Mode Category Description Default MCU/RCU
devices that share the Target port with the quorum disk on
the external system by setting the time to run a reset
command for the Target port to be the same (15 seconds)
as that to run other commands for the other external
devices.
Mode 1080 = ON:
The time to run the reset command for the quorum disk on
the external system is 15 seconds to eliminate the impacts
on commands run for the other external devices that share
the Target port with the quorum disk on the external
system.
If a response to ABTS is delayed for 12 seconds or longer,
the quorum disk may be blocked.
Mode 1080 = OFF (default):
The time to run a reset command for the quorum disk
when performance of a path degrades is 3 seconds so that
a retry is performed by an alternate path to avoid quorum
disk blockage.
Note:
1. The mode is applied if avoiding impacts on
commands for other external devices sharing
a Target port on an external system side with
a quorum disk is prioritized over preventing
quorum disk blockage when a response to
ABTS is delayed.
The delay is caused due to path performance
degradation in a configuration where the
Target port is shared between external
devices and the quorum disk.
2. When connection performance degradation
occurs, the quorum disk blockage is more
likely to occur.
1083 Dynamic
Provisioning
Universal Volume
Manager
The mode enable or disable DP-VOL deletion while an
external volume associated with the DP-VOL with data
direct mapping attribute is not disconnected.
Mode 1083 = ON:
DP-VOL deletion is enabled.
Mode 1083 = OFF (default):
DP-VOL deletion is disabled.
Note:
1. The mode is applied when the following
conditions are met.
• A DP-VOL with data direct mapping
attribute is deleted.
Inactive -
System option modes 173
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
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