Systems and methods for load balancing storage system requests in a multi-path environment based on transfer speed of the multiple paths
US7839788B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2008 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jan 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems for distributing I/O requests from a computer system to a storage system over multiple paths having non-homogeneous transfer speeds. A large I/O request is partitioned into a plurality of smaller I/O operations between a computer system and a storage system. The I/O operations are distributed over a plurality of communication paths coupling the computer system and the storage system. The distribution attempts to balance the load over the multiple paths based on the transfer speed of each path. In one embodiment, operations are distributed only to the highest speed paths presently operable. In another embodiment, an estimated completion time for an operation is determined for each path and a path with the lowest estimated completion time is selected to transfer the next operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.