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Logical unit information – Grass Valley Network Attached Storage System Serial ATA Network User Guide v.1.0.04 User Manual

Page 128

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Logical Unit Information

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127

Select the logical unit. Use the arrow next to the drop-down list box, and select
the

number of the logical unit

. The Logical Unit Information window displays

details about each logical unit:

Field

Description

Status

Indicates the status of the logical unit as a whole.

Some possible states are: OK, Unformatted, Duplicate logical unit
number, Formatting, or Rebuilding. If the status is Formatting or
Rebuilding, a link displays the current progress of that operation.

Host Device Name

The name used by the host system to identify the logical unit.

Controller A Accessibility

Indicates the state of the loops on controller A. Possible states are:
OK (on one or both loops), Unavailable (both loops), or Failed
(both loops).

Controller B Accessibility

This field is present only in a dual controller system. Indicates the
state of the loops on controller B. Possible states are: OK (on one
or both loops), Unavailable (both loops), or Failed (both loops).

Max. User Blocks

Maximum number of host system blocks in the array.

User Logical Blocks

Maximum capacity in host logical blocks. This is

the same as the maximum user blocks.

Logical Unit Capacity

Number of gigabytes on the logical unit.

Cache Segment Max.
Blocks

The number of host system blocks that fit into one cache segment.

Disks Used

List of the disks, by disk number, that comprise the logical unit. A
disk number has the format n-m, where n is the enclosure ID and m
is the disk number within the enclosure. The enclosure ID number
appears on the back side of each physical enclosure. Disks are
numbered from left to right, start at 1.

Drive Block Size

The logical block size on the disk drive. Currently, the size is
always 512KB.

Array Stripe Size

The number of bytes of data written to a single disk drive. The
stripe size can be: 8KB or 16KB.

Min. Drive Capacity

Number of gigabytes on the smallest disk drive in

the logical unit.