Method and apparatus for managing a heterogeneous data storage system
US6571310B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A set of data storage devices are used to store heterogeneous data, i.e., to store some alphanumeric data, and some multimedia data. The internal operating parameters of the storage devices are monitored, and data is selectively stored by matching the type of data to the internal operating parameters of the storage devices. Preferably, the set of data storage devices is a RAID system containing multiple rotating magnetic disk drive storage devices. The system monitors the operating temperature, the soft error rate, the head flyheight, and the actuator performance of the drives in the system. A fuzzy logic classification system is used to generate a set of fuzzy classification scores evaluating each drive as most appropriate to one of three types of data: alphanumeric, graphics/sound, or video. A drive is selected for storing a type of data according to the fuzzy classification scores. Optionally, a separate set of fuzzy classification scores is generated for each disk surface, and each disk surface may independently be allocated to data of different types. In the preferred embodiment, a disk drive has on-board soft error recovery procedures for recovering data following a soft erro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.