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# Change Storage Resource Pools for storage groups

Storage groups are a collection of devices that are stored on the storage system. An application, a server, or a collection of servers use them.

## About this task

This procedure explains how to change the Storage Resource Pool of a parent storage group, with child service levels using different Storage Resource Pools.

In eNAS environments, you can also perform this operation from the File Storage Groups page (System > System Dashboard > File Dashboard > File Storage Groups).

To change the Storage Resource Pool for storage groups:

## Steps

1. Select the storage system.
2. Select Storage > Storage Groups, and then select the storage group, click , and click Change SRP.
3. Select the new SRP.
4. Optional: Change the Service Level for the storage group. Service levels specify the characteristics of the provisioned storage, including maximum response time, workload type, and priority. This field defaults to None if you set the Storage Resource Pool to None. Possible values are:

   Table 1. Service levels
   Service level | Performance type | Use case
   --- | --- | ---
   Diamond (Default) | Ultra high | HPC, latency sensitive
   Platinum | Very high | Mission critical, high rate OLTP
   Gold | High | Very heavy I/O, database logs, datasets
   Silver | Price/Performance | Database datasets, virtual applications
   Bronze | Cost optimized | Backup, archive, file
   Optimized | Optimized | Places the most active data on the highest performing storage and the least active on the most cost-effective storage

5. Optional: Refine the service level by selecting the Workload Type to assign it. (This step is applicable only for storage systems running HYPERMAX OS 5977.)
6. Do one of the following:
   - Click Run Now to perform the operation now.
   - Expand Run Now and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs.