Automated Tape Libraries and Virtual Tape Support › IBM Virtual Tape Server (VTS) › Recommendations and Procedures for IBM VTS with IMPORT/EXPORT

Recommendations and Procedures for IBM VTS with IMPORT/EXPORT

The following usermod must be installed to provide support for the IBM VTS in configurations where the IMPORT/EXPORT feature is used:

• CTSJUCBX—Applies your customized source to CBRUXENT, CBRUXEJC (and optionally CBRUXVNL) to your z/OS linklib.

The following CA 1 system parameters and procedures should also be set:

• ROBSCR=YES—Set in TMOOPTxx member of CTAPOPTN
• WRKFLS=NO—Set in TMOOPTxx member of CTAPOPTN. This causes CA 1 to assign a 1 day retention to all work files.
• If YSVC=YES you must update your security system to give OAM update access to resource YSVCUNCD.

If you are vaulting data sets that are on virtual tapes and they go to different vaults, some changes to to CBRUXEJC and TMEEJECT need to be made. In CBRUXEJC, add logic to compare the DSN (and optionally other data fields) and set different pseudo DSNs for the physical tapes to be created. In TMEEJECT add a destination on the EXPORT control statements for CTSSYNC depending on the pseudo DSN that was set:

EXPORT,vvvvvv,VLT1
EXPORT,vvvvvv,VLT2

The vvvvvv is replaced with the VOLSER to be exported and VLT1 and VLT2 are examples of separate vaults you want physical volumes exported to. These names can be the vault name or any other meaningful destination for your site.

When CTSSYNC is run with these control statements, all tapes with VLT1 are exported together and all tapes with VLT2 are exported onto another tape. This gives you the separation so that you can have exported tapes going to different vaults. If you are going to keep the physical tape off-site until it expires you do not need to add a vault pattern for the pseudo DSNs. To keep them a number of days, have a new vault pattern with the pseudo DSN.

Use the following steps for Vaulting when using the IMPORT/EXPORT feature:

1. Run TMEACTVL to build control statements for TMSUPDTE to expire physical tapes when all virtual volumes stacked upon them have been imported or scratched.
2. Run TMSUPDTE with the control statements from TMEACTVL. The volumes are changed to "scratch" status the next time TMSCLEAN runs.
3. Run your daily CA 1 job for vaulting (TMSVMEDT, TMSVMVLT, and TMSVMUPD).
4. Run TMEEJECT to build the CTSSYNC control statements to eject the physical tapes in an ATL and export the virtual tapes.
5. Run CTSSYNC to do the ejects or exports.
6. Run TMEIMPRT to build the CTSSYNC control statements to do the IMPORT for the tapes returned from the vault, after they have been received back in the library and are ready to be put back into the VTS
7. Run CTSSYNC using the control statements from TMEIMPRT.