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

Using PPRC Commands for TrueCopy for z/OS A-21
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
CDELPAIR
Table A-9 describes how to use the CDELPAIR command to release TCzA pairs
and groups at the MCU. The syntax for the CDELPAIR command is:
For 3990-6 and -6E controller emulations:
CDELPAIR DEVN(X’dev#’) PRIM(X’ssid’ cmd_param X’cca’ X’lss’) SEC(X’ssid’
serial# X’cca’ X’lss’)
For 2105 and 2107 controller emulation (new ‘lss’ parameter for LCU number):
CDELPAIR DEVN(X’dev#’) PRIM(X’ssid’ cmd_param X’cca’ X’lss’) SEC(X’ssid’
serial# X’cca’ X’lss’)
Table A-9 Using CDELPAIR to Release TrueCopy for z/OS Async
Pairs/Groups at the MCU
Parameters Contents Description
AG000
Specifies that all pairs in the consistency group* should be released. All
pending recordsets will be settled before releasing the pairs.
cmd_param
Note: This parameter is
for TCz Async only. For
Sync replace
cmd_param with the
serial number of the
primary storage system.
AV000
Specifies that only the addressed pair should be released. All pending
recordsets for the addressed volume will be settled before releasing the
pair.
* Only TCzA pairs in the same storage system are released. Pairs whose M-VOLs are behind other MCUs
are not affected.
Notes:
• If the first digit of the cmd_param is other than A, the storage system
interprets this command as pair release for TCz Synchronous or
ShadowImage for z/OS.
• The specified pair(s) will be released regardless of their pair status. Once the
pair(s) is/are released, the volume(s) will not indicate their pair status before
pair release. To release TCzA pairs with their update sequence consistency
ensured:
– Issue the CSUSPEND command with cmd_param of AGP00 or AGD00.
– Issue CQUERY to confirm that the specified pairs have been successfully
suspended with the consistency status of Group.
– Issue the CDELPAIR command.
• Regardless of the number of pairs to be released, this command ends before
the actual pair release is successfully completed. Confirmation by CQUERY or
IEA494I console message is recommended after this command.