Selecting a source cluster by measuring system factors, calculating a mount-to-dismount lifespan, and selecting the source cluster in response to the lifespan and a user policy
US7774094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Nov 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/224
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, and method are disclosed for selecting a source cluster in a distributed storage configuration. A measurement module measures system factors for a plurality of clusters over a plurality of instances. The clusters are in communication over a network and each cluster comprises at least one tape volume cache. A smoothing module applies a smoothing function to the system factors, wherein recent instances have higher weights. A lifespan module calculates a mount-to-dismount lifespan for each cluster from the smoothed system factors. A selection module selects a source cluster for accessing an instance of a specified volume in response to the mount-to-dismount lifespans and a user policy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.