Hitachi Virtual Storage Platform, User And Reference Manual

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Hitachi VSP User and Reference Guide
2–42
Functional and Operational Characteristics
803 Dynamic
Provisioning,
Data Retention
Utility While a HDP pool VOL is blocked, if a read or write
I/O is issued to the blocked pool VOL, this mode can
enable the Protect attribute of DRU for the target
DP-VOL.
Mode 803 = ON:
While a HDP 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 HDP 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.
Notes:
1. 1. This mode is applied when
- a file system using HDP pool VOLs is used.
- Data Retention Utility is installed.
2. 2. Because the DRU attribute is set to Protect
for the V-VOL, a read I/O is also disabled.
3. 3. If Data Retention Utility is not installed, the
expected effect cannot be achieved.
4. 4. The Protect attribute of DRU for the HDP V-
VOL can be released on the Data Retention
window of Storage Navigator after recovering
the blocked pool VOL.
OFF ..
Mode Category Description Default MCU/RCU