Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a small server that boots from a usb drive and i would like to protect myself from the drive dying. I can't add another hard drive.

My question is: can i add one or two usb sticks of the same size and mirror the first one, so i can just unplug the first one when it dies and just reboot? I'd like to avoid reinstalling everything.

I am ok with a hourly or daily "backup" as long as i don't have to shutdown access to the server.

Thank you very much for your time and advice

share|improve this question
up vote 1 down vote accepted

Using Linux you can RAID USB devices. Google for mdadm and your distribution name to get to know how.

For linux there's no difference between USB block device and a SATA block device, so you just have to follow a regular tutorial.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.