EMC Symmetrix Disk Group Performance

Table: EMC Symmetrix Disk Group Performance

Metric	Description
Percent Busy	The % of time that the disk group is busy serving I/O requests.
Total SCSI Commands	The total number of commands performed by the disk group each second: read, write, skip mask, verify, XOR write, and XOR write-read.
Disk Reads	The number of reads per second for the disk group.
Disk Writes	The number of writes per second for the disk group.
MB Read	The read throughput of the disk group, in MB per second.
MB Written	The write throughput of the disk group, in MB per second.
Read Response Time	The average time taken by the disk group to serve one read command.
Write Response Time	The average time taken by the disk group to serve one write command.
MBs	The total number of MB per second for the disk group.
IOs	The total number of read and write I/Os per second for the disk group.
Total Capacity	Total capacity of all the disks in the disk group.
Used Capacity	Total capacity allocated from all the disks in the disk group.