A method for storing data comprising is disclosed. The method comprises receiving a data stream comprising a plurality of data segments wherein each data segment is associated with an identifier. The method further determining using a subset of identifiers that are stored in a low latency memory whether a data segments has been previously stored and returning the identifier for the data segment in the event the data segment is determined to have been stored previously.

 
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> Cache synchronization in a RAID subsystem using serial attached SCSI and/or serial ATA

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