Patent ID: 7546478
Filing Date: 2009-06-09
Classification: G06F,G11B

Abstract:
1. A method to provide power to a plurality of data storage devices disposed in a data storage system, comprising the steps of: providing a data storage system comprising a system controller comprising a data storage device power-up algorithm, a plurality of local controllers, and a plurality of data storage devices, a data storage device assembly wherein said data storage device assembly comprises two or more data storage devices, a local controller wherein said local controller bidirectionally communicates with said system controller and wherein said local controller bidirectionally communicates with said data storage device assembly, wherein each of the plurality of data storage devices cannot automatically provide a device present signal; detecting the presence of each of said plurality of data storage devices; providing power to each of said plurality of data storage devices using said data storage device power-up algorithm; providing power to said local controller prior to said detecting step, wherein said detecting step is performed by said local controller; providing full power to said system controller after said detecting step; providing by said local controller to said system controller a data storage device present signal for each of said detected data storage devices.