Administrator Guide

Department Security Style Snapshots Replication NDMP
Backup
Number of
SMB/NFS
Clients
Read/Write
Mix
Hourly
Change % of
Existing Data
Broadcast Mixed No No Weekly 10 90/10 None
Press NTFS Daily No No 5 10/90 5%
Marketing NTFS Daily Yes No 5 50/50 None
An average read/write mix is 20/80. An average hourly change rate for existing data is less than 1%.
Example 1
Create NAS volumes based on departments. The administrator breaks up storage and management into functional groups. In this
example, the departmental requirements are dierent and support the design to create NAS volumes along department lines.
• Advantages:
– The NAS volumes are easier to manage because they are set up logically.
– The NAS volumes are created to match the exact needs of the department.
• Disadvantage: The NAS volumes become harder to manage if the number of departments in the organization increases.
Example 2
Group departments that have similar security requirements into NAS volumes. The administrator creates three NAS volumes: one for
UNIX, one for NTFS, and another for mixed.
• Advantage: The NAS volumes work separately between Windows and Linux.
• Disadvantage: Unwanted services could be provided to certain departments. For example, when the SMB volume is backed up
weekly for the administration and nance departments, the press and marketing departments also get backups even though
they do not require it.
Example 3
NAS volumes can be created based on the feature (snapshots, replication, NDMP backup, and so on).
• Advantage: 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). The amount of unreserved space for a NAS volume is: (NAS volume size) – (NAS volume
reserved space).
Unused space Storage space that is physically currently available for the NAS volume. The amount of available
space for a NAS volume is: (unused NAS volume reserved space) + (NAS volume unreserved
space.
FluidFS NAS Volumes, Shares, and Exports
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