Hitachi ShadowImage for IBM z/OS User"s Guide (T5213-96002, June 2007)

Performing ShadowImage for z/OS Pair Operations Using PPRC 7-9
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
Splitting Pairs Using PPRC Commands
The CSUSPEND and PPRCOPY SUSPEND commands are equivalent to the
ShadowImage for z/OS split pair operation. The CSUSPEND and 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 7-6 lists and describes the CSUSPEND command parameters that can be
used when you split SIz pairs.
Table 7-6 CSUSPEND Command Parameters
Parameter Value Description
DEVN Device number.
PRIM Primary volume (S-VOL): SSID, serial number,
channel connection address, and CU number
*1
.
You can set an additional parameter MPS00 instead
of a serial number.
The parameter MPS00 is for a steady split request. If
you set other than the serial number or the parameter
MPS00, the command will be rejected.
SEC Secondary volume (T-VOL): SSID, serial
number, channel connection address, and CU
number
*1
.
PRIMARY Not applicable. SIz does not use this parameter. Siz ignores it.
QUIESCE
*2
See *Note 3.
See *Note 3, however, please refer to the IBM
document for important information..
*Note 1: CU number or the parameter is valid only for the DKC emulation
type 2105 or 2107.
*Note 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).
*Note 3: The CSUSPEND QUIESCE option has been disabled by APAR
OW15247 or APAR OW15248. Refer to either of these APARs and the latest
IBM PPRC documentation for detailed information on the QUIESCE option.
Please check with your Hitachi account team before using the QUIESCE option
with the USP V storage system. If the QUIESCE option is issued to certain
volumes (e.g., active SPOOL, PAGE, or CATALOG datasets, 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 quiesced and subsequent write requests to the S-VOL will be suspended
by the host until the QUIESCE condition is released.