HP 9000 Virtual Library System - Manual (Page 127)

3. Select the RAID Mode.
•
Default – No Hot-spare: the system uses a 10+2 configuration where ten disks are part
of the available virtual disks and two are parity disks.
•
Hot-spare: the system uses a 9+2+1 configuration where nine disks are part of the
available virtual disks, two are parity disks, and one is a hot-spare disk.
NOTE: Using the hot-spare mode reduces the VLS capacity and performance by 10%.
4. Click Submit.
The screen displays a warning.
5. Click Submit.
The screen displays a confirmation that the mode was changed.
For all existing arrays, the change is made only when you use the Rebuild All Storage Pools
operation; see
“Rebuilding all Storage Pools” (page 47) . After the global change is made,
any new disk array enclosures added to the configuration will use the selected mode. If you
change the mode and do not rebuild all the storage pools, the system will continue to use the
mode selected before your change.
Setting the Disk Beaconing
Disk beaconing allows you to turn on the identification LED for any disk on a disk array enclosure.
You can also turn on LEDs by enclosures or arrays. This can help identify a specific disk that needs
to be replaced.
To access the disk beaconing screens, from Command View VLS:
1.
Select the System tab.
2. In the navigation tree, expand Chassis.
3. In the navigation tree, select Disk Arrays.
4. In the task bar, select Disk Beaconing.
The screen opens to the Summary of all Disks in the VLS screen and displays details about the
virtual disks including the total number of disks, number of disks in an error state, and the
number of disks with beaconing set to On.
5. Drill down from Disk Beaconing in the navigation tree to view the disk arrays, enclosures within
an array, or disks within an enclosure.
6. Select the array, enclosure, or disks you want to change. (The default is disk beaconing off.)
7. Click ON (or OFF) to change the status of the disk beaconing.
The screen lists the disks that have changed.
Managing Cartridges
You can change the following parameters for existing cartridges from the Cartridge Parameters
window:
•
Library with which they are associated
•
Capacity
•
Write access
Accessing the Cartridge Parameters Window
To access the Cartridge Paramenters window, from Command View VLS:
1.
Click the System tab.
Managing Cartridges 127