Hitachi VSP Gx00 series User Manual

Mode Category Description Default MCU/RCU
1083 Dynamic
Pr
ovisioning
Universal
Volume
Manager
This SOM enables or disables 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.
Notes:
1. This SOM is applied when the following
conditions are met.
■ A DP-VOL with data direct mapping attribute
is deleted.
■ The data of external volume with data direct
mapping attribute associated with a deletion
target DP-VOL with data direct mapping
attribute will not be used again.
2. When SOM 1083 is set to ON, the data of
external volumes cannot be guaranteed.
3. When DP-VOL deletion is performed without
disconnecting an external volume, the data of
the external volume cannot be guaranteed.
OFF -
1086 Dynamic
Provisioning
Universal
Volume
Manager
This SOM enables or disables the performance
improvement for Dynamic Provisioning volumes that
are Universal Volume Manager volumes used as pool
volumes.
Mode 1086 = ON (default): The performance
improvement is enabled.
Mode 1086 = OFF: The performance improvement is
disabled.
Notes:
1. This SOM is applied when the IOPS performance
of an external storage system is higher than 80k
× the number of installed MPBs, which is the
value of IOPS that an entire local storage system
sends to an external storage system.
2. When it is required to set this SOM to OFF, if
IOPS sent from the local storage system to the
external storage system is higher than 80k × the
number of installed MPBs, reduce the IOPS to
lower than 80k × the number of installed MPBs,
and then set this SOM to OFF. (Otherwise CWP
increases and cache is overloaded.)
ON -
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 341

Hitachi VSP Gx00 series Specifications

General

Brand	Hitachi
Model	VSP Gx00 series
Category	Storage
Language	English