Methods to identify, handle and recover from suspect SSDS in a clustered flash array
US9710317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Apr 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique predicts failure of one or more storage devices of a storage array serviced by a storage system and for establishes one or more threshold conditions for replacing the storage devices. The predictive technique periodically monitors soft and hard failures of the storage devices (e.g., from Self-Monitoring, Analysis and Reporting Technology), as well as various usage counters pertaining to input/output (I/O) workloads and response times of the storage devices. A heuristic procedure may be performed that combines the monitored results to calculate the predicted failure and recommend replacement of the storage devices, using one or more thresholds based on current usage and failure patterns of the storage devices. In addition, one or more policies may be provided for replacing the storage devices in a cost-effective manner that ensures non-disruptive operation and/or replacement of the SSDs, while obviating a potential catastrophic scenario based on the usage and failure patterns of the storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.