@InProceedings{BDJOR11,
  author = 	 { Kevin D. Bowers and Marten van Dijk and Ari Juels and Alina Oprea and Ronald L. Rivest },
  title = 	 { How to Tell if Your Cloud Files are Vulnerable to Drive Crashes },
  doi =          { 10.1145/2046707.2046766 },
  acm =          { 6592511 },                   
  booktitle =    { Proceedings 18th Annual ACM Conference on Computer and Communications Security },
  publisher =    { ACM },
  date =         { 2011 },
  OPTyear =      { 2011 },
  OPTmonth =     { October 18, },
  eventtitle =   { CCS'11 },                  
  eventdate =    { 2011-10-17/2011-10-21 },                  
  venue =        { Chicago, Illinois },                  
  pages = 	 { 501--514 },
  editor = 	 { George Danezis and Vitaly Shmatikov },
  urla =         { <a href="http://www.sigsac.org/ccs/CCS2011/index.shtml">CCS'11</a> },                  
  keywords =     { cloud storage systems, auditing, fault tolerance, erasure codes },                  
  abstract =     {
    This paper presents a new challenge---verifying that a remote server
    is storing a file in a fault-tolerant manner, i.e., such that it can survive
    hard-drive failures.  We describe an approach called the Remote
    Assessment of Fault Tolerance (RAFT).  The key technique in
    a RAFT is to measure the time taken for a server to respond to a
    read request for a collection of file blocks. The larger the number
    of hard drives across which a file is distributed, the faster the read
    request response.  Erasure codes also play an important role in our
    solution.  We describe a theoretical framework for RAFTs and offer
    experimental evidence that RAFTs can work in practice in several
    settings of interest.                  
                 },
}