Chapter 6 Managing the File System

Working With Affinities

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

 

Use the following procedure to add an affinity to a configured file

Adding an Affinity

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.

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Quantum 6-01658-05 manual Working With Affinities, Adding an Affinity

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