 
Setting the Storage Pool Stripe Breadth
Xsan uses both the storage pool stripe breadth and the volume block allocation size 
to decide how to write data to a volume. For most SANs, the default values for storage 
pool stripe breadth and volume block allocation size result in good performance. 
However, in some cases you might be able to improve read and write performance by 
adjusting these values to suit a specific application.
The stripe breadth must be set when the volume is created; it can’t be changed for an 
existing volume.
To set a storage pool’s stripe breadth:
Click the Settings button below the Affinity Tag list on the Configure Volume Affinities 
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pane of the setup assistant when you create the volume.