On 21 Apr 2010, at 09:41, Tino Schwarze wrote: > On Wed, Apr 21, 2010 at 09:43:38AM +0200, Magnus Ringdahl wrote: > >> I have a PE1950 with sas 6iR controller with one hdd. >> I wonder if its possible to add an identical hdd and create a raid-1 >> array, without reinstallation of OS? >> Does it mean i have to clone the drive? > > As far as I know, this is not possible since any RAID setup will need > some bytes of Metadata at the start or end of a partition/device.
I understood there was some 50 bytes or so in the first sector of the hard-drive that was unallocated in the conventional disk layout, and that RAID systems typically put their metadata in there. Magnus: you may be able to determine this by creating a RAID1 and then comparing an fdisk of it with the fdisk of the existing drive. If it has the same number of bytes (or more) then you can boot from a LiveCD and clone using dd (or GNU ddrescue). Stroller. _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
