Changing Virtual Disk Failover/Failback Setting; Storage System Shutdown And Startup; Shutting Down The Storage System - HP 6100 User Manual

Changing virtual disk failover/failback setting

Changing the failover/failback setting of a virtual disk may impact which controller presents the
disk. Table 27 (page 69)
setting for a virtual disk is changed.
NOTE: If the new setting causes the presentation of the virtual disk to move to a new controller,
any snapshots or snapclones associated with the virtual disk will also be moved.
Table 27 Impact on virtual disk presentation when changing failover/failback setting
New setting
No Preference
Path A Failover
Path B Failover
Path A Failover/Failback
Path B Failover/Failback

Storage system shutdown and startup

The storage system is shut down using HP Command View EVA. The shutdown process performs
the following functions in the indicated order:
1. Flushes cache
2. Removes power from the controllers
3. Disables cache battery power
4. Removes power from the drive enclosures
5. Disconnects the system from HP Command View EVA
NOTE:
The storage system may take a long time to complete the necessary cache flush during controller
shutdown when snapshots are being used. The delay may be particularly long if multiple child
snapshots are used, or if there has been a large amount of write activity to the snapshot source
virtual disk.
Individual EVA storage array components should not be powered off during normal operation.
Before powering off any storage system component, contact your HP-authorized service
representative for assistance.

Shutting down the storage system

To shut the storage system down, perform the following steps:
1. Start HP Command View EVA.
2. Select the appropriate storage system in the Navigation pane.
The Initialized Storage System Properties window for the selected storage system opens.
3. Click Shut down.
The Shutdown Options window opens.
identifies the presentation behavior that results when the failover/failback
Impact on virtual disk presentation
None. The disk maintains its original presentation.
If the disk is currently presented on controller B, it is moved to controller
A. If the disk is on controller A, it remains there.
If the disk is currently presented on controller A, it is moved to controller
B. If the disk is on controller B, it remains there.
If the disk is currently presented on controller B, it is moved to controller
A. If the disk is on controller A, it remains there.
If the disk is currently presented on controller A, it is moved to controller
B. If the disk is on controller B, it remains there.
Storage system shutdown and startup 69