Hitachi Virtual Storage Platform User Manual

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

Hitachi Virtual Storage Platform Specifications

General

Drive Types	SSD, SAS
RAID Support	RAID 1, RAID 5, RAID 6, RAID 10
Connectivity	Fibre Channel, iSCSI, FCoE
Form Factor	Rack-mounted
Category	Enterprise Storage System
Data Reduction	Deduplication and Compression (capabilities vary by model and software version)
Operating System Compatibility	Windows, Linux, UNIX, VMware
High Availability	Redundant components
Scalability	Scale-up and scale-out
Model	Virtual Storage Platform (VSP)