You create a new Flash Pool aggregate by adding SSDs to an existing 64-bit aggregate composed of HDDs.
Before you begin
- You must have identified a valid 64-bit aggregate composed of HDDs to convert into a Flash Pool aggregate.
- You must have determined write-caching eligibility for the volumes associated with the aggregate, and completed any required steps to resolve eligibility issues.
- You must have determined the SSDs you will be adding, and these SSDs must be owned by the node on which you are creating the Flash Pool aggregate.
- You must have determined the checksum types of both the SSDs you are adding and the HDDs already in the aggregate.
About this task
There are platform- and workload-specific best practices for Flash Pool aggregate SSD tier size and configuration. For information about these best practices, see Technical Report 4070: NetApp Flash Pool Design and Implementation Guide.
- Mark the aggregate as hybrid-enabled by entering the following command: aggr options aggr_name hybrid_enabled true
If this step does not succeed, repeat the steps to determine write-caching eligibility.
- Add the SSDs to the aggregate by using the aggr add command.
You can specify the SSDs by ID or by using the disk_size and ndisks parameters.
You do not need to specify a new RAID group; Data ONTAP automatically puts the SSDs into their own RAID group.
If the HDDs and the SSDs do not have the same checksum type, or if the aggregate is a mixed-checksum aggregate, then you must use the -c parameter to specify the checksum type of the disks you are adding to the aggregate.
After you finish
You must ensure that either automatic aggregate Snapshot copy creation is disabled or that automatic aggregate Snapshot copy deletion is enabled for the Flash Pool aggregate. For information about automatic aggregate Snapshot copy creation and deletion, see the Data ONTAP System Administration Guide for 7-Mode.