the HDD mounted position remains the same at the time of
the parity group uninstallation or installation.
2. After the operation using this option is completed, the
mode must be set back to Off; otherwise, the LED of the
HDD to be removed will not light up at subsequent parity
group uninstalling operations
725
This option determines an action when Not Ready is
returned from the external volume.
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 blockade, may be repeated.
From version 60-05-06-00/00, the following is added.
For the device of Not Ready blockade, the Device Health
Check is executed after 30 seconds.
Mode 725 = OFF:
When Not Ready is returned 3 times in 3 minutes, the path
is blocked and the path status cannot be automatically
recovered (Response error blockade).
Notes:
1. For HUS VM:
(1) Applying this System Option Mode is prohibited when
USP V/VM is used as an external subsystem and its external
volume is DP-VOL.
(2) Applying this System Option Mode is recommended
when the above condition (1) is not met and SUN storage is
used as an external storage.
(3) Applying this System Option Mode is recommended
when the above condition (1) is not met and EMC CX series,
VNX series, or Fujitsu Fibre CAT CX series is used as an
external storage.
(4) Applying this System Option Mode 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. While USP V/VM is used as an external subsystem and its
volume is DP-VOL, if some Pool-VOLs constituting the DP-
VOL are blocked, a phenomenon of external path blockade
and recovery occurs repeatedly.
3. In the case that a virtual volume mapped by UVM is set
to pool-VOL and used as DP-VOL in local subsystem, this
System Option Mode can be applied without problem.
OFF
729
To set the Protect attribute for the target DP-VOL using the
DRU, when any Write operation is requested to the area
OFF
62
System option modes
Hitachi Virtual Storage Platform G400, G600 Hardware Reference Guide
Summary of Contents for Virtual Storage Platform G400
Page 1: ...Hitachi Virtual Storage Platform G600 Hardware Reference Guide MK 94HM8022 05 June 2016 G400 ...
Page 6: ...6 Hitachi Virtual Storage Platform G400 G600 Hardware Reference Guide ...
Page 16: ...16 Preface Hitachi Virtual Storage Platform G400 G600 Hardware Reference Guide ...
Page 123: ...Hitachi Virtual Storage Platform G400 G600 Hardware Reference Guide ...
