Dell PowerVault NX3500 - Manual (Page 91)

various data access patterns. The security style can also be set to Mixed which supports both POSIX
security and Windows ACLs on the same NAS volume.
• Quotas: Different quota policies can be applied to different NAS volumes, allowing the administrator
to focus on managing quotas when it is appropriate.
Example NAS Volume Creation Scenarios
The following scenarios provide examples of how NAS volumes can be created to meet the needs of an
example organization with the following conditions:
1. The average read/write mix is 80/20 and the average hourly change rate for existing data is less than
1%.
2. The departments and NAS volume requirements are as described in the following table:
Department Securit
y Style
Snapsho
ts
Replicatio
n
NDMP
Backup
Number
of
CIFS/NF
S
Clients
Read/
Write Mix
Hourly
Change % of
Existing Data
Post Production NFS Hourly No Weekly 20 20/80 1%
Administration
and Finance
CIFS No No Weekly 10 50/50 None
Broadcast Mixed No No Weekly 10 90/10 None
Press CIFS Daily No No 5 10/90 5%
Marketing CIFS Daily Yes No 5 50/50 None
Scenario 1
Create NAS volumes based on departments. The administrator logically breaks up storage and
management into functional groups. In this scenario, the departmental requirements are quite different
and support the design to logically create NAS volumes along department lines.
• Advantages:
– It is logically easy to manage the NAS volumes.
– The NAS volumes are created to match the exact needs of the department.
• Disadvantage: The NAS volumes become difficult to manage if the number of departments in the
organization increases.
Scenario 2
We recommend grouping departments that have similar security requirements into NAS volumes. The
administrator creates three NAS volumes: one for NFS, one for CIFS, and another for mixed.
• Advantage: The NAS volumes work separately between Windows and Linux.
• Disadvantage: Unwanted services may be provided to certain departments. For example, if the CIFS
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 it.
Scenario 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.
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