We have seen two instances recently where BackupAssist has been used to run an image job on HP Proliant servers but the job fails 98% through the image of the C: drive with the error 'Drive Cannot Find the Sector Requested'.
This would usually point to physical drive sector issues and a possible dying disk, but after some further investigation it would appear that this is actually a specific issue to do with the pre-installed status of System partitions on HP Proliant range of Server platforms.