OREANDA-NEWS. Fujitsu Laboratories Ltd. today announced the development of a disk-recovery technique that is faster than existing methods and that can handle multiple failures, reducing the risk that important data will be lost.

RAID is a widely used technology for protecting data against disk failures, but with the explosive growth in data being generated through the use of web services, the increase in time needed to recover data lost through disk failures is becoming a problem.

Fujitsu Laboratories has now developed a high-speed recovery process, devising a unique structure for managing blocks of data - units of storage - by groups, which maintains the same tolerance to disk failures as the existing RAID technology while speeding up recoveries by 20% or more with flexible trade-off of space efficiency in accordance with the usage scenario when there are multiple failures, such as when two disks fail simultaneously.

The development of this process will enable faster recovery of storage as online content increases in line with an expansion in cloud and web services.

Details of this technology have been announced at USENIX HotDep '14, opened October 5 in Colorado.