초록 ▼

A system and method are provided for sharing a data stream between a first data storage system in communication with a second data storage system. Meta-data is associated with each record of the data stream. Zero or more records of the data stream are compressed at the first storage system. The meta

A system and method are provided for sharing a data stream between a first data storage system in communication with a second data storage system. Meta-data is associated with each record of the data stream. Zero or more records of the data stream are compressed at the first storage system. The meta-data for the compressed data record is updated to indicate that the data record has been compressed. The data stream including the compressed data record with the updated meta-data is sent to the second storage system. The meta-data and the data stream records are stored on a storage device at the second data storage system.

대표청구항 ▼

A system for sharing a data stream of data records between a first and second storage system in communication with each other and each storage system wherein both compressed and non-compressed data records are transmitted as part of the data stream in communication with at least one host system, eac

A system for sharing a data stream of data records between a first and second storage system in communication with each other and each storage system wherein both compressed and non-compressed data records are transmitted as part of the data stream in communication with at least one host system, each storage system including at least one storage device having a plurality of data records stored on the storage device, said system comprising: means for associating with at least one data record stored on the first storage system a record length indicator; compression means for compressing and decompressing at least one data record at the first storage system independent of the host system and the second storage system; means for associating with a compressed data record stored on the first storage system a compressed data record length indicator; means for sending the data stream including the compressed data record with the record length indicator and a compressed record length indicator from the first storage system to the second storage system; means for storing the compressed data record and indicators on a storage device at the second storage subsystem; means for retrieving a data record from a storage device at the second storage system; means for identifying a compressed data record, at the second storage system independent of the first storage system and the host system means for decompressing the compressed data record at the second storage system independent of the first storage system and the host system; and means for sending a data stream to a requesting host system directly from the second storage system independent of the first storage system and the host system; means for transferring the data stream from the second storage system to a third storage system wherein all data records in the data stream are in a non-compressed state, means for transferring a data record from the second storage system to the third storage subsystem in a compressed state wherein the third storage subsystem is unaware of the compressed state and stores the data record on a storage device controlled by the third storage system independent of the first and the second storage system and the host system.