Hitachi VSP F400, System Administration Manual, Page: 380 / 414

Mode Category Description Default MCU/RCU
1. This SOM is applied when the page problem occurs in
an environment where Symantec ASL 6.0.5 or higher is
used and SOM 972 and/or 973 is set to ON.
2. When this SOM is set to ON, reclamation processing is
delayed.
3. The priority of setting when SOMs are set at the same
time is SOM 1069, 972, and then 973. The setting of
higher priority SOM is enabled.
1070 Global-active
device This SOM changes the processing for a group operation with
GAD consistency group (CTG).
Mode 1070 = ON: The status change of all pairs in a
consistency group. is performed for 50 msec.
Mode 1070 = OFF (default): The status change of all pairs
in a consistency group is performed for 1 msec.
Notes:
1. This SOM is applied when reducing the time to complete
status change of all pairs in a consistency group at a
group operation (suspension and resync operation) with
the GAD CTG function. In a system configuration where
host I/O performance is prioritized, do not use this SOM
because setting this SOM may affect the host I/O
performance.
2. The MP usage rate increases during status change of all
pairs in a consistency group. For details about
approximate percentage increase in MP usage rate,
contact customer support (see SOM1070 sheet).
OFF Both
1079 Dynamic
Provisioning
Dynamic Tiering
This SOM is set not to run the Proprietary ANCHOR command
during microcode downgrade from a version that supports
the Proprietary ANCHOR command to a version that does not
support the command.
Mode 1079 = ON: The Proprietary ANCHOR command is
unavailable.
Mode 1079 = OFF (default): The Proprietary ANCHOR
command is available.
Notes:
1. This SOM is applied when downgrading the microcode
from a version that supports the Proprietary ANCHOR
command to a version that does not support the
command.
2. Whether the Proprietary ANCHOR command can be run
or not varies depending on the setting combination of
SOM 1079 and HMO 97 as follows:
a. SOM 1079 setting ON/HMO 97 setting ON -->
Proprietary ANCHOR command Unavailable
b. SOM 1079 setting ON/HMO 97 setting OFF -->
Proprietary ANCHOR command Unavailable
c. SOM 1079 setting OFF/HMO 97 setting ON -->
Proprietary ANCHOR command Available
d. SOM 1079 setting OFF/HMO 97 setting OFF -->
Proprietary ANCHOR command Unavailable
OFF -
380 System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models