Attribute
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Definition
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% Drive Utilization (30 Days)
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Percentage of time the drive was occupied. Does not include time the drive was not available because of application reservation or library positioning.
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Drive Dismounts (30 Days)
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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”.
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Drive SNMP Trap Count (30 Days)
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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”.
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Drive Errors (30 Days)
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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”.
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Cleans (30 Days)
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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”.
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MB Read (30 Days)
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Total megabytes read by the drive.
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MB Write (30 Days)
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Total megabytes written by the drive.
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MB R/W (30 Days)
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Total megabytes read and written by the drive.
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MB Sent (30 Days)
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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.
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MB Received (30 Days)
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Total megabytes received by the drive from hosts during write operations. This could be compressed or uncompressed megabytes, depending on the host application.
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Mount Read MB/sec (30 Days)
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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.
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Mount Write MB/sec (30 Days)
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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.
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Mount R/W MB/sec (30 Days)
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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.
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Avg Mount Read MB (30 Days)
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Average megabytes read by the drive per mount. Calculated as:
total MB read / total completed exchanges
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Avg Mount Write MB (30 Days)
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Average megabytes written by the drive per mount. Calculated as:
total MB written / total completed exchanges
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Avg Mount R/W MB (30 Days)
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Average megabytes read and written by the drive per mount. Calculated as:
total MB (read + written) / total completed exchanges
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