As always, please sign up (https://skillsmatter.com/meetups/8284-papers-we-love-meetup) at Skills Matter and thanks to them for hosting us!
Tom Hall on Plank's "A Tutorial on Reed-Solomon Coding for
Fault-Tolerance in RAID-like Systems"
In what will be my last Papers We Love before taking a long overdue sabbatical and leaving the UK for a while I want to explain how RAID works, why we need it and why existing strategies may become less useful at protecting us from data loss.
The paper  is for systems programmers, is quite accessible (modulo an error corrected in a follow-up 7 years later ) and explains a strategy to survive any number of disk failures by maintaining checksums using Galois Fields (which it also explains)
You may find it useful to also look at 'The mathematics of RAID-6'  explaining what the linux kernels RAID6 implementation does.