Managing storage devices having a lifetime of a finite number of operations

    公开(公告)号:GB2514354A

    公开(公告)日:2014-11-26

    申请号:GB201309062

    申请日:2013-05-20

    Applicant: IBM

    Abstract: A storage system consists of number of storage devices. The storage devices have a limit on the number operations of that can be performed on the device. The devices may be solid state devices, which have a limit on the number of program/erase cycles performed. The storage system estimates the date that each device will reach the limit. For each date, it then calculates how many devices will reach the limit within a predetermined period of time of that date. If the number of devices divided by the period is greater than the average rate of all devices reaching the limit, then an action is carried out to reduce the number. The action may increase the number of operations to a device estimated to reach the limit before the date. The action may decrease the number of operations to a device estimated to reach the limit after the date.

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