Joseph F Krantz

US Patent:

62694537, Jul 31, 2001

Filed:

Jun 29, 1993

Appl. No.:

8/084370

Inventors:

Joseph F. Krantz - Colorado Springs CO

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

G06F 1100

US Classification:

714 6

Abstract:

In a storage system having a plurality of disks arranged in a RAID array with one of the disks failed, a method of reorganizing the data on the RAID array at the time of failure to prevent both a decrease in performance of the array and reliability of the data and an increase in the cost of operation. Data from the failed disk is regenerated one strip at a time and written onto the original parity chunk for the strip. The resulting fully folded array has the characteristics of a RAID level 0 array. When a replacement disk is inserted into the array the process is reversed to bring the fully folded array back to a fully redundant condition.