AFA – All-Flash Array, as opposed to an all-disk drive or hybrid SSD/HDD storage array. An all-flash array is a storage array composed solely from SSDs or other NAND drives with no disk drives used at all. Such an array will respond faster to IO requests than disk array because its drives don’t suffer from seek time waits; the period needed for a disk drive’s read-write head to move to the right track on a disk drive and then wait for the disk’s rotation to bring the right track position under the head.
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