Administrator Guide

Department Security
Style
Snapshots Replication NDMP
Backup
Number of
SMB/NFS
Clients
Read/Write
Mix
Hourly
Change % of
Existing
Data
Administration
and Finance
NTFS No No Weekly 10 50/50 None
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 percent.
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 different 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 one for mixed.
● Advantages – 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 finance departments, the press and marketing departments also get backups
even though they do not require them.
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 defines terminology used in Storage Manager related to NAS volume storage space.
Term
Description
Size Maximum size of a NAS volume defined 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 specified 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)
FluidFS Administration 397