Storage Pools Test

File system volumes in the EMC VNX storage system can be organized into groups called storage pools. Storage pools are used to allocate available storage to the file systems managed by EMC VNX. Without sufficient space, file systems cannot service I/O requests from users. This is why, the storage pool assigned to a file system has to be frequently checked for space. The Storage Pools test enables this check. This test monitors the usage of space in every storage pool and proactively alerts administrators if the storage space in any pool is about to be used up completely! This way, the test prompts administrators to right-size their storage pools, so that users have no issues accessing their file systems.

Target of the test : An EMC VNX Unified Storage system

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each storage pool in the EMC VNX Unified Storage system.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.


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

Controller Station IP

The Control Station is the management station for the VNX for File system, and enables control and configuration of the system. The eG agent uses the CLI that runs on the Control Station to monitor and manage the performance of the VNX for File system. To enable the eG agent to use this CLI, specify the IP address of the Control Station in the Controller Station IP text box. By default, the IP address of the host will be displayed here.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Used size

Indicates the space that is currently in use in this storage pool.


Ideally, the value of this measure should be low.

Available size

Indicates the amount of unused space in this storage pool.


Ideally, the value of this measure should be high. Compare the value of this measure across storage pools to identify which storage pool is about to run out of space. You may want to add more space to this storage pool by say, adding more disk volumes to the pool.

Total size

Indicates the total capacity of this storage pool.



Potential space

Indicates the amount of available space that can be added to this storage pool.


EMC VNX allows both file systems and storage pools to automatically grow as needed based on administrator-defined high watermarks. This feature is called auto-extend. The auto-extend feature allows you to define an upper limit to the amount of space that can be allocated to a file system or storage pool. This maximum size represents the potential size of the file system/storage pool.