Measures reported by VNXeSysCapaTest

When automatic disk configuration is enabled in the EMC VNXe storage system, the system allocates existing disks into a capacity, and/or performance and/or extreme performance pool, depending on the number and type of available disks. SAS disks are allocated in multiples of either 6 or 7 and these disks are collectively termed as disk groups. A spare disk may be assigned for the first 0 to 30 disks and occasionally, one disk will be left unassigned. In larger environments, the spare disks and unassigned disks may vary depending on the total number of disks. If the capacity of the disks in a disk group is full or if a disk in the disk group fails, the spare disk would be used from the disk group. If the spare disks and unassigned disks are used completely, then the disk group may be insufficient to store further data leading to data loss. Therefore, it is necessary to monitor the capacity of the disks in the disk groups and the number of spare disks and unassigned disks in each disk group. The VNXeSysCapaTest test helps administrators in this regard!

This test auto-discovers the disk groups in the target storage system and for each disk group, this test reports the total capacity and the number of drives, spare disks and the unassigned disks.

Outputs of the test : One set of results for each Disk Group of the target storage system being monitored.

The measures made by this test are as follows: