eG Monitoring
 

Measures reported by HPEvaDiskTest

This test monitors the level of I/O activity on each physical disk on an EVA storage array, and helps isolate irregularities in load balancing across the disks. Alongside, the test also helps identify which disk is experiencing I/O bottlenecks (if any).

 The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Read_requests Indicates the rate at which read requests were made to this physical disk. Reqs/Sec The detailed diagnosis of this measure reveals the enclosure number and disk group to which this disk belongs.
Write_requests Indicates the rate at which write requests were received by this physical disk. Reqs/Sec  
Data_reads Indicates the rate at which data is read from disk. MB/Sec  
Data_writes Indicates rate at which data is written to this disk. MB/Sec  
Read_latency Indicates the time taken for reading from this disk. Ms Ideally, this value should be low. A high value could indicate an I/O bottleneck on the disk
Write_latency Indicates the time taken for writing to this disk. Ms
Avg_queue_size Indicates the number of requests to this disk that are in queue. Number A high value of this measure or a consistent increase in measure value could indicate the existence of an I/O bottleneck on the disk.