Linux - GeneralThis Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
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.
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.
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.
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.