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

Performing TrueCopy for z/OS Pair Operations 6-33
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
ICKDSF Considerations for TrueCopy for z/OS Volumes
The USP V supports the use of the ICKDSF utility program. ICKDSF performs
functions for the installation, use, and maintenance of DASD as well as service
functions, error detection, and media maintenance. Please refer to the IBM
document ICKDSF R16 Refresh User’s Guide (GC35-0033) for further
information on ICKDSF. Refer to the Mainframe Host Attachment and
Operations Guide (MK-96RD645) for further information on using ICKDSF with
the USP V.
ICKDSF on a TrueCopy for z/OS M-VOL
ICKDSF activities involve write I/O operations with device support
authorization instead of normal authorization. Since the MCU does not
duplicate write I/O operations with device support authorization at the R-VOL
of a TCz pair, you must suspend a TCz pair before running ICKDSF on a TCz
M-VOL. To perform ICKDSF on a TCz M-VOL:
1. Connect to the MCU of the pair, and open the TrueCopy for z/OS windows.
2. Suspend the pair, if not already suspended, using the R-VOL suspend option
and the TCzA Volume and Purge suspend options. You can also use the
CSUSPEND TSO command to suspend the pair.
3. After the M-VOL status changes to suspended/R-VOL by operator, run
ICKDSF to repair the M-VOL.
4. When volume repairs are complete, resynchronize the TCz pair. When
resynchronizing a suspended TCzA pair, make sure to use the appropriate
Resume Range option. You can also use the CESTPAIR (MODE=RESYNC)
command to resynchronize the pair.