19 Replies Latest reply: Nov 5, 2012 7:43 AM by stevew RSS

Questions about aggregates and setup

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Currently I have a FAS 3170 in active/active configuration.  4 trays of disks, each tray has 14 disks that make up a RAID-DP group.  Therefore there are a total of 4 raid groups.  2 trays of disks have been assigned to each controller.  Each of the controllers disks have been combined into an Aggregate, making a total of 2 aggregates in the array consisting of 28 disks per aggregate.  Each aggregate contains 3 volumes for a total of 6 volumes in the array.


What I would like to achieve here is to combine all 56 disks (the 4 raid groups/trays) into a single aggregate.  The aim of this is to improve read/write performance of the array by essentially doulbing the number of spindles available for io operations.


The array is soon to be taken out of production and available for a teardown/rebuild so it would be good to know if this setup is:

a) worthwhile doing

b) actually technically possible and if so, the best way to do this

c) a supported and/or recommended practice by NetApp (this isn't a big thing but good to know regardless)


Some other information that may be of use:

- The array is used only for VM's in a VMware environment.

- Each controller has 2 physical nics.

- Current disk io is very low and usually 60-70% read, 70-80% random.


Any feedback on the above would be great, thanks!

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