NetApp
Storage > Array LUNs : Configuring array LUNs : Creating an aggregate from spare array LUNs

Creating an aggregate from spare array LUNs
You can use the Create Aggregate dialog box to create a new aggregate from selected spare array LUNs. You must first change the ownership of an array LUN to spare, making the array LUN available for use.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Storage > Array LUNs.
3.
Select one or more spare array LUNs and click Create Aggregate.
Note: For aggregates for third-party storage, you cannot have array LUNs from storage arrays from different vendors in the same aggregate.
4.
Specify a name for the aggregate and click Create.