Hello all,

I would like to mirror my linux/debian installation on another hd in case the one that is active crashes or something like that, we want to provide email services so I would want to have the system backed up (beside the files backup).
We are planning to set up these servers with debian lenny.

Thanks in advance

Daniela

Hello Daniela and Welcome to LinuxQuestions,

Have a look at CloneZilla. It has a lot of possibilities that might be interesting to you in order to recover your servers pretty fast. For what concerns your data that changes a lot, you might consider Unison as a synchronizer. Unison is pretty easy to set up and would synchronize your dynamic data to either another server, another disk, whatever.

Kind regards,

Eric

Thanks Eric, I'll take a look at clonezilla and let you know if it helped thanks again,

Daniela

Hello,

You're welcome, have fun with Linux.

Kind regards,

Eric

Hello again,

I've found something that fits better with what I intend to do, (it's actually a pretty obvious solution kind of dummy) and it is to install the linux debian on a raid 1, this way I would have the system in two different devices. I'll let you know how this goes.

Regards,

Daniela

Hello,

Please read up about RAID configurations, RAID1 only gives you mirroring of a disk, it does not provide a backup of your system. RAID is used to have redundancy in disks so that if one disk fails you can still keep working and replace the other disk (be it hot swappable or not). It will not protect you from a system failure since all errors and things that happen on let's say your primary disk will be automatically synchronized to the mirror (the secondary disk). So if your system fails both your disks will be useless and unusable.

Kind regards,

Eric