HP StorageWorks SAN Virtualization Services Platform Manager user guide (AG781-96017, March 2009)

DescriptionDisplay field
The name of the back-end LU.
If the back-end LU is exposed to VSM through an FC fabric switch, the name is
the world wide port name (WWPN) of a storage device that is exposing the
back-end LU, concatenated with the LUN.
If the back-end LU is exposed to VSM through an iSCSI fabric switch, the name
has no meaning. You may be able to use the management software provided by
the storage device vendor to identify each back-end LU, and then rename the back
end LU. For information about how to rename a back-end LU, see “Renaming
back-end LUs” on page 66.
Name
The status of the back-end LU. Possible values:
• Present—The VSM server recognizes the back-end LU on the SAN.
• Absent—The VSM server does not recognize the back-end LU on the SAN.
• Failed—The VSM server recognizes the back-end LU on the SAN, but cannot
access the back-end LU.
Status
The Logical Unit Number (LUN). A storage device system may expose multiple
logical units (back-end LUs) through the same physical ports. Each logical unit is
identified by a LUN.
LUN
Yes indicates that the back-end LU belongs to the domain. When a user adds a
back-end LU to a storage pool, the VSM server to which that user is connected
writes a signature on the back-end LU, which includes the domain name. The back-
end LU now belongs to that domain and can only be managed by connecting to
the VSM server that manages that domain.
Is Configured
The vendor of the storage device by which the back-end LU is exposed.Vendor
The model of the physical storage system exposing the back-end LU.Model
The storage capacity on the back-end LU available for allocation.Capacity
Indicates if the back-end LU is failed over.Is FailedOver
A free text field. To enter text into this field, right-click the back-end LU in the List
area and select Manage > Edit Comment.
Comment
The full storage capacity of the back-end LU. This is the value returned by a read
capacity iSCSI command and is slightly larger than the capacity available to VSM.
Real Capacity
The signature written to the back-end LU by the VSM server when the back-end LU
is configured as a storage pool member. When you add a back-end LU to a storage
pool, the VSM server to which you are connected writes a signature on the back-
end LU, which includes the domain name. The back-end LU now belongs to a
domain and can only be managed by connecting to the VSM server that manages
that domain.
Signature
The capacity of one sector or physical storage. The sector size is 512 bytes and
is common to all open systems.
Sector Size
The unique hardware ID of the back-end LU.Serial Number
The logical block address (LBA) of the last sector available for virtual disk allocation.Last LBA
The LBA of the last sector on the back-end LU.Real Last LBA
The time at which VSM first detected the back-end LU.Creation Time
Working with stripe sets72