Monitoring I/O and hardware performance with Performance Monitor

The Performance Monitor software provides detailed information on I/O activity and hardware performance.

Storage system usage and performance data that is collected and displayed by Performance Monitor enables you to:

• Identify the optimum timing for performing Universal Replicator copy operations.

• Determine the best locations for the Universal Replicator S-VOLs (for example, parity groups with less frequently accessed volumes to avoid bottlenecks of back-end activity).

• Monitor system performance during Universal Replicator operations and during testing activities.

Use the following procedure to lessen the impact on Universal Replicator operations while Performance Monitor is collecting data for one or more storage systems on the same internal LAN:

1. If Performance Monitor is collecting high amounts of LDEV data, disabling this activity, if possible, for one or more systems.

2. If Performance Monitor is collecting data for more than three storage systems on the internal LAN, disconnect Performance Monitor, if possible, from one or more systems before using Universal Replicator.

3. After you have disabled LDEV data collection and/or disconnected Performance Monitor wherever possible, then connect to the system using Device Manager - Storage Navigator and launch Universal Replicator.

4. When Universal Replicator operations are completed, exit Universal Replicator and Device Manager - Storage Navigator.

5. Re-enable Performance Monitor data collection.

For further information on Performance Monitor, see the Performance Guide for your storage system.