I have two non-networked servers, each with 1.2TB of storage in a RAID5 config on an LSI MegaRaid 9240-8i controller. I have been trying without success to get Symantec Ghost to image one machine to the other due to driver issues, and so I was wondering if it wouldn't be easier to boot from a Linux LiveCD, plug in an external hard disk and
dd the RAID partition to the external disk.
The 1.2TB partition only has around 10GB of data on it, so I hope to generate a sparse image file (to avoid having to find a 1.2TB USB disk!). I have seen people use the
seek parameter of
dd to achieve this - is that an appropriate way to create an image of around 10GB size in this situation?
Even if this is a sensible way to generate a sparse image, is this a sensible way to mirror one RAID to another of identical configuration, or do the commercial utilities such as Ghost and Acronis do some 'magic' that
dd does not?