Hitachi ShadowImage for z/OS user guide (HIT9503-96004, June 2006)

82 ShadowImage for the XP1024/XP128/XP12000/XP10000

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 XP1024/XP128/XP12000/XP10000. 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 XP1024/XP128/XP12000/XP10000 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