Future storage technologies and Linux
Posted Apr 6, 2011 6:24 UTC (Wed) by butlerm
Parent article: Future storage technologies and Linux
It is not just random writes - without multiple track read heads, random reads will require three to five rotations, setting latency back perhaps thirty years. See here (pdf).
Without a persistent non-volatile cache and extensive operating system support, it is hard to see how such drives could perform well even for general purpose desktop usage. For database and general purpose server applications, they would probably be out of the question unless the operating system could do far more than give the drive "hints" about what should be stored in low read latency and high read latency zones. However, for applications like DVRs and nearline storage, 5-10x the capacity seems like more than a worthwhile trade off for substantially increased access times.
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