HP XP Racks - Manual (Page 47)

You can use a single procedure to perform a planned outage on:
•
A quorum disk
•
A primary storage system and the quorum disk connected to it
•
A secondary storage system and the quorum disk connected to it
•
A primary and secondary storage system and the disk connected to them
The procedures for performing planned outages
The following procedures contain all of the steps required to perform a planned outage. Use the
procedure that fits the requirements for the planned outage.
Use one of the following:
•
“Performing planned outages (quorum disk only) ” (page 47) .
•
“Performing planned outages (primary storage system and quorum disk)” (page 48) .
•
“Performing planned outages (secondary storage system and quorum disk)” (page 49) .
•
“Performing planned outages (both storage systems and quorum disk)” (page 50) .
Performing planned outages (quorum disk only)
The procedure you use for a planned outage of a quorum disk depends on whether the primary
or secondary storage system is receiving host I/O updates.
Use one of the following:
•
“Performing outages when the P-VOL is receiving host I/O” .
•
“Performing outages when the S-VOL is receiving host I/O” .
Performing outages when the P-VOL is receiving host I/O
Use this procedure when the P-VOL is receiving host I/O updates. If you also need to power off
and on the primary or secondary storage system connected to the disk, use one of the other
procedures (see
“The procedures for performing planned outages” (page 47) ).
1. Using multipath software, vary the non-owner path offline.
2. On the primary storage system, complete the following:
1. Split the pair.
2. Make sure the P-VOL is PSUS.
3. Run the following command on the quorum disk:
Disconnect External Volumes
3. On the secondary storage system, run the following command on the quorum disk:
Disconnect External Volumes
4. Power off the quorum disk.
5. Power on the quorum disk.
6. On the secondary storage system, run the following command on the quorum disk:
Reconnect External Volumes
7. On the primary storage system, complete the following:
1. Run the following command on the quorum disk:
Reconnect External Volumes
2. Resynchronize the pair.
3. Make sure the P-VOL status is PAIR.
8. Using multipath software, vary the non-owner path online.
The different types of maintenance tasks 47