Splitting Pairs Using Pprc Commands; Csuspend - HP StorageWorks XP24000 User Manual

Figure 41 PPRCOPY ESTPAIR Command
//EPAIR
//
//SYSPRINT
//DD1
//SYSIN
PPRCOPY ESTPAIR DDNAME(DD1) PRI(X'0080',30158,X'00') SEC(X'0080',30158,X'01')
MODE(COPY) PACE(15)
/*
//

Splitting Pairs Using PPRC Commands

The CSUSPEND and PPRCOPY SUSPEND commands are equivalent to the ShadowImage for
Mainframe split pair operation. The CSUSPEND and the PPRCOPY SUSPEND commands must be
issued to the S-VOL, and the pair status must be duplex.
This section describes the parameters and examples of the CSUSPEND and the PPRCOPY SUSPEND
command.

CSUSPEND

Table 39 (page 98)
when you split SIz pairs.
Table 39 CSUSPEND Command Parameters
Parameter
DEVN
PRIM
SEC
PRIMARY
2
QUIESCE
1 The CU number or the parameter is valid only for the DKC emulation type 2105 or 2107.
2 The parameter is valid only for the DKC emulation type 3390. If the DKC emulation type is 2105 or 2107, the TSO
command ignores the parameter and the ICKDSF job ends abnormally (CC = 12).
3 The CSUSPEND QUIESCE option has been disabled by APAR OW15247 or APAR OW15248. See either of these
APARs and the latest IBM PPRC documentation for detailed information on the QUIESCE option. Check with your HP
account team before using the QUIESCE option with the HP XP storage system. If the QUIESCE option is issued to
certain volumes (for example, active SPOOL, PAGE, or CATALOG datasets, active SYSRES volume), the attached hosts
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 quiescent and subsequent write
requests to the S-VOL will be suspended by the host until the QUIESCE condition is released.
You can use QUIESCE parameter to the SIz pairs only when the pair status is duplex. If an SIz
S-VOL has more than one T-VOL, the QUIESCE parameter is effective if at least one pair is specified.
98 Performing ShadowImage for Mainframe Pair Operations Using PPRC
JOB
EXEC PGM=ICKDSF
DD SYSOUT=*
DD UNIT=SYSDA,DISP=SHR,VOL=SER=DKDE80
DD *
lists and describes the CSUSPEND command parameters that can be used
Device number.
Primary volume (S-VOL): SSID, serial number,
channel connection address, and CU number.
You can set MPS00 or MAnn0 instead of a
serial number. nn is the CTG ID.
Secondary volume (T-VOL): SSID, serial
number, channel connection address, and CU
1
number.
Not applicable.
3
See .
Value
1
Description
The parameter MPS00 is for a steady split
request.
The parameter MAnn0 is for a quick split
request on all pairs in a CTG.
If you set a parameter other than the serial
number, MPS00 or MAnn0, the command will
be rejected.
SIz does not use this parameter. SIz ignores it.
3
See , however, see the IBM document for
important information.