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SHIFTING WEAROUT OF STORAGE DISKS

  • US 20170115903A1
  • Filed: 03/14/2016
  • Published: 04/27/2017
  • Est. Priority Date: 10/22/2015
  • Status: Active Grant
First Claim
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1. A method for forestalling data loss caused by wearout of storage disks in an array of storage disks in a storage system, the method comprising:

  • monitoring, by a controller, a rate of writes for a first storage disk in the array;

    determining, by the controller, a predicted mean time to failure of the first storage disk based on the rate of writes;

    determining, by the controller, a start time based on the predicted mean time to failure, a number of storage disks in the array, and an estimated time taken to replace a storage disk in the array; and

    issuing, by the controller, at the start time, a notification, the notification including an alert to replace a first storage disk, wherein the notification is issued prior to the first storage disk reaching a wearout, and wherein replacing the first storage disk in response to the notification forestalls data loss caused by a wearout of a second storage disk in conjunction with the wearout of the first storage device.

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