The data deluge has brought renewed focus on an old problem: the enormous performance gap that exists in input/output (I/O) between a server’s memory and its storage. I/O typically takes a mere 100 nanoseconds for information stored in the server’s memory, while I/O to a hard disk drive (HDD) takes about 10 milliseconds — a difference of five orders of magnitude that is having a profound adverse impact on application performance ...
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