HP Surestore E Disk Array XP256 HP XP P9000 External Storage Access Manager Us - Page 44

Quorum disk ID deletion, Deleting quorum disk IDs (standard method)

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NOTE: During the procedure, you must delete the external volume mapping of the quorum disk. If the ESAM pair is still connected to the disk, you cannot delete the mapping. To ensure you can delete the mapping, before you delete the mapping, make sure you disconnect the quorum disk by running the Disconnect External Volumes command. 1. Using multipath software, vary the non-owner path to offline. 2. Release all ESAM pairs from the primary storage system. 3. From the primary and secondary storage systems, verify that the pair status for all volumes is SMPL. If the status does not change to SMPL due to a failure of the remote copy connections, release all ESAM pairs from the secondary storage system. 4. From the primary and secondary storage systems, delete all quorum disk IDs. The quorum disk becomes a normal external volume. 5. From the primary and secondary storage systems, disconnect the quorum disk by doing the following: 1. Open the External Storages window. 2. Select the quorum disk and specify the Disconnect External Volumes command. 6. From the primary and secondary storage systems, delete the external volume mapping of the quorum disk. In the External Storages window, select the quorum disk and specify the Delete External Volumes command. 7. Remove the cables between the host and secondary storage system, between the primary and secondary storage systems and the quorum disk. To cause the host to recognize P9500 S-VOLs as non-pair volumes, and P-VOLs and S-VOLs as non-pair volumes, when the MCU is P9500 and the RCU XP24000, see "Verifying host recognition of a new pair " (page 35). Quorum disk ID deletion You delete a quorum disk ID during some normal maintenance activities and failure recovery. When you delete a disk ID, the system lists the quorum disk as an external volume and not as a pair. Two procedures can delete a quorum disk ID. One is a standard deletion, and the second is a forced deletion. You use the forced deletion when access to the disk is blocked due to a failure in the disk or the path. • "Deleting quorum disk IDs (standard method)" (page 44) • "Deleting quorum disk IDs by system attribute (forced deletion)" (page 45) Deleting quorum disk IDs (standard method) You delete a quorum disk ID using the standard method if you are able to access the disk (access may be blocked if there is a disk failure or a path failure). 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. Access an MCU or RCU in RWC and click Actions > Remote Copy > Continuous Access Synchronous > Quorum Disk Operation. 2. On the Quorum Disk Operation window, make sure that you are in the modify mode. 44 System maintenance

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NOTE:
During the procedure, you must delete the external volume mapping of the quorum disk.
If the ESAM pair is still connected to the disk, you cannot delete the mapping. To ensure you can
delete the mapping, before you delete the mapping, make sure you disconnect the quorum disk
by running the
Disconnect External Volumes
command.
1.
Using multipath software, vary the non-owner path to offline.
2.
Release all ESAM pairs from the primary storage system.
3.
From the primary and secondary storage systems, verify that the pair status for all volumes is
SMPL.
If the status does not change to SMPL due to a failure of the remote copy connections, release
all ESAM pairs from the secondary storage system.
4.
From the primary and secondary storage systems, delete all quorum disk IDs. The quorum disk
becomes a normal external volume.
5.
From the primary and secondary storage systems, disconnect the quorum disk by doing the
following:
1.
Open the
External Storages
window.
2.
Select the quorum disk and specify the
Disconnect External Volumes
command.
6.
From the primary and secondary storage systems, delete the external volume mapping of the
quorum disk. In the
External Storages
window, select the quorum disk and specify the
Delete
External Volumes
command.
7.
Remove the cables between the host and secondary storage system, between the primary and
secondary storage systems and the quorum disk.
To cause the host to recognize P9500 S-VOLs as non-pair volumes, and P-VOLs and S-VOLs as
non-pair volumes, when the MCU is P9500 and the RCU XP24000, see
“Verifying host recognition
of a new pair ” (page 35)
.
Quorum disk ID deletion
You delete a quorum disk ID during some normal maintenance activities and failure recovery.
When you delete a disk ID, the system lists the quorum disk as an external volume and not as a
pair.
Two procedures can delete a quorum disk ID. One is a standard deletion, and the second is a
forced deletion. You use the forced deletion when access to the disk is blocked due to a failure in
the disk or the path.
•
“Deleting quorum disk IDs (standard method)” (page 44)
•
“Deleting quorum disk IDs by system attribute (forced deletion)” (page 45)
Deleting quorum disk IDs (standard method)
You delete a quorum disk ID using the standard method if you are able to access the disk (access
may be blocked if there is a disk failure or a path failure).
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.
Access an MCU or RCU in RWC and click
Actions > Remote Copy > Continuous Access
Synchronous > Quorum Disk Operation
.
2.
On the
Quorum Disk Operation
window, make sure that you are in the modify mode.
44
System maintenance