HP StorageWorks SAN Virtualization Services Platform Manager User Guide (5697-0454, May 2010)

Back-end LU information—Back-End LU Segment tab
The Back-End LU Segment tab shows the mappings of virtual disks to segments of the selected back-end
LU. Each line represents a back-end LU segment.
Table 22 Back-End LU Segment tab
DescriptionProperty
The row number.No
The name of a virtual disk mapped to a segment of the selected back-end LU. If
no name appears, the segment is empty. An empty segment is due to the deletion
of a virtual disk or available space at the end of the back-end LU.
Virtual Disk
The first LBA of a back-end LU segment.Start LBA
The number of LBAs in the back-end LU segment.LBA Count
The time at which the virtual disk was last modified. The modification may be a
deletion or creation. For an empty segment, the modification time may see the
deletion of a virtual disk.
Modification Time
The user who performed the last modification to the virtual disk which affected this
segment.
Modified By
Back-end LU information—Access Path tab
The Access Path tab provides information about the connectivity paths through which the active VSM
server can access the selected back-end LU. Multiple access paths may be facilitated by any or all of
the following:
• More than one HBA on the VSM server connected to the SAN fabric.
• More than one storage system controller exposing the back-end LU.
• More than one port on a storage system controller exposing the back-end LU.
Table 23 Back-end LU Access Path tab fields
DescriptionProperty
The node name of the storage system which is presenting the back-end LU. The
icon that appears next to the node name indicates the status of the access path:
•
—The access path is OK.
•
—The access path failed.
•
—The access path is absent.
Node Name
The name of a port on the storage system through which the back-end LU is
presented.
Port Name
The ID of the SAN fabric port to which the storage system is connected. This is
retrieved by VSM from the fabric switch.
Port ID
An ID that the HBA on the VSM server assigns to each storage system controller
port. Windows reports the path ID as the bus number on back-end LU properties.
The path ID, together with the target ID, identifies the back-end LU.
Path ID
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