HP StorageWorks XP Remote Web Console Software - Manual (Page 79)

ShadowImage for z/OS user guide 79
Example: PPRCOPY SUSPEND Command
CSUSPEND QUIESCE Parameter
CAUTION: The CSUSPEND QUIESCE option has been disabled by APAR OW15247 or APAR
OW15248. For detailed information on the QUIESCE option, refer to either of these APARs. Check with
your HP account team before using the QUIESCE option with the XP128/XP1024/XP10000/XP12000. If
the QUIESCE option is issued to certain volumes (for example, active SPOOL, PAGE, or CATALOG
datasets, or active SYSRES volume), the attached host(s) may enter a deadlock condition and may require
a storage control IML to correct the condition.
The QUIESCE parameter is used to modify the functionality of the CSUSPEND TSO command. For
example, if the QUIESCE parameter is specified, the pair will be inactive and subsequent write requests to
the S-VOL will be suspended by the host until the QUIESCE condition is released. You can use the
QUIESCE parameter only when the pair status is duplex. If the QUIESCE parameter is not specified,
subsequent write operations will be rejected and write-reserved write requests will be processed. The
following table lists the requirements for using the QUIESCE parameter with SI390 pairs.
If an SI390 S-VOL has more than one T-VOL, the QUIESCE parameter is effective if at least one pair is
specified. Write requests at the S-VOL will start when all QUIESCE conditions are released. The following
conditions cause the XP128/XP1024/XP10000/XP12000 to automatically release the QUIESCE
condition:
• A CSUSPEND TSO command without the QUIESCE parameter is accepted.
• A CDELPAIR TSO command is accepted.
• A Delete, Suspend, or Split Pair command (from the Remote Console PC) is accepted.
• Disk array power-on-reset is executed.
//EPAIR JOB
// EXEC PGM=ICKDSF
//SYSPRINT DD SYSOUT=*
//DD1 DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80
//SYSIN DD *
PPRCOPY SUSPEND DDNAME(DD1) PRI(X’0080’,30158,X’00’) SEC(X’0080’,30158,X’01’)
/*
//
Table 29 QUIESCE parameter requirements for ShadowImage
Pair Status QUIESCE Accepted?
Simplex No
Pending No
Duplex Yes
SP-Pend No
V-Split No
Split No
Resync No
Suspend No