MC_jeffhoward001 wrote:
I understand that NetApp is very proud of their De-Dup engine that justify the cost increase by the cost saving in deduplication, but aren't you still cutting your raw IOPs in half? Meaning, if you can jam 50% more data into the same disks using de-dup onto 12x spindles, aren't you basically getting 50% LESS raw IOPs when compared to a solution without de-dup that uses 24x spindles?
I've not used Dell storage, but have had a good history with NetApp 31xx/32xx FAS units.
I wouldn't say 50% ... It depends on if you are using Flash Cache and if the block is already in the buffer cache. Deduplicated reads are great, as you don't have to go to disk for common, deduplicated blocks. Writes, however, are penalized by having less shelves minus the read overhead that is alleviated by the technologies I've mentioned.
The thing I liked most about NetApp was the pointer based WAFL file system and performance over NFS. If you do plan to use NFS, I'd at least eyeball Tintri (assuming 13 TB usable is enough space), or perhaps Nimble Storage for iSCSI. Both use a much more modern design for hybrid flash.