HP XP20000XP24000 Disk Array - Manual (Page 16)

• Expiration Lock: Expiration lock is a function for implementing stronger protection on volumes. If
you enable expiration lock, attempts to change the access attribute from Read Only or Protect to
Read/Write will fail, even after the retention term.
Either of the following buttons is displayed to the right of Expiration Lock. When you start Data
Retention Utility for the first time, Disable -> Enable is displayed.
• Disable -> Enable
When this button is displayed, expiration lock is disabled. You can change the access attribute
to Read/Write when the retention term is over (that is, when Retention Term displays 0 days).
If you click the Disable -> Enable button, expiration lock will be enabled, and the button
will change to Enable -> Disable.
• Enable -> Disable
When this button is displayed, expiration lock is enabled. You cannot change the access
attribute to Read/Write, even when the retention term is over (that is, even when Retention
Term displays 0 days).
If you click the Enable -> Disable button, expiration lock will be disabled, and the button
will change to Disable -> Enable.
• Apply: This button applies settings in the Data Retention window to the storage system.
• Cancel: This button discards setting changes made before Apply is clicked.
Volume List
The volume list is displayed in the right area of the Data Retention window when you select a CU in
the tree. The volume list displays a list of volumes in the specified CU and enables you to find the
access attribute of each volume.
Note: If two or more volumes are combined into a LUSE volume, Data Retention Utility displays
the top LDEV, but does not display other LDEVs (other volumes) that are combined into the
LUSE volume. For example, if three volumes 03, 04, and 05 in the CU 01 are combined
into a LUSE volume, the volume list in the Data Retention window displays the volume number
03, but does not display 04 and 05. To view all volumes that form a LUSE volume, see
“ Viewing a List of Logical Volumes Combined into a LUSE Volume ” on page 25.
The volume list headings are:
• LDEV: This column displays volume numbers. Volumes are indicated by the following icons:
•
: Indicates a volume that has the Read/Write attribute.
• : Indicates a volume that has the Read Only attribute.
• : Indicates a volume that has the Protect attribute.
If the symbol # is displayed to the right of a volume number, the volume is an external volume.
If V is displayed to the right of a volume, the volume is a virtual volume. If X is displayed to the right
of a volume, the volume is a virtual volume for HP StorageWorks XP Thin Provisioning Software.
Note: If two or more volumes are combined into a LUSE volume, Data Retention Utility counts the
number of the combined volumes as one. For example, if you combine five volumes into one LUSE
volume, the number of volumes is one, not five.
• Attribute: This column indicates the access attribute of each volume.
Note: To assign the access attribute to a volume, you can also use RAID Manager.
• Emulation: This column displays volume emulation types.
If an asterisk and a number appear to the right of an emulation type, the volume is a LUSE
volume. For example, OPEN-3*36 indicates a LUSE volume into which 36 volumes are combined.
For detailed information about LUSE volumes, see the HP StorageWorks XP24000 LUN Expansion
User’s Guide.
• Capacity: This column displays the capacity of each volume. The unit is gigabytes (GB) and
the capacity is shown to two decimal places.
• S-VOL: This column indicates whether each volume can be specified as a secondary volume,
which is a copy destination volume for storage system copy operations.
Note: The storage system documentation sometimes uses the acronym S-VOL for secondary
volume.
16 Using the Data Retention Utility GUI