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Access "Safer SATA for nearline apps"

Published: 19 Oct 2012
Better disaster recovery testing techniques

This article is part of the Vol. 4 No. 8 October 2005 issue of Better disaster recovery testing techniques

For nearline applications like backup and archiving, any old SATA disk drive won't do, say vendors; you want a drive that has been tested using workloads that approximate the actual environments it will be used in. Seagate's NL35 drive, in qualifications with interested channels, "fits the standard definition of SATA in terms of performance, but it's rated in a nearline workload," says Pete Steege, Seagate's senior product manager for enterprise storage. That means that unlike desktop drives, which are frequently powered up and down, the NL35 is rated to a continuous 1 million hour meantime before failure (MTBF) rate. Another NL35 feature is workload management, which monitors the drive, throttles it if it's being overused and issues read-after-write commands. That reduces wear on the head, Steege says, and "ensures that what you wrote is really there." Improved error-recovery control, meanwhile, prevents drives from being taken out of commission prematurely. SATA drives can sometimes heal common errors on their own, but applications used to more reliable ... Access >>>

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