EMC Symmetrix Disk Performance

Table: EMC Symmetrix Disk Performance

Metric	Description
Percent Busy	The % of time that the disk group is busy serving I/O requests.
Avg Queue Depth	Calculated value: Accumulated queue depth/total SCSI commands per second.
Total SCSI Commands	Total number of commands performed by the disk each second: read, write, skip mask, verify, XOR write, and XOR write-read.
Disk Reads	The number of reads per second for the disk.
Disk Writes	The number of writes per second for the disk.
MB Read	The read throughput of the disk, in MB per second.
MB Written	The write throughput of the disk, in MB per second.
Read Response Time	The average time taken by the disk to serve one read command.
Write Response Time	The average time taken by the disk to serve one write command.
IOs	The total number of read and write I/Os per second for the disk.