If volumes are not managed through a logical volume manager in the system, it is important to follow
the pre-migration checklists to identify the physical device nodes (/dev/rdsk/c0t1d1) on which
the volume is mounted. After data migration, the physical device node may change. Change the
volume mount such that it now it points to the new physical device (dev/rdsk/c0t2d5).
To discover current active mount points, issue the mount command on the system console.
Some applications, such as the Oracle Cluster File system (OCFS) may directly use the raw devices.
Consult the system administrator. OCFS may discover the migrated devices automatically. Follow the
procedure listed in OCFS manual.
In addition, HP recommends that the destination LUN size is equal to the source LUN size. Expand
the destination LUN after the migration is complete and the migrated volume is remounted.
If you are running Veritas Volume Manager on any of the UNIX operating systems, the destination
LUN size must be greater than the source LUN size.
Checklist examples
This section provides examples of completed data migration checklists. These examples depict a
scenario where a customer is upgrading from an old EMC CX3-20 storage array to a new HP EVA
4400 storage array. Three applications and servers are using the CX3-20 array. Each of these three
servers has a different operating system. The information shown with bold text in these tables represents
changes from the existing configuration.
Step 1. List the source and destination storage array
Table 43 Example: Storage array information
WWPN
2
(Fibre Channel)
Number
of con-
trollers
Array man-
agement soft-
ware
1
Firmware
version
Source/des-
tination
Storage array
50-06-01-60-41-e0-18-94
nl
50-06-01-61-41-e0-18-94
nl
50-06-01-62-41-e0-18-94
nl
50-06-01-63-41-e0-18-94
2Navisphere03.24.040.5.0
06
SourceEMC CX3-20
50-00-1F-E1-50-06-22-A1
nl
50-00-1F-E1-50-06-22-A2
nl
50-00-1F-E1-50-06-22-A2
nl
50-00-1F-E1-50-06-22-A3
nl
50-00-1F-E1-50-06-22-A4
2Command
View
CR0D63xc3 p-
6000
DestinationHP EVA 4400
1
The storage array-specific software that is used in data migration to present the source LUNs to the MPX200, and to create
destination LUNs to be presented to the MPX200 and to the server. The array management software also provides the controller
and WWPN information for the storage array ports.
2
World wide port name of the Fibre Channel array; used in performing zoning in Fibre Channel switch firmware.
Data migration best practices376
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