HP XP P9500 Storage - Manual (Page 663)

For details, see the MVS Setting Up a Sysplex.
Performing Operations When a Failure Occurs for a Volume in a Copy Group
When a volume in a copy group suffers a hardware failure, you must remove the cause of the
failure and perform a recovery as soon as possible. Use the methods shown in
Table 124 (page
663) if you still need to perform the operations after a failure occurs, but before a recovery can be
performed.
Table 124 Operation Methods For When a Failure Occurs But Before a Recovery Is Performed
Operation Method Type of Operation No.
Continue operation by specifying the VOLUNIT
parameter and SELECT(COND) parameter. When failure occurs for a volume in a copy
group, to operate a copy pair other than the
one for which failure has occurred 1
Use the DEVN parameter to specify the copy
pairs of the volume for which failure has To operate and monitor the status transition of
the volume for which failure has occurred,
without affecting other copy pairs 2
occurred, and perform operation and status
monitoring on a copy pair basis. To monitor
status transition when there are many volumes
for which failure have occurred, use the
NOINVALIDCHECK
parameter of the YKEWAIT
command.
Until the copy pairs are recovered
(resynchronized), specify the SELECT(COND) To execute the YKDELETE command with the
DEVN
parameter specified to dissolve copy
pairs individually.
3
parameter when executing commands for the
copy group to which the copy pairs belong.
Specify the DEVN parameter for the YKMAKE
command to remake copy pairs on a copy pair To remake copy pairs that have been dissolved
using the YKDELETE command with the DEVN 4
basis. Then, to monitor the status transition for parameter specified (when dissolving copy
pairs individually).
the copy pairs, specify the DEVN parameter for
the YKEWAIT command.
Execute commands with the VOLUNIT
parameter specified, on a volume basis. When executing the YKSUSPND command or
YKRESYNC
command for a copy group with a
5
C/T group ID, to look up the cause of the error
(error code).
Recovering from a Cnt Ac-J Z Failure
This section explains how to recover from a Cnt Ac-J Z failure.
Types of Failures
The types of Cnt Ac-J Z failure are as follows:
•
Failure during a failover
•
PSOFF or severed power
#
•
Others
Lack of copy pairs ◦
◦ Inter-disk controller communication failure/full journal
◦ Internal storage system failure
◦ Line failure
#
PSOFF refers to when a storage system is turned off, whereas severed power refers to when the
supply of electricity to the storage system is cut off, such as during a power outage.
Recovering from a Failure 663