You create and manage your aggregates so that they can provide storage to their associated volumes.
Creating an aggregate using unpartitioned drives
You create an aggregate to provide storage to one or more FlexVol volumes and Infinite Volumes. Aggregates are a physical storage object; they are associated with a specific node in the cluster.
Creating an aggregate using root-data partitioning
Typically, root aggregates are created in the factory, and data aggregates are created during initial system setup. However, if you need to create a new data aggregate using partitioned drives, there are some differences in the procedure from creating an aggregate using physical, unpartitioned drives.
Increasing the size of an aggregate that uses root-data partitioning
When you add storage to an existing aggregate that is using partitioned drives, you should be aware of whether you are adding a partitioned drive or an unpartitioned drive, and the tradeoffs of mixing those types of drives in the same RAID group versus creating a new RAID group.
Correcting misaligned spare partitions
When you add partitioned disks to an aggregate, you must leave a disk with both the root and data partition available as spare for every node. If you do not and your node experiences a disruption, Data ONTAP might not be able to create a core file.
What happens when you add storage to an aggregate
By default, Data ONTAP adds new drives or array LUNs to the most recently created RAID group until it reaches its maximum size. Then Data ONTAP creates a new RAID group. Alternatively, you can specify a RAID group that you want to add storage to.
Creating a Flash Pool aggregate using physical SSDs
You create a Flash Pool aggregate by enabling the feature on an existing aggregate composed of HDD RAID groups, and then adding one or more SSD RAID groups to that aggregate. This results in two sets of RAID groups for that aggregate: SSD RAID groups (the SSD cache) and HDD RAID groups.
Determining Flash Pool candidacy and optimal cache size Before converting an existing aggregate to a Flash Pool aggregate, you can determine whether the aggregate is I/O bound, and what would be the best Flash Pool cache size for your workload and budget. You can also check whether the cache of an existing Flash Pool aggregate is sized correctly.
Assigning aggregates to SVMs
If you assign one or more aggregates to a Storage Virtual Machine (SVM, formerly known as Vserver), then you can use only those aggregates to contain volumes for that SVM. Assigning aggregates to your SVMs is particularly important in a multi-tenancy environment or when you use Infinite Volumes.
Methods to create space in an aggregate
If an aggregate runs out of free space, various problems can result that range from loss of data to disabling a volume's guarantee. There are multiple ways to make more space in an aggregate.
Determining which volumes reside on an aggregate
You might need to determine which FlexVol volumes or Infinite Volume constituents reside on an aggregate before performing operations on the aggregate, such as relocating it or taking it offline.