argument values Monospace, italic text Code variables Command variables Monospace, bold text Emphasized monospace text WARNING! Indicates that failure to follow directions could result in bodily harm or death. CAUTION: Indicates that failure to follow directions could result in damage to equipment or data.
  • Page 50 To make comments and suggestions about product documentation, please send a message to storagedocs.feedback@hp.com. All submissions become the property of HP.

  • Page 51: Index

    Index access permissions, general tab (storage policy), access rights, gridstore, AD authentication, configuring, audience, help authentication modes, obtaining, host(A) record, housekeeping, backup configure, technical support, running, index cache, chunk size, chunks, CIFS server, join domain, CommVault Simpana configuration setup, description of, library properties, configuration setup, configure...
  • Page 52 user authentication, websites HP , product manuals, writers, Index...

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