IBM 86625RY Hardware Maintenance Manual - Page 126

Monitoring the physical device, information, disk array A, B, C, D, E, F, G, H.

Page 126 highlights

Blocked No - The logical drive is accessible. Yes - The logical drive is not accessible. Part of Array The identifier of the logical drive disk array (A, B, C, D, E, F, G, H). Part of Merge Group The identifier of the logical drive merge group (1 through 254). Date Created The date the logical drive was created. State The current state (see "Logical drive state descriptions" on page 82 for more information). Size The size in megabytes. RAID Level RAID level (0, 1, or 5). Write Policy WT - Write-through. WB - Write-back. NVRAM Battery Backup Enable - The battery-backup cache is On. Read Ahead Disable - The battery-backup cache is Off. Off - Disk Read-Ahead is inactive. Stripe-Unit Size Number of Chunks Stripe Order On - Disk Read-Ahead is active. The size of each stripe unit per hard disk (8, 16, 32, 64). The number of hard disk drives that make up the logical drive. The channel and SCSI ID of the physical drives that make up the logical drive. Monitoring the physical device information: You can monitor the physical device information by clicking on the desired device button on the Main screen of the Administration and Monitoring Program. Descriptions of the fields that might appear on the Device Management screen are as follows. Note The number of fields that appear on the Device Management screen depend on the physical device selected. Channel SCSI ID Vendor Serial Number Size The channel to which the device is connected (1, 2, or 3). The SCSI ID (0 to 15). The manufacturer of the physical device. The manufacturer identifier. The size in megabytes. 118 Netfinity Server HMM

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Blocked
No
- The logical drive is accessible.
Yes
- The logical drive is not
accessible.
Part of Array
The identifier of the logical drive
disk array (A, B, C, D, E, F, G, H).
Part of Merge Group
The identifier of the logical drive
merge group (1 through 254).
Date Created
The date the logical drive was
created.
State
The current state (see “Logical
drive state descriptions” on
page
82 for more information).
Size
The size in megabytes.
RAID Level
RAID level (0, 1, or 5).
Write Policy
WT
- Write-through.
WB
- Write-back.
NVRAM Battery Backup
Enable
- The battery-backup
cache is On.
Disable
- The battery-backup
cache is Off.
Read Ahead
Off
- Disk Read-Ahead is inactive.
On
- Disk Read-Ahead is active.
Stripe-Unit Size
The size of each stripe unit per
hard disk (8, 16, 32, 64).
Number of Chunks
The number of hard disk drives that
make up the logical drive.
Stripe Order
The channel and SCSI ID of the
physical drives that make up the
logical drive.
Monitoring the physical device
information:
You can monitor the physical device information by clicking
on the desired device button on the Main screen of the
Administration and Monitoring Program.
Descriptions of the fields that might appear on the Device
Management screen are as follows.
Note
The number of fields that appear on the Device
Management screen depend on the physical device
selected.
Channel
The channel to which the device is
connected (1, 2, or 3).
SCSI ID
The SCSI ID (0 to 15).
Vendor
The manufacturer of the physical
device.
Serial Number
The manufacturer identifier.
Size
The size in megabytes.
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