This post first appeared on the Kaminario Blog – http://kaminario.com/blog/flash-economics-choosing-right-ssd/
At a superficial level, it’s easy to assume that all solid-state disks (SSDs) are the same. In reality, that assumption couldn’t be further from the truth. SSDs continue to evolve and are dividing into a broad product category, in much the same way that hard disk drives have done over the last 10-20 years. The result of this is that devices on the market vary in terms of price, capacity, endurance and performance. Choosing the right SSD to use in all-flash arrays becomes a mix of all these factors, plus one vitally important one; the way in which data is written to and from the device.