HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0109, July 2009)

Deleting back-end LUs
Follow the Deleting or reusing capacity procedure above to first identify all affected virtual disks.
Retiring an array
Before removing an array or removing capacity, you may want to migrate the data. If you choose to
migrate the data off the array, you need to mount the backup copy (source copy) of the data to a
server for formatting or overwriting, such that the old array does not contain residual data from before
the migration. The formatting does not need to be performed by the same operating system that
maintained the data, because the purpose of the overwrite is to prevent data scavenging.
Make sure that all SVSP used capacity has been released by SVSP before detaching the array from
the SAN.
To retire or replace an array:
1. Using the VSM GUI, find all back-end LUs and stripe sets in the VSM that are presented to the
domain by the array to be removed.
2. For each identified pool, use the VSM GUI to find each virtual disk that uses that pool, and stop
any PiTs or snapshots associated with the virtual disks.
3. Stop all applications using the virtual disks to be deleted.
4. Unpresent all virtual disks from the servers, preferably by first stopping the I/O.
5. Delete the virtual disks.
6. Reselect the pool, and use the virtual disk tab to verify that no virtual disks are using the pool.
7. Delete the pool.
8. Delete any stripe sets used to create any part of the pool.
9. Remove all DPM-to-array and VSM server-to-array zone sets.
10. Turn off power to the array and detach it from the SAN.
Deleting hosts
1. Stop applications from using virtual disks presented to the server by the domain.
2. Identify all virtual disks presented to the host. There is a tab in the VSM GUI that shows all
presented virtual disks. See the “Working with hosts” chapter of the HP StorageWorks SAN
Virtualization Services Platform Manager user guide.
3. Stop all remote and local replication (mirroring) tasks that involve any of the selected virtual disks.
See the “Using mirroring” chapter of the HP StorageWorks SAN Virtualization Services Platform
Manager user guide.
4. For each virtual disk identified in step 2, delete all PiTs and snapshots. See the “Using snapshots”
chapter of the HP StorageWorks SAN Virtualization Services Platform Manager user guide.
5. Overwrite or reformat the entire volume.
6. Dismount from the server and unpresent from the domain. See the “Working with virtual disks”
chapter of the HP StorageWorks SAN Virtualization Services Platform Manager user guide.
7. Delete the virtual disk. See the “Working with virtual disks” chapter of the HP StorageWorks
SAN Virtualization Services Platform Manager user guide.
Removing devices from the domain66