Low latency replication techniques with content addressable storage
US9639591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2012 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 2, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/275
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A CAS data storage method and apparatus comprising: receiving input data including a succession of data items with corresponding logical addresses at a source CAS data storage space for storage therein and for replication at a destination CAS data storage space, generating a hash key for each data item at the source storage space, comparing respective hash keys with hash keys stored at a hash key storage table, to determine whether respective further data items are already present at the destination storage device; transferring respective data items to the destination storage space if no match is made to a hash key stored at the hash key storage table, but not transferring respective further data items if a match is made to a hash key stored at the hash key storage table, thereby transferring to the destination storage space only unique data items.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.