Hitachi Universal Storage Platform V Reference Manual page 72

Mode Category
714 TrueCopy Async,
ShadowImage,
Volume Migration
(Mainframe/OPEN)
720 Universal Volume
Manager
(mainframe and
open)
721 Common
3-28
Hitachi Universal Storage Platform V/VM User and Reference Guide
When TCA is coordinated with SI or VM, regardless of CLPR#
of Quick Restore P-VOL and S-VOL or Volume Migration
source and target volumes, this option is used to accept an
operation request of Quick Restore or Volume Migration
Mode 714 = ON: When TCA is coordinated with SI or VM, an
operation request of Quick Restore or Volume Migration is
accepted regardless of CLPR# of Quick Restore P-VOL and
S-VOL or Volume Migration source and target volumes.
Mode 714 = OFF (default): When TCA is coordinated with SI
or VM, an operation request of Quick Restore or Volume
Migration is rejected if CLPR# differ between Quick Restore P-
VOL and S-VOL, or between Volume Migration source and
target volumes.
Note: This option is applied when canceling the prevention of
the request (1) or (2) below.
(1) A Quick Restore operation is requested when the P-VOL
and S-VOL of SI that is coordinated with TCA have different
CLPR#.
(2) A Volume Migration operation is requested when the
source and target volumes have different CLPR# with the
migration source volume also used as TCA volume.
Supports the Active Path Load Balancing (APLB) mode.
Mode 720 = ON: The alternate path of EVA (A/A) is used in
the APLB mode.
Mode 720 = OFF (default): The alternate path of EVA (A/A) is
used in the Single mode.
Note: Though online setting is available, the setting will not
be enabled until Check Paths is performed for the mapped
external device.
When a parity group is uninstalled or installed, the following
operation is performed according to the setting of mode 721.
Mode 721 = ON: When a parity group is uninstalled or
installed, the LED of the drive for uninstallation is not
illuminated, and the instruction message for removing the
drive does not appear. Also, the windows other than that of
parity group, such as DKA or DKU, are unavailable to select.
Mode 721 = OFF (default): When a parity group is uninstalled
or installed, the operation is as before: the LED of the drive is
illuminated, and the drive must be unmounted and
remounted.
Note:
When the RAID level or emulation type is changed for the
existing parity group, this option should be applied only if
the drive mounted position remains the same at the time
of the parity group uninstallation or installation.
After the operation using this option is completed, the
mode must be set back to OFF; otherwise, the LED of the
drive to be removed will not be illuminated at subsequent
parity group uninstalling operations.
Functional and Operational Characteristics
Function Default MCU/RCU
OFF MCU/RCU
OFF –
OFF –