About the disk storage model
The NetBackup model for disk storage accommodates all Enterprise Disk Options. That is, it is the model for all disk types except for the BasicDisk type.
The following items describe components of the disk storage model:
An entity that moves data between the primary storage (the NetBackup client) and the storage server. NetBackup media servers function as data movers.
Depending on the disk option, a NetBackup media server also may function as a storage server.
An entity that writes data to and reads data from the disk storage. A storage server is the entity that has a mount on the file system on the storage.
Depending on the NetBackup option, the storage server is one of the following:
A computer that hosts the storage. The computer may be embedded in the storage device.
A storage vendor's host on the Internet that exposes cloud storage to NetBackup. Alternatively, private cloud storage can be hosted within your private network.
A NetBackup media server that hosts storage.
A collection of disk volumes that are administered as an entity. NetBackup aggregates the disk volumes into pools of storage (a disk pool) you can use for backups.
A disk pool is a storage type in NetBackup. When you create a storage unit, you select the disk type and then you select a specific disk pool.