Filesystem help for a non-expert

Hello,

Is anyone able to recommend some resources (online or print) that might 
help me understand the Linux filesystem a bit better. I have been 
through about six books so far and it is still a mystery to me.

I've been having trouble with at least two of the hard drives in my 
server and there seems to be further trouble with the RAID system that 
is in place. I'd like to be able to run some diagnostic checks and if 
possible, repair the problematic disks but I'm worried that unmounting 
the disks will cause the whole system to fail (my previous attempts 
ended that way).

Thank you,

Grant Bailey




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