Advanced

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Use the Advanced page to manage cleaning cartridges, manage accessor behavior in a dual-accessor library, and enable/disable REST over SCSI for the library.

Move expired cleaning cartridges to I/O station
If this option is checked, cleaning cartridges are automatically moved to an I/O station when they expire after 50 uses.
Elastic Capacity (TS4500)
In dual-accessor libraries, this option allows cartridges to be stored in accessor service areas during periods of peak activity. It may be necessary to disable this option temporarily if there is a service issue with one of the accessors, usually under the direction of IBM support.

Cartridges are moved to service areas when the number of cartridges in the non-service area exceeds the utilization threshold, set by default to 98%. Use the setUtilThreshold CLI command to change the utilization threshold setting and the viewUtilThreshold command to view the current setting.

The elastic capacity options are:

  • Use for maximum capacity – The least recently used cartridges are moved to an accessor service area when the non-service area exceeds the utilization threshold.
  • Use for temporary overflow – I/O station cartridges are imported to an accessor service area when the non-service area exceeds the utilization threshold.
  • Do not use – Cartridges are never moved to an accessor service area.
Active accessor (TS4500)
Allows you to activate and inactivate accessors. You can also activate and inactivate accessors using the setAccessorZones CLI command.
Accessor preferred zone (TS4500)

This read-only graphic displays an indicator for each frame and shows the preferred zone (tape drives and I/O stations) for each accessor, including the accessor service areas if Elastic Capacity is enabled.

You can restrict accessor zones to specific frames with the setAccessorZones CLI command. The viewAccessorZones command displays the current zone setting for each accessor.

REST over SCSI

REST over SCSI (RoS) allows library administrators to obtain status information about library components by sending REST API commands and receiving HTTP responses using SCSI Write Buffer and Read Buffer commands, respectively. If enabled (the default setting), the library will accept and respond to commands. If disabled, commands are rejected.