Dell PowerVault NX1950 - Manual (Page 57)

Migrating an Existing Cluster to Dell|Equallogic PS Series Storage
57
Migrating an Existing Cluster to
Dell|Equallogic PS Series Storage
If you are modifying your existing Dell™ PowerVault™ NX1950 cluster
implementation with the Dell|Equallogic PS Series storage array, you must
migrate data from an e-mail store, relational database, or file share to a new
shared storage device. When moving an existing cluster:
1 Create a back-out plan—The first step in any migration is to have a back-out
plan in place. If your migration fails, you must be able to bring the old
system back online to service your customers or users. Planning and
documenting how you are reverting back to the old system gives you the
best chance of a quick recovery.
2 Perform a full backup of your data on the existing cluster—As with any
mission critical application that has its configuration modified, it is
strongly recommended that you perform a complete backup of all data,
databases, and logs before migrating to a new system or cluster.
3 Copy the existing cluster data from the current storage to volumes in a PS
Series group—When performing the migration, you should have exclusive
access to the data, databases, and logs being moved. This helps in preventing
open file locks. You can move data in several different ways. For example,
you can:
• Drag and drop files using Microsoft
®
Windows Explorer.
• Backup to a tape library and restore to PS Series volumes.
The method you use depends on the application data you are migrating.
Moving a user file share is much simpler than migrating a large relational
database. For more information about data migration, see the
documentation located in the vendor application data repository.
4 Bring the cluster online using the new data locations—After you have
successfully migrated your data, databases, or logs to the PS Series group,
bring the cluster online by specifying the new location for the quorum
resource and service data, as needed. Verify that all cluster groups and
resources come online.
Book.book Page 57 Monday, February 4, 2008 1:26 PM