I am migrating to an MD3220 and MD1220 which has the SSD cache and high-performance tier feature keys installed and enabled. I have 6 x 200 GB SLC SSD SAS drives and 24 x 900GB SAS HDDs in the MD3220, MD1220.
When I create the SSD Cache, should I assign all 6 SSDs to the cache? For maximum performance is it best to create 1 large RAID-10 disk group then create smaller virtual disks, making sure “Use SSD cache” is enabled?
Thank you very much!
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You will want to put all the SSDs in one cache array. Page 110 http://downloads.dell.com/manuals/common/md32xx_md36xx_administrator%20guide_en%20us.pdf
Unless you have a need to break it up into smaller RAID 10s you can just create one big one.
Thank you very much for the reply. I don't want to make any mistakes like I did the first time I created the array.