A pool disk is a portion of an Exadata storage device that is designated for use by Exascale. A pool disk is created by allocating space from an Exadata cell disk.

To create pool disks, use the CellCLI CREATE GRIDDISK command and specify the name of the storage pool that you want to associate with the newly created pool disks.

For example:

CellCLI> create griddisk all harddisk prefix=pool1, storagepool=POOL1

You must specify the storagepool attribute to create Exascale pool disks. Otherwise, you will create Exadata grid disks, which Exascale cannot use.

When you specify the storagepool attribute, the Exadata grid disks are marked as Exascale pool disks, and the storage pool name is written into the pool disk metadata.

The create griddisk command does not immediately add the pool disks to the specified storage pool, and at this point, the storage pool does not need to exist. The pool disks are only available for data storage after they are included in the storage pool, either during storage pool creation or after the storage pool is modified by using the chstoragepool command with the --reconfig option.