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Logical Drive (Fujitsu) Service

The Logical Drive (Fujitsu) service monitors the status of a logical drive on a Fujitsu server.

Service Type

SNMP

Instances on a Device

100

Supported Systems/Applications

Fujitsu servers running the Fujitsu ServerView agent.

Device Class for CPU (SNMP)

Servers - Generic or Servers - Windows

Monitored By

Windows Agent

Logical Drive

Enter the name of the monitored logical drive. For a list of logical drives, query the device with the .1.3.6.1.4.1.231.2.49.1.6.2.1.14 SNMP OID.

Scanning

You can configure the scan interval according to either a Once a Day or Daily Interval schedule.

Object Descriptors

Numerical OID

$Status 1.3.6.1.4.1.231.2.49.1.6.2.1.19
$ArraySize 1.3.6.1.4.1.231.2.49.1.6.2.1.3
$RAIDLevel 1.3.6.1.4.1.231.2.49.1.6.2.1.6
$StripeSize 1.3.6.1.4.1.231.2.49.1.6.2.1.7
$WriteMode 1.3.6.1.4.1.231.2.49.1.6.2.1.8
$ReadMode 1.3.6.1.4.1.231.2.49.1.6.2.1.15
$CacheMode 1.3.6.1.4.1.231.2.49.1.6.2.1.16
$DiskCacheMode 1.3.6.1.4.1.231.2.49.1.6.2.1.17
$InitializationStatus 1.3.6.1.4.1.231.2.49.1.6.2.1.18

Status Detail

Description

Status

Describes the current status of the monitored logical drive with values mapped as:

  • Normal: 2
  • Failed: 1, 3-14

where:

  1. Unknown
  2. Operational
  3. Partially Degraded
  4. Degraded
  5. Failed
  6. Rebuilding
  7. Checking
  8. MDCing
  9. Initializing
  10. Background Initializing
  11. Migrating
  12. Copying
  13. Offline
  14. In Use Spare

Initialization Status

Describes the current status of the initialization of the logical drive with values mapped as:

  • Normal: 2
  • Failed: 1, 3

where:

  1. Unknown
  2. Initialized
  3. Not Initialized

Array Size

Indicates the total size of the disk array.

RAID Level

Indicates the RAID level used by this array.

Stripe Size

Specifies the size of the stripe (equal-sized sections of the associated hard disks to which the data is distributed) for the monitored logical drive.

Write Mode

Specifies the write mode for the logical drive that you can configure as:

  • Write−back - The controller sends a signal to the server when the data has been written to the controller's cache.
  • Write−through - The controller sends a signal to the server only when the data has been written to the drive.
  • Adaptive - When a charged battery is connected, this configuration operates as described under Write−back. If a charged battery is not connected, the controller behaves similarly to the Write−through option.
  • Adaptive write−back - This display appears when you select Adaptiveand the controller currently handles the write requests as described under Write−back. After a battery failure, the controller automatically switches to Write−through.
  • Adaptive write−through - This display appears when Adaptive is selected and the controller currently handles the write requests as described under Write−through. When a charged battery becomes available again, the controller automatically switches back to Write−back.

Read Mode

Specifies the read mode for the logical drive which can be configured as one of the following:

  • Read-ahead - Uses advance read-access to the memory.
  • No read−ahead - No advance read-access to the memory is used.
  • Adaptive - When most of the last read-accesses to successive sectors have taken place, the controller switches to Read−ahead mode. When the read-accesses have been distributed, it switches back to No read−ahead mode.

Cache Mode

Specifies whether Read and Write operations are forwarded directly or are buffered in the cache.

Disk Cache Mode

Specifies the current status of the disk cache mode.