NetBackup disk storage unit considerations on Windows
NetBackup permits the creation of an unlimited number of disk storage units.
Table: Disk media descriptions describes the different disk types that NetBackup can use as disk media.
Table: Disk media descriptions
Type of disk storage unit
A BasicDisk type storage unit consists of a directory on a locally-attached disk or a network-attached disk that is exposed as a file system to a NetBackup media server. NetBackup stores backup data in the specified directory.
Notes about the BasicDisk type storage unit:
An AdvancedDisk disk type storage unit is used for a dedicated disk that is directly attached to a NetBackup media server. An AdvancedDisk selection is available only when the Flexible Disk Option is licensed.
NetBackup assumes exclusive ownership of the disk resources that comprise an AdvancedDisk disk pool. If the resources are shared with other users, NetBackup cannot manage disk pool capacity or storage lifecycle policies correctly.
For AdvancedDisk, the NetBackup media servers function as both data movers and storage servers.
See the NetBackup Shared Storage Guide.
A NearStore disk type storage unit is used to store images on Network Attached Storage (NAS) from NetApp. NearStore appears as a selection only when the OpenStorage Disk Option is licensed.
For NearStore, the NetBackup media servers function as the data movers. The NearStore host is the storage server.
NearStore storage units cannot be used as part of a storage unit group or used in a storage lifecycle policy.
Information about configuring NearStore storage units is described in the NetBackup Administrator's Guide, Volume II.
An OpenStorage disk type storage unit is used for disk storage on an intelligent disk appliance or on the Nirvanix Storage Directory Network. The actual name of the disk type depends on the vendor. An OpenStorage selection is available only when the OpenStorage Disk Option is licensed.
The disk appliance is integrated into NetBackup through an API. The storage vendor partners with Symantec to integrate the appliance into NetBackup. The disk appliance is the storage server.
For OpenStorage, the NetBackup media servers function as the data movers. The storage vendor's plug-in must be installed on each media server that functions as a data mover. The logon credentials to the storage server must be configured on each media server.
See the NetBackup Shared Storage Guide.
disk type storage unit is used for deduplicated data for the following storage destinations:
NetBackup deduplicates the data and hosts the storage.
Requires the NetBackup Deduplication Option license key.
See the NetBackup Deduplication Guide.
PureDisk storage pool.
PureDisk hosts the storage. Therefore, a PureDisk environment must be configured.
See the NetBackup PureDisk Getting Started Guide
PureDisk storage pools are exposed to NetBackup through one of the following options:
NetBackup Deduplication Option.
Requires PureDisk 6.6 or later to host the storage.
PureDisk Deduplication Option (PDDO). Requires the PureDisk Storage Option license key.
Requires PureDisk 6.5 or later.
See the NetBackup PureDisk Deduplication Option Guide.
Symantec provides a recommendation about using storage unit groups for deduplication.
PureDisk appears as a selection when the NetBackup Deduplication Option or the PureDisk Storage Option is licensed.
A SnapVault storage unit is used to store images on Network Attached Storage (NAS). The SnapVault selection is available only when the NetBackup Snapshot Client option is licensed.
SnapVault storage units cannot be used in a storage unit group or as part of a staging operation.
For SnapVault, the NetBackup media servers function as the data movers. The SnapVault host is the storage server.
Not all settings are available on each disk storage unit type.
See About storage unit settings on Windows
Symantec recommends that you do not impose quotas on any file systems that NetBackup uses for disk storage units. Some NetBackup features may not work properly when file systems have quotas in place. (For example, the capacity-managed retention selection in lifecycles and staging to storage units.)
See About the NetBackup disk storage model on Windows
See Maintaining available disk space on NetBackup disk storage units on Windows