Pure Array Capacity Test

Adequate space should be available in the FlashArray to ensure uninterrupted functioning of the mission-critical applications that are using the storage services provided by the FlashArray. If the FlashArray is about to run out of space, then, administrators should be intimated of the space crunch well in advance so that, storage space in the FlashArray can be enhanced before service levels start taking a turn for the worse! This test periodically checks the space usage in the FlashArray and proactively alerts administrators to potential storage space contentions so that, amends are made before application performance deteriorates.

Target of the test : Pure Storage FlashArray

Agent deploying the test : A remote agent

Outputs of the test : One set of results for the FlashArray being monitored.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The IP address of the host for which this test is to be configured.

Port

The port at which the device listens. By default, this will be NULL.

API Token

The eG agent collects the required metrics from the Pure Storage FlashArray by executing API commands using Pure Storage REST API on the FlashArray and pulls out critical metrics. In order to collect metrics, the eG agent should be provided with a valid API token. To know how to determine the API token, refer to Pre-requisites for Monitoring the Pure Storage FlashArray. Specify the determined API token in the API Token text box.

DD Frequency

Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 2:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD frequency.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise suite embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Total capacity

Indicates the total storage space available in the FlashArray.

TB

The detailed diagnosis of this measure reveals the details about data reductions on the array.

Used capacity

Indicates the amount of storage space that is currently in use on the FlashArray.

TB

Ideally, the value of this measure should be low. If this value grows closer to that of the Total capacity measure, then administrators may want to consider adding more storage to the FlashArray, or freeing space in the FlashArray by deleting unnecessary data.

Free capacity

Indicates the amount of storage space that is available for use on the FlashArray.

TB

A high value is typically desired for this measure. A very low value for this measure indicates a shortage of storage space on the FlashArray.

Capacity used

Indicates the percentage of storage space utilized on the FlashArray.

Percent

 

Capacity free

Indicates the percentage of storage space available for use on the FlashArray.

Percent

Ideally, the value of this measure is desired to be high.

Volume

Indicates the amount of storage space allocated for volumes.

TB

Typically, volumes are used to store non-shared data in the FlashArray. This measure shows the size of non-shared data on the FlashArray.

Snapshot

Indicates the amount of storage space allocated for volume snapshots.

TB

Snapshots are typically used for quick recovery and offloading backup operations. If the FlashArray appears to be running out of space, then, the value of this measure will indicate if the snapshots have in any way contributed to the space crunch.

Shared

Indicates the amount of storage space allocated for shared (deduplicated) data.

TB

 

System

Indicates the amount of storage space utilized by RAID-3D parity and other metadata

TB