Linux - ServerThis forum is for the discussion of Linux Software used in a server related context.
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.
Does anyone know if its possible to backup 3 drives to 1, I currently have 3 seperate drives in my server (there old ones that total to about 300 gig) and I want to back them all up to one drive just incase. If i bought one drive would it be easy enough to set it up as a backup and also can raid do this and are there any major performance issues?
Theoretically speaking, the new hd will have a better performance than the 3 old ones. Hence, which method you intend to use:-
1) Use the old hd's has primary (raided) and new asa backup
2) Use the new hd has the primary and the old as backup
Performance won't change in the old ones.
However, I would have setup the new hd as my primary hd to increase daily performance on the workstation. Then raid the 3 old ones for dail, weekly , monthly backup. Which could be done over night.
Remember, RAID is not a backup solution. It's failover type protection in case hardware fails and gives you time to replace. But it's never ever ever ever a backup solution. Just thought I'd throw that out there for anyone who wasn't aware.
So if i set up a new drive as the primary and put all the data into the new one then just use a backup program to backup the relevant parts to the old drives?
We did some theory about RAID in college which is why i thought it would be easier to just get the one drive to mimic all the others.
Just got a couple of questions,
1. is it possible to virtually join the 3 old drives into one?
2. if i copy the entire linux filesystem across will it work without needing a reinstall? (Running Ubuntu 7.10)
Regarding (2), you can transfer your install to a new drive, but there are a couple of potential issues, which can be easily patched up:
If you copy your installation to the new HD file by file (using rsync -a), you will need to re-install grub to the MBR of the new drive. I usually do this by booting from my rescue disk, chroot to the installation on the HD, and running grub-install.
The new drive may be detected by the bios differently from the old one, and end up with a different device name ( hda becomes hdb or sda, for example). This change will need to be reflected in your grub menu.lst and possibly device.map, as well as fstab. You can do this in rescue mode as well.
If you switch to a new drive technology, say from ata to sata, the driver for the controller chip, which is loaded at boot time, may be different. This is fixed by making a new initrd in /boot, using mkinitrd. Again, this can be done in rescue mode.