Functional and Operational Characteristics
3-19
Hitachi Universal Storage Platform V/VM User and Reference Guide
Mode
Category
Function
Default
MCU/RCU
506
Universal
Replicator,
Universal
Replicator for z/OS
Enables Delta Resync with no host update I/O by copying only
differential JNL instead of copying all data.
The HUR Differential Resync configuration is required.
Mode 506 = ON (default):
Without update I/O: Delta Resync is enabled.
With update I/O: Delta Resync is enabled.
Mode 506 = OFF:
Without update I/O: Total data copy of Delta Resync is
performed.
With update I/O: Delta Resync is enabled.
Note:
Even when mode 506 is set to ON, the Delta Resync
may fail and only the total data copy of the Delta Resync
function is allowed if the necessary journal data does not exist
on the primary subsystem used for the Delta Resync
operation.
ON MCU/RCU
530
Universal
Replicator for z/OS
When a UR for z/OS pair is in the duplex state, this option
switches the display of Consistency Time (C/T) between the
values at JNL restore completion and at JNL copy completion.
Mode 530 = ON: C/T displays the value of when JNL copy is
completed.
Mode 530 = OFF: C/T displays the value of when JNL restore
is completed.
Note:
At the time of Purge suspend or RCU failure suspend,
the C/T of UR for z/OS displayed by Business Continuity
Manager or Storage Navigator may show earlier time than the
time shown when the pair was in the duplex state.
OFF RCU
531
OPEN and
mainframe
When PIN data is generated, the SIM currently stored in SVP
is reported to the host.
Mode 531 = ON: The SIM for PIN data generation is stored in
SVP and reported to the host.
Mode 531 = OFF: The SIM for PIN data generation is stored in
SVP only, not reported to the host, the same as the current
specification.
OFF MCU/RCU
545 Mainframe
When creating the record #0 field, this option is used to allow
the record #0 format with the WRFTK (x95) command in the
case the CCHH of Count part transferred from the host differs
from the CCHH of the currently accessed track address.
Mode 545 = ON: The record #0 format is allowed.
Mode 545 = OFF: The record #0 format is not allowed.
Note:
Use this mode when CU type 2107 is used, or INVALID
TRACK FORMAT ERROR occurs on VM MINIDISK.
OFF MCU
