- Record the pair status and fence level of each S-VOL.
- Analyze the consistency of the S-VOLs based on pair status and the P-VOL fence level setting.
See Checking S-VOL consistency with the P-VOL.
For a TCz pair with the fence level set to "never", analyze further to determine whether the S-VOL data consistency is guaranteed. To determine whether the consistency of the S-VOL data is guaranteed, use the sense information that is transferred by host failover software, or compare the contents of the S-VOLs with other files that are confirmed to be consistent (for example, database log files). Restore the S-VOLs using the files that are confirmed to be consistent.
- Perform file recovery as needed.
- Run the YKSUSPND REVERSE command on the S-VOL.
- Complete file recovery procedures.
- Vary the S-VOLs online.
- At the secondary site, start critical host operations with the previous S-VOLs now functioning as the P-VOLs.