System Programmer Reference › Utilities › VMBRITS Utility › Considerations for Using VMBRITS

Considerations for Using VMBRITS

• You cannot use VMBRITS to restore data that was backed up in physical or CMSALLOC format. If VMBRITS finds a minidisk on the tape in one of these formats, the utility issues an error message and moves on to the next minidisk.
• You cannot use VMBRITS to restore SFS data. This includes SFS data that CA VM:Backup backs up for CA VM:Archiver.
• VMBRITS requires the READLREC MODULE file. This file is located on the CA VM:Backup 192 minidisk and is loaded during installation with the VMBRITS code.
• VMBRITS does not restore from tapes that were created with encryption. If any of the data on a tape is encrypted, VMBRITS stops processing when it encounters the encrypted minidisk.
• If a file being restored by VMBRITS already exists on the minidisk to which it is being restored, VMBRITS does not overwrite the existing file. VMBRITS issues an error message and moves on to the next file.
• If the tape that VMBRITS is searching contains multiple data sets, VMBRITS searches all data sets on the tape for the specified minidisks. Also, if the tape that VMBRITS is searching belongs to a CA VM:Backup tape stream or to a CA VM:Archiver tape set containing multiple tapes, the utility indicates the volser of the next tape in the tape stream or tape set (if tape chaining was enabled for that backup or MPC job). VMBRITS correctly scans a data set that spans two or more tapes if the tapes are mounted in sequence. VMBRITS stops searching when it finds the first occurrence of the specified minidisk with user records if specified, or when it finds the end-of-tape marker when searching for the next data set on the tape.
• If a target minidisk becomes full while VMBRITS is restoring data to it, VMBRITS stops restoring data to this minidisk, issues an error message, and proceeds to the next minidisk to be restored. The full target minidisk is only partially restored. After either clearing some space on this minidisk or specifying a different target minidisk, run VMBRITS for the source minidisk again.
• If VMBRITS encounters a partial backup of a minidisk (as indicated by a CAN1 record on the tape), VMBRITS issues this message:

  0018I	CANCELLATION RECORD FOUND FOR userid vaddr; THIS IS
  	       NOT THE VALID BACKUP COPY OF THIS MINIDISK.
  

  If you are restoring from a CMS format backup and VMBRITS encounters a CAN1 record, the minidisk being restored may be left in an unfinished state.