Patent ID: 9361047
Filing Date: 2016-06-07
CPC Classification: G06F

Claim Text:
1. A method of operating a data storage system, the data storage system comprising a plurality of memory units configured to store and retrieve data, each memory unit comprising a plurality of memory modules, the method comprising: selecting a RAID group comprising at least one memory module of each of a group of memory units of the plurality of memory units; configuring the memory modules of the RAID group to have a frame time having an integral number of epoch times; maintaining a synchronization of a start time of the frame time by receiving, at each memory unit, a same periodic signal having a period that is an integral multiple of the epoch time; adjusting a time-determining circuit at each of the memory modules so as to minimize a difference between the start time of the frame time at each memory module and the same periodic signal; and operating the memory modules of the RAID group such that data previously written to the memory modules of the RAID group is retrieved without delay due to at least one of writing data to or performing an erase operation on the RAID group.