Load balancing technique for a storage array
US9720601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Mar 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0688
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for load balancing uses heuristic-based algorithms with respect to input/output (I/O) latency of workloads destined to storage devices, e.g., solid state drives (SSDs), of a storage array attached to a storage system. Illustratively, “front-end” requests received from a host result in a back-end workload as those requests are processed by a storage I/O stack of the storage system and stored on the storage array. Accordingly, the technique maintains a consistent latency for the host requests (front-end) to control latency for the back-end workload. The load balancing technique illustratively load balances fixed (back-end) workloads having similar I/O sizes and I/O patterns. Illustratively, the technique balances the workloads across a plurality of storage ports over one or more I/O paths to the SSDs. Access to the SSDs may then be distributed among the storage ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.