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Chapter 6 Managing the File System
Working With Affinities
StorNext User’s Guide 121
Working With Affinities
An affinity is a label assigned to one or more stripe groups. An affinity
enables you to direct data to its associated stripe groups. A file system
can have one or more affinities associated with it. These associations,
defined in stripe groups, are made with the affinity key to a directory or
file.
For example, if you create a directory association with Affinity aff1, all
data written to that directory is written to StripeGroup StripeGroup2, and
therefore only to disk2.
If you make an association with Affinity aff2 and a separate directory in
the file system, all data is directed to StripeGroup StripeGroup3, which
contains three disks: disk3, disk4, and disk5. All data is written to these
disks when directed to the associated directory with Affinity aff2.
This section includes the following topics:
• Adding an Affinity
• Adding an Affinity Through SNFS
• Setting the Affinity in a Directory
• Modifying an Affinity
• Deleting an Affinity
• File System Configuration Restrictions
Adding an Affinity 6
Use the following procedure to add an affinity to a configured file
system.
1 From the StorNext home page, select Add Affinity from the Config
menu. The Add Affinity Introduction screen appears, showing a list
of existing configured file systems to which you can add an affinity.