On Thu, Dec 21, 2006 at 01:25:15PM -0300, Alejandro wrote: > Hi all, I have a Debian Etch machine with a SCSI HD as a master disk. I > want to make a clon to another similar SCSI HD (same model and size), in > order to use it if the production disk fails. > > People talk about "dd" command, telling it's possible to get a exact > mirror from one disk to another just running this: > > dd if=/dev/sda of=/dev/sdb > > Is this just the solution ??? No matter with the MBR or something else ??? > Hello Alejandro, (I am assuming you are still trying to solve the problem you posted about last night). You would be much better off using RAID1. My reason for suggesting that is that should /dev/sda fail, how will you switch over to the other disk? You mentioned a remote data center, so I don't imagine you will have ready access to your machine all the time. Additionally, depending on how you do the switch, some things may get confused (like /etc/fstab mounts and pretty much anything else that relies on knowing the correct identifier for the disk). Again, it is just a suggestion. Regards, -Roberto -- Roberto C. Sanchez http://people.connexer.com/~roberto http://www.connexer.com
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