Gibson, G. et. al., `Error Correction in Large Disk Arrays', Proc. 3rd Int. Conf. on ASPLOS, Boston, MA, April 1989.  Home/Search   Document Not in Database   Summary   Related Articles

....in disaster recovery. This paper presents the new algorithm and then compares it against various other multicopy and disaster recovery techniques. 1. Introduction In a sequence of recent papers, the concept of a single site RAID (Redundant Array of Inexpensive Disks) was introduced and developed [PATT88, PATT89, GIBS89]. Such disk systems have the desirable property that they survive disk crashes and require only one extra disk for each group of G disks. Hence, the space cost of high availability is only 100 percent, a modest amount compared to traditional schemes which mirror each physical disk at a space ....

....Finally, it is also possible to utilize a two dimensional RADD. In such a system the sites are arranged into a two dimensional array and row and column parities are constructed, each according to the formulas of Section 3. We call this scheme 2D RADD, and a variation of this idea was developed in [GIBS89]. The comparison considers the space overhead as well as the cost of read and write operations for each scheme under various system conditions. The second issue is reliability, and we examine two metrics for each system. The first metric is the mean time to unavailability of a specific data item, ....

Gibson, G. et. al., `Error Correction in Large Disk Arrays', Proc. 3rd Int. Conf. on ASPLOS, Boston, MA, April 1989.

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