HP 4000.6000.8000 Enterprise Virtual Arrays - Manual (Page 36)

Table 5 Impact on virtual disk presentation when changing failover/failback setting
New setting Impact on virtual disk presentation
No Preference None. The disk maintains its original presentation
Path A Failover 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.
Path B Failover 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.
Path A Failover/Failback 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.
Path B Failover/Failback 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 powerup
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 Vdisk.
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 System options.
The System Options window opens.
4. Click Shut down.
The Shutdown Options window opens.
5. Under System Shutdown click Power Down. If you want to delay the initiation of the shutdown, enter
the number of minutes in the Shutdown delay field.
The controllers complete an orderly shutdown and then power off. The disk enclosures then power
off. Wait for the shutdown to complete.
6. Turn off the power switch on the rear of each HSV controller.
7. Turn off the circuit breakers on both of the EVA rack Power Distribution Units (PDU).
8. If your management server is an SMA and you are not using it to manage other storage arrays, shut
down the SMA. From the SMA user interface, click Settings > Maintenance > Shutdown.
36 Enterprise Virtual Array operation