If you are looking for extreme storage you can't top HP's 3PAR 7450 server at this time.  With a total capacity of 460TB you can have the largest and fastest commercially available storage for whatever you need stored.  There are some very interesting enterprise level features on this device, from deduplication to Adaptive Sparing which allows the 7450 to recover some of the over-provisioned storage on the drive used to replace failed flash.  They also offer a 5 year warranty on the drives inside as well as guaranteeing six 9's of reliability which works out to less than a minute of downtime per year.  According to what HP told The Register you can expect to pay $2/GB; it is nice to dream isn't it?

"The drives actually have 1.6TB of raw flash capacity but, using this aforementioned technology, HP says it can recover some of the over-provisioned storage – so the effective capacity of the 7450 SSDs is up to 1.92TB. Note the “up to” in HP’s statement; a cue for lots of fierce examination of Megsco’s capacity uplifting claims by competing suppliers."

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