Promise Technology Vess A3340 - P Erformance M Onitoring

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Vess A Class NVR Storage Appliance Promise Technology
PerFormance monItorIng
The Performance Monitor displays real-time performance statistics for logical drives and physical drives. The
vertical scale adjusts dynamically to accommodate the statistical data.
Because it reports performance in real-time, to see data in the monitor, there must be I/O data activity taking
place between the subsystem and the Host.
To monitor performance:
1. Click the Administrative Tools icon.
2. Click the Performance Monitoring icon.
3. Click the Information tab for aggregated statistics; or choose the Read/Write tab to view specic Read
and Write performances separately.
4. Under Logical Drive, choose the metric you want to see from the Measurement drop-down menu.
5. Check the boxes for the logical drives you want to see.
• Total of all logical drives
• Up to 4 devices
Information
• Bandwidth in MB/s
• Cache usage by %
• Dirty cache usage by %
• Maximum latency in ms
• Average latency in ms
• Minimum latency in ms
• I/Os per second
Read/Write
• Read bandwidth
• Write bandwidth
• Maximum Read latency in ms
• Maximum Write latency in ms
• Average Read latency in ms
• Average Write latency in ms
• Minimum Read latency in ms
• Minimum Write latency in ms