HP XP Array Manager Software - Manual (Page 8)

If a volume has the Read/Write attribute, open-systems hosts can perform both read and write
operations on the volume.
You can use storage system copy software to copy data to volumes that have the Read/Write at-
tribute. However, if necessary, you can prevent copying data to volumes that have the Read/Write
attribute.
All open-systems volumes have the Read/Write attribute by default.
• Read Only
If a volume has the Read Only attribute, open-systems hosts can perform read operations, but
cannot perform write operations on the volume.
You cannot use storage system copy software to copy data to volumes that have the Read Only
attribute.
• Protect
If a volume has the Protect attribute, open-systems hosts cannot access the volume. Open-systems
hosts cannot perform either read or write operations on the volume.
You cannot use storage system copy software to copy data to volumes that have the Protect attribute.
Data Retention Utility does not allow you to assign any access attribute to:
• mainframe volumes
• volumes that are not mapped to physical devices
To assign access attributes to volumes, you use Remote Web Console to start Data Retention Utility,
and then edit the access attributes in the Data Retention window.
For details on how to assign access attributes, see “ Changing the Access Attributes ” on page 19.
While the storage administrator can set access attributes to the volumes in any CUs (Control Units) in
the storage system, the storage partition administrator can set access attributes only to the volumes
in CUs in the SLPR the storage partition administrator manages. Therefore, if you are a storage partition
administrator and using the Data Retention window (see
Figure 1 on page 15), only the CUs in your
SLPR are displayed in the window. The CUs in the SLPRs which are managed by other storage partition
administrators are not displayed.
For detailed information on SLPR, see the HP StorageWorks XP24000/XP20000 Disk/Cache Partition
User Guide.
Data Retention Term Function
If you change the access attribute of a volume to Read Only or Protect, you will usually be prohibited
from changing the access attribute to Read/Write for a certain period of time. The Data Retention
window displays the words Retention Term to indicate the period during which attempts to change
the access attribute to Read/Write are prohibited.
You will be prompted to specify a retention term when you change the access attribute of a volume
to Read Only or Protect.
After you specify the retention term, you can extend the term, but cannot shorten the term. For details
on how to extend the retention term, see “
Extending the Data Retention Term ” on page 20. If you
need to shorten the retention term, you must ask your HP service representative to do so.
About XP Data Retention Utility Operations 8