Utility Reference › OS TMC Utility › VMTSPLIT Utility › Preparing to Run VMTSPLIT

Preparing to Run VMTSPLIT

Follow these steps before using the VMTSPLIT Utility:

1. Ensure the requirements listed above have been met.
2. Log on to the CA VM:Tape server and END CA VM:Tape.

   Note: It is assumed you will run the VMTSPLIT Utility, then reconfigure your CA VM:Tape server to run with the shared CA 1 TMC created from the CA 1 TMSMERGE Utility. For more information about setting up and sharing a z/OS CA 1 TMC, see the Sharing the CA 1 TMC.

3. If necessary, run the CA VM:Tape VMTBUILD Utility to create the TMC to be used as input to the VMTSPLIT Utility.
4. Issue a CMS FILEDEF command for the WORK dataset. The WORK dataset is a temporary dataset that will be deleted when VMTSPLIT completes. The FILEDEF can be directed either to DISK or TAPE, for example:

   FILEDEF WORK DISK WORK FILE T
   

   or

   FILEDEF WORK TAP1 SL
   

5. Issue a CMS FILEDEF command for the EXPORT dataset. The EXPORT dataset is the output that will be passed along to be used for input to the CA 1 TMSMERGE Utility on z/OS. The FILEDEF can be directed either to DISK or TAPE, for example:

   FILEDEF EXPORT DISK EXPORT FILE T
   

   or

   FILEDEF EXPORT TAP2 SL
   

   If either the WORK or EXPORT datasets are being directed to tape, issue the CMS SET TVICALL OFF command. This will ensure that when the datasets are opened CA VM:Tape is not called for tape allocation and mount processing, because in step 2 above you brought CA VM:Tape down. However, before you run the VMTSPLIT Utility, you will need to manually allocate any needed tape drives and mount the appropriate scratch tapes in R/W mode.