Patent ID: 9619163
Date: 2017-04-11
CPC Classifications: G06F,Y02D

Claim:
1. A storage management apparatus for maintaining access times in a data processing system, wherein the data processing system comprises a plurality of storage devices, the apparatus comprising: a receive component for receiving a command, the command comprising a read or write command; an evaluate component, responsive to receiving the read or write command, for evaluating a plurality of first relationships between the plurality of storage devices and a plurality of first values, wherein each of the first values indicates whether a related storage device is a redundant storage device; a send component for sending a power message to one or more of the plurality of storage devices, in response to the evaluate component determining that one or more of the plurality of storage devices is a redundant storage device; the receive component receiving an availability message, wherein the availability message indicates whether the redundant storage device is available; and an update component, in response to the receive component receiving the availability message, for updating a second relationship between the redundant storage device and a plurality of second values, wherein each of the second values indicates whether a related redundant storage device is available.