Managing DS8000 Full System HyperSwap
DS8000® Full System HyperSwap® is a full system solution that allows logical units that are mirrored between two IBM® System Storage® DS8000 units to be switched between without an outage, providing a minimal impact high availability solution.
To use DS8000 Full System HyperSwap requires IBM PowerHA® for i Express® Edition be installed, with a valid license key.
- Displaying HyperSwap Status
To display the current HyperSwap Status for the system, use the DSPHYSSTS command. The output from the command indicates the current direction and status of HyperSwap replication. - Perform a Planned HyperSwap
To perform a planned HyperSwap from the primary IBM System Storage unit to the secondary, and start replication in the reverse direction, use the Change HyperSwap Status (CHGHYSSTS) command with the *SWAP option. - Suspend HyperSwap Replication
To suspend HyperSwap replication for the system, use the Change HyperSwap Status (CHGHYSSTS) command with the *STOP option. - Resume HyperSwap Replication
To resume HyperSwap replication that was suspended, use the Change HyperSwap Status (CHGHYSSTS) command with the *START option. - Recovering from an unplanned HyperSwap Failover
In the event of an unplanned HyperSwap failover, the system will automatically switch to use the secondary IBM System Storage device as the primary. When the issue that caused the HyperSwap failover has been resolved, the system indicates that there are two primary IBM System Storage devices. The replication direction is indicated on the Display HyperSwap Status (DSPHYSSTS) command output.
Parent topic: Managing PowerHA