Extending adapter memory with solid state disks in JBOD and RAID environments
US6467022B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Nov 3, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/312
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Solid State Disk (“SSD”) and accompanying logic to extend the local memory of an adapter for RAID storage devices. Use of virtual memory, representing the SSD range of addresses in the adapter address memory, allows the adapter to incorporate the total memory into the adapter memory structure. The SSD is non-volatile and large amounts of cache items may be transferred to the SSD as an extension of the adapter memory. The cache write may be delayed and subsequently written to a designated address on a RAID drive, freeing the adapter on-board memory and control functions. Further, the size of the SSD allows for large amounts of data staging and storage, permitting device-to-device communications that would reduce the read and write commands between the host, adapter and drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.