HP StorageWorks XP Remote Web Console Software - Manual (Page 10)

10 LUN Security XP Extension for the XP128/XP1024/XP10000/XP12000
• Protect: Open systems hosts cannot access the logical volume. Open systems hosts cannot perform read
or write operations on the logical volume.
Continuous Access XP and BC XP cannot copy data to or from logical volumes that have the Protect
attribute.
Figure 1 shows access attributes for logical volumes 00, 01, and 02. The access attribute of logical volume
03 is Can't Guard, which means you cannot assign any access attribute to the logical volume. LUN
Security XP Extension cannot assign access attributes to:
• Mainframe volumes
• Logical volumes (logical devices) that are not mapped to physical devices
Figure 1 Example of access attributes
If you change a logical volume’s access attribute to Read Only or Protect, you cannot change the access
attribute to Read/Write for a selected time period called the Retention Term.
For example, in
Figure 1 , you cannot change logical volume 01’s access attribute to Read/Write within
the next 2,190 days, but you can change logical volume 02’s access attribute because its Retention Term
is over. To change a volume’s access attribute before its Retention Term ends, contact your HP support team
representative.
You are prompted to specify the retention term when you change the logical volume’s access attribute to
Read Only or Protect. After the retention term is set, you can only extend the term. For more information,
see ” Modifying retention terms ” on page 18.
CAUTION: After the retention term is set for a particular volume, there is no way to shorten the term.
If you set the Expiration Lock to ON (Enable on an XP10000/XP12000), attempts to change Read Only or
Protect volumes to Read/Write fail even if the retention term is over. Expiration Lock is OFF when you start
LUN Security XP Extension for the first time. For more information, see ” Prohibiting changes to Read/Write
volumes after the retention term ends ” on page 19.
Also note the following:
• If a host computer attempts to write data to a read-only logical volume, the write operation fails and the
write failure is reported to the host.
• If a host computer attempts to read data from or write data to a logical volume with the Protect
attribute, the attempt fails and the failure is reported to the host.
• When Hitachi Multiplatform Backup and Restore (HMBR) is used and a mainframe host attempts to
write data to a logical volume with the Read Only attribute, the write operation fails and Write
Inhibit
is reported to the host.
• When HMBR is used and a mainframe host attempts to read data from or write data to a logical
volume with the Protect attribute, the access operation fails and cc=3 is reported to the host.
Using LUN Security XP Extension with other products
Do not perform LUN Security XP Extension operations on a volume on which another operation, such as
Auto LUN Monitoring, is running.
Do not assign an access attribute to a logical volume if any job is manipulating data on the logical
volume. If you assign an access attribute to such a logical volume, the job might end abnormally.
• Logical volumes: You cannot use LUN Security XP Extension to change the access attribute of the
following logical volumes:
• Logical volumes with emulation types other than OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-K,
OPEN-L, OPEN-M, and OPEN-V