• Boosts the speed of the 'sync' and 'scrub' commands with a new
  multi-thread implementation. It uses one thread for each disk,
  dedicated exclusively to read-ahead data and parity and to
  write-behind parity. This maximizes the data throughput keeping
  disks always busy.
  You can control the number of blocks to cache with the option
  --test-io-cache=NUMBER, where the number is between 3 and 128.
  The default is 8 MiB of blocks.
  You can show run-time stats during the process with the
  --test-io-stats option. You will see a graph with the number of
  cached blocks, and a graph with the wait time percentage for all the
  disks and computations.
• The -h, --pre-hash command, saves the content file only after having
  verified all the hashes. This allows recovering of moved files in
  case a silent error is found during the hash verification check.
• Allows to use the -d, --filter-disk option in the 'up' and 'down'
  commands.
• Allows to run the 'smart' command without a configuration file.
  In such case it operates on all the disks of the machine.
• In the configuration file 'data' is now a synonymous of 'disk'.
• Adds the 'touch' command intended to arbitrarily set all the zero
  sub-second timestamps. This improves the SnapRAID capabilities to
  identify files. The 'status' command recommends to run 'touch' if
  required.
• Restores the functionality of the -D, --force-device option when used
  to workaround the use of the same disk for two logical data drives
  when running the 'fix' command.
• Uses a correct shell quoting in the example commands that involve
  files.
• The minimum Windows version supported is now Windows Vista. This is
  required to use the native Windows thread support for the new
  multi-thread implementation. If you need to run on Windows XP, you
  have to stick on SnapRAID 9.x.