HP XP Racks - Manual (Page 45)

3. In the quorum ID list, right-click the quorum disk ID that you want to delete, then click Delete
Quorum Disk ID.
4. Confirm the operation in the Preview list, then click Apply.
If the quorum disk ID cannot be deleted, a failure might have occurred in the quorum disk. Do one
of the following:
•
Recover from the failure, then try to delete the ID again using this procedure.
•
Forcibly delete the quorum disk (see “Deleting quorum disk IDs by system attribute (forced
deletion)” (page 45) ).
Deleting quorum disk IDs by system attribute (forced deletion)
You can forcibly delete a quorum disk ID when access to the disk is blocked due to a failure in
either the disk or path. This is done by turning a system option ON and then forcibly deleting the
disk. This causes the disk to become a normal external volume.
Requirements
To ensure that you delete the disk ID properly, make sure that:
•
The disk is not being used by any ESAM pair. If it is, you cannot delete the ID.
•
You delete the ID on both the primary and secondary storage systems. The procedure is the
same for both systems.
•
The ID you delete on the systems is the same ID.
1. On the primary storage system, release all ESAM pairs using the quorum disk that you want
to delete.
2. Call the HP Support Center and ask them to turn ON the appropriate system option on the
storage system that cannot access the quorum disk.
3. On the primary and secondary storage system, delete the quorum disk ID from the Continuous
Access Synchronous/Quorum Disk Operation window in RWC.
4. On the primary and secondary storage system, make sure that the ID is correctly deleted. If
you deleted the wrong ID, register the ID again.
5. Call the HP Support Center and ask them to turn OFF the system option.
Recovery of accidently deleted quorum disks
If you forcibly deleted a quorum disk by mistake, you can recover the quorum disk. The procedure
you use depends on whether the P-VOL or S-VOL was receiving host I/O when the disk was deleted.
You can use RWC and RAID Manager, or only RAID Manager to complete the recovery procedures.
TIP: Some of the steps can be done using either RWC or RAID Manager. Typically, these steps
can be completed more quickly using RAID Manager.
The procedures are:
•
“Recovering the disk when the P-VOL was receiving host I/O at deletion” (page 45)
•
“Recovering the disk when the S-VOL was receiving host I/O at deletion” (page 46)
Recovering the disk when the P-VOL was receiving host I/O at deletion
Use this procedure to recover a disk that was accidentally deleted when the primary volume was
receiving host I/O at the time of deletion.
1.
Vary the host-to-S-VOL path offline using the multipath software.
2. Release all pairs that use the forcibly-deleted quorum disk.
3. Make sure the quorum disk ID is deleted from both primary and secondary storage systems.
The different types of maintenance tasks 45