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

6-4 Performing TrueCopy for z/OS Pair Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
RCU: Select the RCU (the serial number, the LDKC number, the CU number,
SSID, and path type) for the TCz pair(s) being created. The RCUs which have
been added to the current MCU are displayed. The RCU must be the same for
all pairs being created during one operation.
M-VOL Fence Level (Synchronous only): Select the fence level for the new
pair(s) (default = Never).
Data: the M-VOL will be fenced (reject write operations) when the MCU
cannot successfully execute an update copy operation for any reason. This
setting is functionally equivalent to the CRIT(YES-ALL) parameter for the
CESTPAIR command.
Status: the M-VOL will be fenced only if the MCU is not able to change the
R-VOL status to suspended when an update copy operation fails. This setting
is functionally equivalent to the CRIT(YES-PATHS) parameter for the
CESTPAIR command.
Never: the M-VOL will never be fenced. This setting is functionally
equivalent to the CRIT(NO) parameter for the CESTPAIR command.
Note: For further information on the CESTPAIR CRIT parameter and its two
modes of operation, CRIT(YES-PATHS) and CRIT(YES-ALL),
Initial Copy Parameters: Select the initial copy options for the new pair(s).
Initial Copy (default = Entire Volume):
Entire Volume= copy the data in all M-VOL tracks to R-VOL. This setting
is functionally equivalent to the MODE=COPY parameter for the CESTPAIR
command.
None = do not copy any M-VOL data to R-VOL. This setting is functionally
equivalent to the MODE=NOCOPY parameter for the CESTPAIR command.
WARNING: The user must ensure that the M-VOL and R-VOL are already
identical when using the No Copy setting.
Copy Pace: desired number of tracks to be copied at one time during the
initial copy operation (default = 15):
15 Tracks. This setting is functionally equivalent to the PACE=2-255
parameter for the CESTPAIR TSO command.
3 Tracks. This setting is functionally equivalent to the PACE=1 parameter
for the CESTPAIR command.
Priority: priority (scheduling order) of the initial copy operations (1-256).
The default setting is 32. Note: The CESTPAIR TSO command does not
support the initial copy priority option. When CESTPAIR is used to establish
TCz pairs, the initial copy operations are performed in the order that the
CESTPAIR commands are issued.