Mode Category Description Default MCU/RCU
803 Dynamic
Pr
ovisioning
Data
Retention
Utility
While a DP pool VOL is blocked, if a read or write I/O
is issued to the blocked pool VOL, this SOM can
enable the Protect attribute of DRU for the target DP-
VOL.
Mode 803 = ON: While a DP pool VOL is blocked, if a
read or write I/O is issued to the blocked pool VOL,
the DRU attribute is set to Protect.
Mode 803 = OFF (default): While a DP pool VOL is
blocked, if a read or write I/O is issued to the blocked
pool VOL, the DRU attribute is not set to Protect.
For more details, contact customer support (see
SOM729 & 803 sheet).
Notes:
1. This SOM is applied when:
■ A le system using DP pool VOLs is used.
■ Data Retention Utility is installed.
2. Because the DRU attribute is set to Protect for
the V-VOL, a read I/O is also disabled.
3. If Data Retention Utility is not installed, the
expected eect cannot be achieved.
4. The Protect attribute of DRU for the DP V-VOL
can be released on the Data Retention window
of Device Manager - Storage Navigator after
recovering the blocked 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 803 disabled, VVP is also disabled by
default, but you can enable VVP for each pool as
needed. With SOM 803 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 803 enabled.
OFF -
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 318
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