How to use FlexShare

You use FlexShare to assign priorities to volume data access, set the volume buffer cache policy, and modify the default priority.

• Assigning priority to a volume relative to other volumes
  You can use FlexShare to assign a relative priority to a volume to cause accesses to that volume to receive a priority that is higher or lower than that of other volumes on your storage system.
• Assigning priority to system operations relative to user operations
  If system operations (for example, SnapMirror transfers or ndmpcopy operations) are negatively affecting the performance of user accesses to the storage system, you can use FlexShare to assign the priority of system operations to be lower than that of user operations for any volume.
• FlexShare and the buffer cache policy values
  You can use FlexShare to give Data ONTAP a hint about how to manage the buffer cache for that volume.
• Setting the volume buffer cache policy
  You can use FlexShare to influence how Data ONTAP determines when to reuse buffers.
• Removing FlexShare priority from a volume
  You can temporarily disable the FlexShare priority for a particular volume, or you can remove the priority completely.
• Modifying the default priority
  If you have not assigned a priority to a volume, then that volume is given the default priority for your storage system. The default value for the default priority is Medium. You can change the value of the default priority.