HP 3PAR Online Import for EMC Storage Data Migration Guide

Pre-Migration Steps
Perform these steps to prepare for migration.
Zoning the Source EMC to the Destination HP 3PAR StoreServ Storage System
The correct zoning must be created between the source EMC Storage system and destination HP
3PAR StoreServ Storage system at every stage of the migration operation. The following zoning
rules apply:
• There must be two unique paths between the source and destination storage systems. To create
two paths, the two controller host ports on the source EMC Storage system must be zoned to
two peer ports on the destination HP 3PAR StoreServ Storage system. The peer ports on the
destination HP 3PAR StoreServ Storage system must be on adjacent nodes: 0/1, 2/3, 4/5,
or 6/7.
• Zone the source and destination systems together and make sure they are visible to each other
before zoning hosts to the destination system.
• Do not unzone the source and destination systems from each other until the data migration is
complete.
To create the zoning:
1. On the destination HP 3PAR StoreServ Storage system, configure two free ports as peer ports
using adjacent node pairs: 0/1, 2/3, 4/5, or 6/7.
a. Set the Port connection type to point.
b. Set the Port connection mode to peer.
2. Create two zones between the source EMC Storage system and destination HP 3PAR StoreServ
Storage system, ensuring that one EMC host port is in the same zone with one 3PAR peer
port.
Each zone should contain only two ports: one from each storage system. Adjacent 3PAR peer
nodes should be zoned to separate EMC controllers in a one-to-one mapping. For example,
zone the peer port on node 0 on the HP 3PAR StoreServ Storage system to controller A on
the EMC, and zone the peer port on node 1 on the HP 3PAR StoreServ Storage system to
controller B on the EMC Storage system.
3. Verify that the EMC Storage system can detect both ports on the HP 3PAR StoreServ Storage
system.
Ensure that the peer port WWNs appear in the discovered port list. Alternately, verify that
the EMC is shown as a connected device on both peer ports of the destination HP 3PAR
StoreServ Storage system.
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 documentation instructs you to bring your host
back online.
Preparing Windows Clusters for Migration
When migrating Windows clusters, the cluster must first be disabled so that any SCSI reservations
in use are released.
For Windows 2008 R2 active/passive cluster, this can be achieved by stopping all applications
running on the cluster, then stopping the cluster service on ALL nodes.
26 Preparing for Data Migration