You should monitor the TrueCopy system frequently to keep track of and maintain the copy pairs.
The following are a couple of examples of when you would check the status of a pair:
- Check the status before performing a pair operation. Each operation requires a specific status or set of statuses.
- Check status to see that pairs are operating correctly and that data is updated from P-VOLs to S-VOLs in PAIR status, or that differential data management is performed in Split status. Pair status changes when an operation is performed.
You can check the TC pair status by using CCI. Monitoring should be repeated frequently.
To perform this task in CCI, use the pairdisplay command or the pairevtwait command.