Automating FDDRL saves

Through automatic recognition of volumes, FDDRL saves can be performed such that the operator no longer has to respond to mount messages. Instead, an informative message is simply output on the console and processing is resumed.

With disks the following steps must be taken:

• Mount the disks before your request

• Specify the VSN of the output disks in the OVERWRITE-DISK operand of the COPY-DISK, COPY-PUBSET or RELOAD-DISK, RELOAD-PUBSET statement. (The user must specify the VSN of the input disk anyway.)

With MTC devices the following steps must be taken:

• In the case of MTC devices with an automatic mounting aid, either a MAREN scratch pool must be available and TAPE=*ANY be specified for the output tapes or the VSNs must be specified explicitly in the TAPE operand.

• In the case of MTC devices without an automatic mounting aid, the tapes/cartridges must have been mounted beforehand, and their VSNs must be specified in the TAPE operand.

Before MTC devices are assigned, they are reserved using a /SECURE-RESOURCE-ALLOCATION command. You can control the wait time for reservation using the FDDRL parameter SECURE-WAIT-TIME.
Specifying a wait time of more than 3 minutes prevents an operator dialog. A wait time which is sufficiently long provides the opportunity for a MTC device to be freed up in the meantime, thereby preventing the FDDRL job from being aborted due to no free MTC device being available.