eG Monitoring
 

Measures reported by PureDriveTest

The FlashArray consists of solid-state drives (SSDs) for persistent storage of user data. The NVRAM modules of the FlashArray are used as non-volatile write cache. Health and availability of the drives/NVRAM modules are vital for storing user data and performing I/O operations on the FlashArray. Unhealthy, failed, unused or empty drives/NVRAM modules can degrade the overall performance of the FlashArray. This is why, it is important to monitor the health of the drives/NVRAM modules round the clock! This can be achieved using the PureDriveTest test.

This test auto-discovers the drives and NVRAM modules on the target FlashArray, and reports the health status of each drive/NVRAM module. Using this test, administrators can identify unhealthy and failed drives immediately and take remedial actions before end users complain of unavailability of data stored in the FlashArray or data loss.

Outputs of the test : One set of results for each drive/NVRAM module on the target FlashArray being monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
status Indicates the current status of this array controller.   The values reported by this measure and its numeric equivalents are mentioned in the table below:

Measure Value Numeric Value
Failed 0
Unrecognized 1
Identifying 2
Healthy 3
Empty 4
Unused 5
Note:

By default, this measure reports the above-mentioned Measure Values while indicating the current status of the drive. However, in the graph of this measure, drive states will be represented using the corresponding numeric equivalents only - i.e., 0 to 5.

The detailed diagnosis of this measure reveals the total capacity of the drive, the time stamp at which the drive failed and the time stamp at which the last evaluation was completed.