Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-10-17
2006-10-17
Padmanabhan, Mano (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S147000, C711S112000, C711S114000, C711S148000, C711S153000, C711S161000, C711S165000, C707S793000, C707S793000, C714S006130, C714S015000, C714S020000, C714S047300
Reexamination Certificate
active
07124264
ABSTRACT:
The present invention relates to a storage system, including a first storage unit having a first storage volume for storing data, and a second storage unit having a second storage volume communicably connected with the first storage unit, wherein the first storage unit further comprises a replication data transmission unit for transmitting the replication of data to a second storage unit when the data is written to the first storage volume, the second storage unit further comprises a replication data reception unit for writing the replication of the data transmitted by the replication data transmission unit to the second storage volume, the first storage unit further comprises a disk heart beat write unit for repeatedly writing a first heart beat message to the first storage volume at intervals within a predetermined time, and the second storage unit further comprise a disk heart beat detection unit for detecting the replication of the first heart beat message to be written to the second storage volume by the replication data reception unit.
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Hitachi , Ltd.
Moore Patrick M
Padmanabhan Mano
Townsend and Townsend / and Crew LLP
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