Network Appliance, Inc.

Adaptec, Inc.

Yee-Peng Wang

J Eric Mowat

Raghu Mallena

Edward S Chim

Carlos G Maltzahn

A network caching device includes primary storage and secondary storage. The network caching device creates a set of metafile entries, each of which contains metadata for a logical grouping of related objects cached by the network caching device, and uses the set of metafile entries to reduce accesses to the secondary storage in response to requests for the objects.

Method and apparatus to improve buffer cache hit rate

A peripheral coupled to a SCSI bus is isolated using a SCAM isolation step and the original SCSI identification bits (32 bytes) are read from the isolated peripheral into a host adapter. The host adapter then generates a relatively small number (for example, 4 bytes) of identification bits from the relatively large number of original SCSI identification bits. The small number of SCSI identification bits is stored in a non-volatile memory of the host adapter such that the memory location of the SCSI identification bits of a particular peripheral corresponds with the logical system identifier of that peripheral. Even if peripherals are removed from the bus and/or added to the bus, the small number of SCSI identification bits for a peripheral previously on the bus is redetermined and located in non-volatile memory of the host adapter so that the logical system identifier of the peripheral previously coupled to the bus is not changed.

Growing community of inventors

Milpitas, CA, United States of America

Yee-Peng Wang