Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2008-06-17
2008-06-17
Sparks, Donald (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S129000, C711S130000, C710S022000
Reexamination Certificate
active
07389382
ABSTRACT:
A technique is described for facilitating block level access operations to be performed at a remote volume via a wide area network (WAN). The block level access operations may be initiated by at least one host which is a member of a local area network (LAN). The LAN includes a block cache mechanism configured or designed to cache block data in accordance with a block level protocol. A block level access request is received from a host on the LAN. In response to the block level access request, a portion of block data may be cached in the block cache mechanism using a block level protocol. In at least one implementation, portions of block data in the block cache mechanism may be identified as “dirty” data which has not yet been stored in the remote volume. Block level write operations may be performed over the WAN to cause the identified dirty data in the block cache mechanism to be stored at the remote volume.
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Bakke Mark
Kuik Timothy
Thompson Dave
Cisco Technology Inc.
Farrokh Hashem
Sparks Donald
Weaver Austin Villeneuve & Sampson LLP
Wolf Dean E.
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