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How do I spin-down the disk for an attached USB SATA hard drive?

April 26, 2017attached disk SATA USB

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How do I spin-down the disk for an attached USB SATA hard drive?

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Use this command to perform an immediate spin-down of an attached USB SATA drive thus saving on power usage but could sacrifice on I/O performance (i.e., The drive will need to be spun-up prior to accessing it again). Install the RPM package: “sg3_utils” and then use the “sg_start” utility to spin-down a disk. The example below will spin-down the attached USB SATA hard drive associated with device: “/dev/sdc1”.