[RndTbl] setting up RAID 1 with mdadm

Gilles Detillieux grdetil at scrc.umanitoba.ca
Thu Oct 4 08:33:11 CDT 2018

Circumstances finally forced me to bite the bullet and learn something I 
had been putting off for too long: setting up a RAID array under Linux. 
I'm almost embarrassed, now that I've done it, that I waited so long 
because it was way simpler than I'd imagined. I thought I'd have to 
figure out all kinds of magic with LVM, parted, and mdadm, but I found 
this tutorial that showed a simple set of mdadm commands to set up RAID 1:


This was actually one of the simplest scenarios: the system had an SSD 
for the root/boot partition, and two 2 TB hard drives for data storage 
(/dev/sdb & sdc), so I just needed to set up RAID 1 and not worry about 
the intricacies of booting from RAID. So, software RAID seemed like the 
quick & easy way to go with a minimum of fuss.

Now the nagging question: is it really this simple, or does the tutorial 
above oversimplify and omit some important steps? Can someone with ample 
RAID and mdadm experience advise or provide tips on anything else I 
should do or lookout for?


Gilles R. Detillieux              E-mail: <grdetil at scrc.umanitoba.ca>
Spinal Cord Research Centre       WWW:    http://www.scrc.umanitoba.ca/
Dept. of Physiology and Pathophysiology, Rady Faculty of Health Sciences,
Univ. of Manitoba  Winnipeg, MB  R3E 0J9  (Canada)

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