International Business Machines Corporation

Ramakrishna Vadla

Sandeep R Patil

Sasikanth Eda

Anbazhagan Mani

Amey P Gokhale

Ranjith Rajagopalan Nair

Archana Chinnaiah

Shubham Darokar

A method, computer system, and a computer program product for block prediction are provided. A computer receives a first retrieval request for retrieving data from storage blocks. The computer performs a cosine similarity comparison of the first retrieval request compared to prior data retrievals. The computer selects a matching data retrieval of the prior data retrievals. The matching data retrieval has a closest match to the first retrieval request based on the cosine similarity comparison. The computer identifies another storage block from the matching data retrieval as a predicted block for the first retrieval request. The computer transmits a prefetch request to prefetch data from the predicted block.

Block access prediction for hybrid cloud storage

A mechanism is provided in a data processing system comprising at least one processor and at least one memory, the at least one memory comprising instructions which are executed by the at least one processor and configure the processor to implement a proxy server for hybrid geo-dispersed erasure coding (EC). Responsive to receiving from an application server a request to write an object, the proxy server in a first storage site splits the object into a plurality of EC slices. The proxy server stores a first EC slice in a first storage device via a storage server local to the proxy server. The proxy server stores a plurality of remaining EC slices in a cache storage local to the proxy server. Responsive to determining that network access is available to disperse the plurality of slices among a plurality of geographically distributed storage sites, the proxy server copies the plurality of remaining EC slices to the plurality of geographically distributed storage sites using geo-dispersed erasure coding.

Efficient high availability and storage efficiency in a multi-site object storage environment

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Patacheru, India

Ramakrishna Vadla