Tape Drives Workspace

The Tape Drives workspace provides information about various factors that affect the performance and availability of the tape drives on your system.  

Two bar charts, Tape Errors and I/O Counts, visually illustrate factors affecting performance of specific devices charted by device address. If the number of tape errors for a device is high, the device may need to be cleaned or adjusted, or the tape may be bad.

The Tape Drive Overview thermometer chart illustrates the total number of devices in each of the conditions shown: DDR Swaps in Progress, Dropped Ready, Not Responding. The thermometer chart also shows the total number of Tape Mounts Pending on your system.

A Dropped Ready condition may indicate power supply or other hardware problems, or that the switch may have been turned off at the device.  

Dynamic Device Reconfiguration (DDR) permits tapes to be remounted on another drive without ABENDing a running job. Unless acted upon promptly, performing a DDR swap can create severe system I/O performance degradation.

This workspace can record history.  

See also:

Organization of system-level predefined workspaces
Attribute groups used by system-level predefined workspaces