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!
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.
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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.