专利名称：STORAGE CONTROLLER REDUNDANCY
USING PACKET-BASED PROTOCOL TOTRANSMIT BUFFER DATA OVER REFLECTIVEMEMORY CHANNEL
发明人：Roger T. Thorpe,Erasmo Brenes,Stephen
O'Neil,Alec Shen
申请号：US11835942申请日：20070808
公开号：US20070288792A1公开日：20071213
专利附图：
摘要：A bi-directional reflective memory channel between a pair of storage
controllers is used to maintain a mirrored copy of each storage controller's native buffercontents within the buffer of the other storage controller. To maintain such mirroredcopies, buffer write operations that fall within a reflective memory segment of onestorage controller are automatically reflected across this channel to the other storagecontroller for execution, and vice versa. The write operations are preferably transmittedacross the reflective memory channel using a protocol that provides for error checking,acknowledgements, and retransmissions. This protocol is preferably implementedentirely in automated circuitry, so that the mirrored copies are maintained without anyCPU intervention during error-free operation. When a failover occurs, the survivingstorage controller uses the mirrored copy of the failed storage controller's native buffercontents to assume control over the failed storage controller's disk drives.
申请人：Roger T. Thorpe,Erasmo Brenes,Stephen O'Neil,Alec Shen
地址：Irvine CA US,Irvine CA US,Corona CA US,Irvine CA US
国籍：US,US,US,US
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