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Purchase criteria for all-flash storage arrays
This article is part of the August 2014 Vol. 13 No. 6 issue of Storage magazine
All-flash storage arrays are hot. Suddenly, there are dozens of available systems from startups and established vendors alike. And a lot of them claim they can deliver all-flash arrays at prices lower than high-end 15K rpm hard disk drive (HDD)-based arrays. Not to be outdone, at least one "hybrid" array supplier claims it can deliver all-flash array-like performance at well below high-end HDD array prices. All of this makes selecting the right system for your environment that much more complicated. Purchase criteria for all-flash arrays must begin with performance, and there are three important factors to consider: IOPS, latency and throughput. Depending on your application, either IOPS or throughput will come into play. IOPS will reign supreme for small-block I/O-bound applications, while throughput is key for large-block I/O-bound applications. Latency is important in all cases. You'll quickly discover that existing HDD-based designs that have been modified to become all-flash arrays don't deliver sizzling performance. Flash ...
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Ensuring your data protection policy will actually work when needed may require the use of multiple monitoring tools.
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Columns in this issue
You may feel like a mouse in a maze if you're shopping for data storage systems these days.
Warmed-over or half-baked technology ideas might produce profits for the vendors that manufacture them, but they won't solve storage puzzles.
Virtual data protection strategies require admins to modernize production and protection at the same time to lessen the impact on performance.
All-flash storage arrays share the common trait of being fast, but once you get past the speed, there's still a lot to consider.