"Isilon Systems announced this week that the firm has been granted a
U.S. Patent. The patent, number 7,146,524, is entitled "Systems and
methods for providing a distributed file system incorporating a virtual
United States Patent 7,146,524
Patel , et al. December 5, 2006
Assignee: Isilon Systems, Inc. (Seattle, WA)
"A virtual hot spare may be implemented using a variety of methods.
Three methods described herein are the "per stripe" method, "per file"
method, and "per data" method. It is recognized that other methods may
"the virtual hot spare emulates a conventional idle hot spare as used
in traditional RAID storage systems"