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

7-6 Performing ShadowImage for z/OS Pair Operations Using PPRC
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
Adding Pairs Using PPRC Commands
The CESTPAIR and PPRCOPY ESTPAIR commands are equivalent to the SIz add
pair operation. The CESTPAIR and PPRCOPY ESTPAIR commands must be
issued to the S-VOL of the pair being created, and the T-VOL must be offline
to the host before these commands are issued.
This section describes the parameters and examples of the CESTPAIR and the
PPRCOPY ESTPAIR command.
CESTPAIR (Adding Pairs)
Table 7-4 lists and describes the CESTPAIR command parameters that can be
used when you create SIz pairs.
Table 7-4 CESTPAIR Command Parameters (Adding Pairs)
Parameter Value Description
DEVN Device number.
PRIM Primary volume (S-VOL): SSID, serial
number, channel connection address, and
CU number
*1
.
You must set MSF00 instead of a serial number
if you want to request the Add and Split
operation. This parameter is valid for
MODE(COPY) or MODE(NOCOPY) only.
If you set a parameter other than the parameters on
the left, the command will be rejected.
SEC Secondary volume (T-VOL): SSID, serial
number, channel connection address, and
CU number
*1
.
MODE COPY
NOCOPY
When you perform CESTPAIR command on SIz,
no matter whether you specify COPY or NOCOPY
for the MODE parameter, the storage system
recognizes it as COPY mode. Therefore, initial
full-volume copy will be performed.
1 Copy speed will be slow, except when the DKC
emulation type is 2105 or 2107. When the DKC
emulation type is 2105 or 2107, the copy speed
is always medium regardless what you specify
for the PACE parameter.
PACE
other than 1 Copy speed will be medium.
CRIT Not applicable. SIz does not use this parameter. Siz ignores it.
YES MSGREQ function is applicable.
Note that you cannot use the MSGREQ function
when the Add and Split operation is required. If you
specify YES for this parameter when the Add and
Split operation is required, the command will be
rejected and end abnormally by reporting CC = 8.
MSGREQ
NO MSGREQ function is not applicable.