HP XP P9500 Owner's Manual page 37

Table 1 1 System option modes (continued)
Mode Category
725 External Storage
part 2 of
2
729 Thin Provisioning
Data Retention
Downloaded from www.Manualslib.com
Description
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)
Notes: (continued)
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.
4. When a virtual volume mapped by UVM is set to pool-VOL
and used as DP-VOL in local subsystem, this SOM can be applied
without problem.
To set the Protect attribute for the target DP-VOL using Data
Retention (Data Ret), when any write operation is requested to
the area where the page allocation is not provided at a time
when the HDP Pool is full.
Mode 729 = ON:
To set the Protect attribute for the target DP-VOL using Data Ret,
when any write operation is requested to the area where the
manuals search engine
System option modes, host modes, and host mode options
Default MCU/RCU
OFF .
OFF .
37