Reducing latency of access requests in distributed storage...

Details Reducing latency of access requests in distributed storage... Reducing latency of access requests in distributed storage...

2011-04-05

2011-04-05

Chan, Wing F (Department: 2441)

Electrical computers and digital processing systems: multicomput

Multicomputer data transferring via shared memory

C709S223000, C707S793000

Reexamination Certificate

active

07921179

ABSTRACT:
Described are methods and apparatus for reducing latency of read and write requests for a set of storage system sites having a shared data set. An owner site may directly write to the shared data set and contains current data regarding the shared data set. The remote sites may experience substantial latency when accessing the shared data set stored at the owner site. Synchronizing and caching methods may reduce overall read latency experienced at remote sites by periodically transmitting images of the shared data set to the remote sites. Also, a migration method may be used to change ownership of the shared data set from a current owner site (that may be receiving a relatively low number of read/write requests) to a new owner site (that may be receiving a relatively high number of read/write requests) to reduce the overall read and write latency experienced in the sites.

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