9 Performing Offline Data Migration
Prerequisite Component Installation
1.Check the HP SPOCK website to confirm proper configuration. See “Configuration Rules for HP 3PAR Online Import for EMC Storage Support” (page 15).
2.Install EMC
3.Install HP 3PAR Online Import Utility for EMC Storage. See “Installing the HP 3PAR Online Import Utility for EMC Storage” (page 17).
4.Ensure that the source EMC Storage system is correctly zoned to the destination HP 3PAR StoreServ Storage system. See “Zoning the Source EMC Storage to the Destination HP 3PAR StoreServ Storage System” (page 33).
Preparing Host for Migration
To prepare for a successful migration, stop all applications on the host that may be accessing the LUNs to be migrated. This also includes any replication and backup applications on the LUNs. Next, set the LUNs to be migrated to an offline/unmounted state.
NOTE: Any applications and services that may automatically start with a reboot should be disabled until after the migration has started and the documentation instructs you to bring your host back online.
Preparing Windows Clusters for Migration
When Windows clusters are migrated, the cluster must first be disabled so that any SCSI reservations in use are released. For Windows 2008 R2 cluster, this can be achieved by stopping all applications running on the cluster, then stopping the cluster service on ALL nodes (For more information, see Microsoft documentation on how to start/stop the cluster services).
When a Windows Server 2012 cluster is migrated, maintenance mode must be set on the cluster disks to clear SCSI reservations on the disks. Because the quorum disk cannot be set in the maintenance mode, it must be set to the offline mode to clear its SCSI reservations. Then, the cluster service must be stopped on all nodes.
Zoning the Host to the Destination HP 3PAR StoreServ Storage System
Zone the host to the destination HP 3PAR StoreServ Storage system to establish communication. Using the HP 3PAR Management Console, verify
Shutting Down the Host
Shut down the host to continue offline migration.
Removing the Host from the Storage Group
Using the EMC Unisphere tool, remove the host(s) from the storage group containing LUNs to be migrated.
Identifying the Source and Destination Storage Systems
This section provides information about identifying and adding the source storage system for migration. There are prerequisites and information needed before beginning.
66 Performing Offline Data Migration