[cs615asa] HW5: tar+dd backup

[wzhang32]

'via direct write to the volume as
      a block device (utilizing tar(1) on the local host and dd(1) on the
      remote instance), or via a (possibly incremental) filesystem sync 
(uti-
      lizing rsync(1)).' (ec2-backup manual)

It says that if we use sync, we should backup via filesystem. However, 
if we use tar+dd, no filesystem is needed. In other words, we need't 
make filesystem for the backup volume if the method is 'dd'. Is't 
correct?

-- 
Wen Zhang
CWID: 10402152
Contact:201-565-6871