Mode
Category
Description
Default
MCU/RCU
729
Dynamic
Provisioning
Data
Retention
Utility
When a DP pool is full, if any write operation is
requested to the area where the page allocation is
not provided, this SOM can enable the DRU Protect
attribute for the target DP-VOL.
Mode 729 = ON:
Set the DRU Protect attribute for
the target DP-VOL when any write operation is
requested to the area where the page allocation is
not provided at a time when the DP pool is full. (Not
to set in the case of Read request.)
Mode 729 = OFF (default):
Do not set the DRU
Protect attribute for the target DP-VOL when any
write operation is requested to the area where the
page allocation is not provided at a time when DP
pool is full.
For details, contact customer support (see SOM729 &
803 sheet).
Notes:
1.
This SOM is applied when:
■
The threshold of pool is high (for example,
95%) and the pool may be full.
■
File system is used.
■
Data Retention Utility is installed.
2.
Since the Protect attribute is set for V-VOL, the
Read operation cannot be allowed as well.
3.
When Data Retention Utility is not installed, the
desired
effect
is not achieved.
4.
Protect attribute can be released from the
Data
Retention
window of Device Manager - Storage
Navigator after releasing the full status of the
pool by adding a Pool-VOL.
5.
With 83-01-21-x0/00 and later, the Virtual
Volume Protection (VVP) function is supported.
VVP can be enabled/disabled for each pool.
With SOM 729 disabled, VVP is also disabled by
default, but you can enable VVP for each pool as
needed. With SOM 729 enabled, VVP is also
enabled automatically (by default) when you
create a new pool.
Caution:
A pool is NOT
protected by ANY FUNCTION if you deliberately
turn VVP for the pool from ON (default) to OFF,
even with SOM 729 enabled.
OFF
-
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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