Attribute

Definition

% Drive Utilization (30 Days)

Percentage of time the drive was occupied. Does not include time the drive was not available because of application reservation or library positioning.

Drive Dismounts (30 Days)

Total number of times media have been unloaded from this drive.

Note – This field links to the Libraries – Exchanges screen, list view, which lists this drive’s exchanges. See “Exchanges Screen”.

Drive SNMP Trap Count (30 Days)

Total drive notifications received from the library over the last 30 days. A sudden increase in this number indicates a condition that should be investigated.

Note – This field links to the Notifications – Overview screen, list view, which lists SNMP traps for this drive. See “SNMP Notifications Screen”.

Drive Errors (30 Days)

Total drive errors recorded.

Note – This field links to the Libraries – Exchanges screen, list view, which lists this drive’s exchanges with errors. See “Exchanges Screen”.

Cleans (30 Days)

Total cleaning operations performed.

Note – This field links to the Drives – Cleaning Activities screen, list view, which lists this drive’s cleaning activities. See “Cleaning Activities Screen”.

MB Read (30 Days)

Total megabytes read by the drive.

MB Write (30 Days)

Total megabytes written by the drive.

MB R/W (30 Days)

Total megabytes read and written by the drive.

MB Sent (30 Days)

Total megabytes sent by the drive to hosts during read operations. This could be compressed or uncompressed megabytes, depending on whether compression has been enabled on the drive.

MB Received (30 Days)

Total megabytes received by the drive from hosts during write operations. This could be compressed or uncompressed megabytes, depending on the host application.

Mount Read MB/sec (30 Days)

Average read rate for the drive, in megabytes per second. Calculated as:

total MB read / total seconds mount time 

Note – This value may be affected by a variety of factors external to the drive, such as robot speed or application behavior—for example, some applications do not dismount media immediately upon completion of read/write operations, causing the drive to be idle for much of the mount. As a result, this value is not likely to represent the drive’s maximum potential read rate.

Mount Write MB/sec (30 Days)

Average write rate for the drive, in megabytes per second. Calculated as:

total MB written / total seconds mount time 

Note – This value may be affected by a variety of factors external to the drive, such as robot speed or application behavior—for example, some applications do not dismount media immediately upon completion of read/write operations, causing the drive to be idle for much of the mount. As a result, this value is not likely to represent the drive’s maximum potential write rate.

Mount R/W MB/sec (30 Days)

Average throughput rate for the drive, in megabytes per second. Calculated as:

total MB (read + written) / total seconds mount time 

Note – This value may be affected by a variety of factors external to the drive, such as robot speed or application behavior—for example, some applications do not dismount media immediately upon completion of read/write operations, causing the drive to be idle for much of the mount. As a result, this value is not likely to represent the drive’s maximum potential throughput rate.

Avg Mount Read MB (30 Days)

Average megabytes read by the drive per mount. Calculated as:

total MB read / total completed exchanges

Avg Mount Write MB (30 Days)

Average megabytes written by the drive per mount. Calculated as:

total MB written / total completed exchanges

Avg Mount R/W MB (30 Days)

Average megabytes read and written by the drive per mount. Calculated as:

total MB (read + written) / total completed exchanges