Administrator Guide

Example 3
NAS volumes can be created based on a feature (snapshots, replication, NDMP backup, and so on).
• Advantages – The NAS volumes are created to match the exact needs for each feature.
• Disadvantage – User mapping is required. A user needs to choose one security style (either NTFS or UNIX) and then, based on
the security style chosen, the correct mapping for other users is set.
NAS Volumes Storage Space Terminology
Storage Manager displays storage space details for individual NAS volumes and for all NAS volumes collectively. The following table
denes terminology used in
Storage Manager related to NAS volume storage space.
Term Description
Size Maximum size of a NAS volume dened by the storage administrator
Used space Storage space occupied by writes to the NAS volume (user data and snapshots)
Reserved space A portion of a thin-provisioned NAS volume that is dedicated to the NAS volume (no other volumes
can take the space). The amount of reserved space is specied by the storage administrator.
Reserved space is used before unreserved space.
Unreserved space A portion of a thin-provisioned NAS volume that is not reserved (other volumes can take the
space). To calculate the amount of unreserved space for a NAS volume, use: (NAS volume size) –
(NAS volume reserved space)
Unused space Storage space that is physically currently available for the NAS volume. To calculate the amount of
available space for a NAS volume, use: (unused NAS volume reserved space) + (NAS volume
unreserved space
Overcommitted space Storage space allotted to a thin-provisioned volume over and above the actually available physical
capacity of the NAS pool. To calculate the amount of overcommitted space for a NAS volume, use:
(Total volume space) – (NAS pool capacity)
With thin provisioning, storage space is consumed only when data is physically written to the NAS
volume, not when the NAS volume is initially allocated. More storage space can be allocated to the
NAS volumes than has been allocated in the NAS pool itself.
Snapshot space Storage space occupied by snapshots of a NAS volume
Data reduction saving Storage space reclaimed as a result of data reduction processing
Managing the Storage Prole for a NAS Cluster or Pool
Storage Center Storage Proles control how Storage Center manages volume data. The selected Storage Prole dictates which
storage tier accepts initial writes, as well as how data progression moves pages between storage tiers to balance performance and
cost.
For more information about Storage Proles, see the Storage Manager Administrator’s Guide.
View the Storage Prole for the NAS Cluster or Pool
View the Storage Center Storage Proles congured for the NAS cluster or pool. A unique Storage Prole can be congured for
each Storage Center that provides storage for the FluidFS cluster.
In the Storage view, select a FluidFS cluster.
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FluidFS NAS Volumes, Shares, and Exports