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41
P
erFormance
m
onitoring
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 specific 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
•
Write Regs
•
Read Regs
Promise Technology
Product Manual