Multi-mapped flash raid
AssigneeAvago Technologies General IP (Singapore) Pte. Ltd.
InventorsBret S. Weber, Timothy E. Hoglund, Robert E. Ober
Life of this patent
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Abstract
Disclosed is a storage system. The storage system includes a redundant array of inexpensive disks (RAID) controller. The RAID controller includes a flash memory controller coupled to a flash memory. The flash memory controller may perform background management tasks. These include logging and error reporting, address translation, cache table management, bad block management, defect management, wear leveling, and garbage collection. The array controller also allows the flash memory to be divided into multiple mappings.
Claims16
A storage array controller, comprising:
- a RAID controller;
- a flash memory controller configured to map a first range of flash memory as an I/O device, and a second range of flash memory as system memory.
A computer peripheral, comprising:
- a RAID controller projecting a first disk drive as a first logical unit number;
- and,
- a flash controller, integrated with said RAID controller, projecting a first address range of a flash memory device as a second logical unit number.
Dependencies are inferred from the claim text.