Prepare for Disaster Recovery

The following steps should be followed at the designated Disaster Recovery Center (DRC).

To prepare for disaster recovery

Install and customize a new CA Vtape system based on the Production Data Center (PDC) system. Assuming the product libraries, including the parmlib, are copied from the PDC, complete the relevant steps described in Precustomization Planning.
To complete the DRC installation, use the jobs already generated in the PREFIX.SVTJCL and delivered in the HLQ.CCUUJCL data sets copied from the PDC.
Note: The CA Vtape DSN prefix must be the same as the one in use at the PDC.
The DRC BSDS will be recovered from the PDC. You should plan for the required DASD space in a separate DASD volume from the other control data sets, but you do not have to create the BSDS now.
The DASD buffer size may be different from the one being used at the PDC. From PREFIX.SVTJCL, submit the number of LDSDEFxx jobs required to create the DRC DASD buffer.
Define and initialize the Global VCAT by extracting the DELDEFG and UTILITYG steps located in the GLOBAL member in PREFIX.SVTJCL.
Define and initialize the Local VCAT by submitting job DEFVCAT located in HLQ.CCUUJCL.
Verify that the SVTS and SVTSAS JCL procedures are located in your DRC proclib. If not, copy them from the HLQ.CCUUJCL library.
The esoterics defined in PARMLIB/VTGROUP must conform to the ones defined at the DRC. If the resources are available, you should continue generating duplex tapes at the DRC, but it is not required.
Review member VTDRIVE and verify that the virtual UCB addresses conform to the ones defined at the DRC.

Perform the following steps at the PDC:

Ensure the VTGROUP member in the parmlib specifies a valid esoteric in the duplex parameter related with the groups to be recovered at the DRC.
Perform a backup of the product libraries, including the parmlib, the tape management system catalog, the BSDS, and the ICF catalog containing the Externalization entries. Be aware of the following considerations:
- This backup will be your restart point at the DRC, meaning all the scratch volumes created and Virtual Volumes modified after the backup is taken will need to be reprocessed in case of a disaster.
- It is very important to back up the BSDS, tape management, and ICF catalogs at the same time, to keep them in synchronization. You do not have to stop CA Vtape to perform the BSDS backup.
- Schedule this backup to run as often as your business requires. At minimum the backup should be run after all the duplex tapes needed for the disaster recovery are created and as often as your business requires. Keep track of the date and time when the backup started.