Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

Using PPRC Commands for TrueCopy for z/OS A-17
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Table A-7 Using CESTPAIR to Establish and Resynchronize TrueCopy for
z/OS Async Pairs
Parameter Contents Description
cmd_param
Note: This
parameter is
for TCz Async
only. For TCz
Sync replace
cmd_param
with the serial
number of the
primary
storage
system.
AGnnd
nn =
consistency
group number
(00-7F) or
master volume
number (00-FF)
for dummy pair
mode.
d = 0, N, or D
Without MODE(RESYNC): Specifies the consistency group number nn
to which the pair will belong.
With MODE(RESYNC): Specifies that all M-VOLs in the consistency group
should be resynchronized.
nn must specify the consistency group number of the addressed device or
the master volume number.
d specifies the delay option for command retry due to sidefile:
0 = normal delay for command retry starting at HWM)
N = no delay time: no command retry delay due to sidefile for this pair.
Note: Use the N setting only for a limited number of critical volumes.
D = dummy pair mode (nn must specify the master volume number).
AVnnd
nn =
consistency
group number
(00-7F) or
master volume
number (00-FF)
for dummy pair
mode.
d = 0, N, or D
With MODE(RESYNC) : Specifies that only the addressed device
should be re-synchronized.
nn must specify the consistency group number of the addressed device or
the master volume number.
d specifies the delay option for command retry due to sidefile:
0 = normal delay for command retry starting at HWM
N = no delay time: no command retry delay due to sidefile for this pair.
Note: Use the N setting only for a limited number of critical volumes.
D = dummy pair mode (nn must specify the master volume number).
PACE (pace)
Specifies the pace of the initial copy operation: 1-255, default=15
tracks.
CRIT (YES)
Specifies the Error Level (TCzA pair option) of Group.
(NO)
Specifies the Error Level (TCzA pair option) of Volume.
Notes:
• If the first digit of the cmd_param is other than A, the storage system
interprets this command as pair establishment for TCz Synchronous or
ShadowImage for z/OS.
• The consistency group nn must be registered prior to this command.
Otherwise this command will be rejected.
• When MODE(RESYNC)is specified, the consistency group number n must be the
consistency group number to which the addressed device belongs. If a
different number is specified, this command will be rejected.
• When MODE(RESYNC)is specified, the copy mode (synchronous or
asynchronous) cannot be changed. If a different copy mode is specified, this
command will be rejected.
• If the consistency group requirements are not satisfied, this command
may/may not be rejected.
• The delay option prevents command retry delay for this pair when sidefile is
above the HWM. If not specified correctly, command is rejected (F/M=04).