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Violin Memory. Their unique architecture doesn't use SSDs. Instead they've designed a system that goes direct to the flash chips and offers excellent and reliably low latency.
Kaminario. Their SSD array is based on DRAM, not flash, for maximum performance. If microseconds count, you've probably already bought one.
Pure Storage. Incorporating Samsung SSDs, they've built an all flash array that looks a lot like disk arrays except the performance is way better.
And the performance is everything where money is no object
Credit: Pure Storage