Dell EMC ME4 Series User Manual
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Dell EMC ME4 Series User Manual

Dell EMC ME4 Series User Manual

Storage replication adapter for vsphere
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See also: Owner's Manual
Dell EMC ME4 Series Storage Replication
Adapter for vSphere
User's Guide
Regulatory Model: E09J, E10J, E11J
Regulatory Type: E09J001, E10J001, E11J001

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Summary of Contents for Dell EMC ME4 Series

  • Page 1 Dell EMC ME4 Series Storage Replication Adapter for vSphere User's Guide Regulatory Model: E09J, E10J, E11J Regulatory Type: E09J001, E10J001, E11J001...
  • Page 2 Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

  • Page 3: Table Of Contents

    About VMware Site Recovery Manager..........................4 Planned migration.................................4 Disaster recovery................................4 Protected sites and recovery sites...........................5 SRM requirements................................5 Configuring the ME4 Series storage systems........................ 5 Configure replication..............................5 Install SRM software................................6 Install the SRA software..............................6 Configure SRM...................................6 2 Using SRM for disaster recovery........................8 Volume discovery................................

  • Page 4: Installing And Configuring The Sra

    Installing and configuring the SRA The Dell EMC ME4 Series Storage Replication Adapter (SRA) for vSphere enables full-featured use of the VMware vCenter Site Recovery Manager (SRM) version 6.5 or later. Combining the ME4 Series storage system’s replication functionality with the vCenter SRM, the SRA provides an automated solution for implementing and testing disaster recovery between geographically separated sites.

  • Page 5: Protected Sites And Recovery Sites

    A typical SRM configuration involves two geographically separated sites with TCP/IP connectivity, the protected site and the recovery site. The protected site is the site that is being replicated to the recovery site for disaster recovery. Each site contains a Dell EMC ME4 Series storage system, VMware ESX servers, a Virtual Center (vCenter) server, and an SRM server running the SRM.

  • Page 6: Install Srm Software

    Install the SRA software. Install the SRA software Download and install the Dell EMC ME4 Series SRA software for your version of VMware SRM: Go to https://www.dell.com/support. Locate the SRA software on the ME4 Series series storage system support page.
  • Page 7 • Set storageProvider.hostRescanRepeatCnt to 2 (required). • Set Storage.commandTimeout to 1200 seconds (recommended). Installing and configuring the SRA...

  • Page 8: Using Srm For Disaster Recovery

    In either case, ensure that the volumes to be replicated from the protected site are in a valid state so that the most recent replication at the remote site can be used in production. For instructions on how to configure replication schedules, see the chapter on using replication in the Dell EMC ME4 Series Storage System Administrator’s Guide.

  • Page 9: Test A Recovery Plan

    Test a recovery plan You can automatically create a non-disruptive, isolated testing environment on the recovery site by using replication and connecting virtual machines to your isolated testing network. You can also save test results for viewing and export at any time. Testing a recovery plan exercises nearly every aspect of a recovery plan, though several concessions are made to avoid disruption of ongoing operations.

  • Page 10: Automatic Failover

    Automatic failover SRM automates the execution of recovery plans to ensure accurate and consistent execution. Through the vCenter Server you can gain full visibility and control of the process, including the status of each step, progress indicators, and detailed descriptions of any error that occurs.

  • Page 11: Troubleshooting

    VMware vCenter Server uses the SRA to display a detailed error message each time a recovery step fails. The SRA also creates a log file called sra.log that shows each SRM event and each CLI command that occurs on the ME4 Series storage systems.
  • Page 12 Message Message Suggested action number as necessary. If the problem continues after restarting SRM, recreate the storage system pair configuration in SRM. 1020 Could not find peer volume for local volume {localsn}. Ensure that the specified volume has been set up as part of a replication set.
  • Page 13 Message Message Suggested action number 1105 Failed to run command “{cmd}” on storage system at {system}: Verify the IP address configuration on the storage {err} system and on the host, and check network connectivity. 2001 Volume {volume}({name}) is already unmapped. SRM requested that a volume be prepared for failover, but the volume is already prepared.

  • Page 14: Best Practices

    Best practices Specific guidelines and recommendations for using the SRA and replication software in conjunction with the VMware SRM disaster recovery solution include the following: • Prepare a plan in advance for how you will re-establish replication schedules in the event of a site failover. After performing a reverse- replication operation, you must set up replication schedules in order to ensure periodic replication of data from the new source volumes back to the original source site.

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