HOST-BASED READ PERFORMANCE OPTIMIZATION OF A CONTENT ADDRESSABLE STORAGE SYSTEM

摘要

An apparatus in one embodiment comprises at least one processing device comprising a processor coupled to a memory, with the processing device being configured to maintain a content-based signature cache for a plurality of data pages. For each of a plurality of read operations to be directed to a distributed content addressable storage (CAS) system, the processing device determines if a data page targeted by the read operation has a corresponding content-based signature in the content-based signature cache. Responsive to the data page having a content-based signature in the content-based signature cache, the processing device identifies a particular storage node that stores the data page in the distributed CAS system, and directs the read operation to the identified storage node using the content-based signature to specify the data page targeted by the read operation. The processing device illustratively comprises a host device coupled to the CAS system over a network.