Product Components › CA VM:Tape Files › Checkpoint File

Checkpoint File

CA VM:Tape preserves operational status information in the checkpoint file, VMTAPE RECOVERY. CA VM:Tape saves this information periodically so that it will be available after a CA VM:Tape reinitialization. This is known as checkpointing. Pending mount and allocate requests are not saved, so they must be resubmitted when CA VM:Tape is recycled.

CA VM:Tape checkpoints the following information:

• ARM command settings

  ARM command settings for reduction and the location default ordering

• ARM product information

  Start and halt state of all supported ARM product interfaces

• Device information

  The device’s location, its start/drain state, reserved status, reducibility setting, and facts concerning the volume last mounted

• Real device block information

  The device’s class, type, features, and model

• Location information

  All known ARM locations that were defined before check pointing occurred

• Volume selection

  All scratch volumes that were selected for mount processing until the mount completes

• Autopick status

  Status of the Autopick facility (on or off) for every scratch pool defined to CA VM:Tape.