Mode
Category
Description
Default
MCU/RCU
725
Universal Volume
Manager
This option determines the action that will be taken when
the status of an external volume is Not Ready
Mode 725 = ON:
When Not Ready is returned, the external path is blocked
and the path status can be automatically recovered (Not
Ready blockade). Note that the two behaviors, automatic
recovery and block, may be repeated.
For version 60-05-06-00/00 and later, when the status of a
device is Not Ready blockade, Device Health Check is
executed after 30 seconds.
Mode 725 = OFF (default):
When Not Ready is returned three times in three minutes,
the path is blocked and the path status cannot be
automatically recovered (Response error blockade).
Notes:
1.
For R700 70-01-62-00/00 and lower (within 70-01-xx
range)
•
Applying this SOM is prohibited when USP V/VM is
used as an external subsystem and its external
volume is DP-VOL.
•
Applying this SOM is recommended when the
above condition (1) is not met and SUN storage is
used as an external storage.
•
Applying this SOM is recommended if the above
condition (1) is not met and a maintenance
operation such as firmware update causing
controller reboot is executed on the external
storage side while a storage system other than
Hitachi product is used as an external subsystem.
2.
For R700 70-02-xx-00/00 and higher, or later
models.
•
Applying this SOM is prohibited when USP V/VM is
used as an external subsystem and its external
volume is DP-VOL.
•
Applying this SOM is recommended when the
above condition (1) is not met and SUN storage is
used as an external storage.
•
Applying this SOM is recommended when the
above condition (1) is not met and EMC CX series
or Fujitsu Fibre CAT CX series is used as an
external storage.
•
Applying this SOM is recommended if the above
condition (1) is not met and a maintenance
operation such as firmware update causing
controller reboot is executed on the external
storage side while a storage system other than
Hitachi product is used as an external subsystem.
(Continued below)
3.
While USP V/VM is used as an external subsystem
and its volume is DP-VOL, if SOM e Pool-VOLs
constituting the DP-VOL are blocked, external path
blockade and recovery occurs repeatedly.
OFF
152
System option modes
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide