Functional and Operational Characteristics
2–31
Hitachi VSP User and Reference Guide
725
part 1
of 2
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
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)
OFF .
Mode Category Description Default MCU/RCU
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