[CentOS] [OT] RAID 6 - opinions

Fri Apr 12 06:11:36 UTC 2013
John R Pierce <pierce at hogranch.com>

On 4/11/2013 10:48 PM, Keith Keller wrote:
> (As an aside, how
> does the kernel handle more than 26 hard drive devices?  sdaa?  sdA?)

sdaa, sdab, sdac, ... sdba, sdbb, sdbc....  etc etc.

and yes, if you have 40+ disks as JBOD, its a bloody mess, especially if 
linux udev starts getting creative.

many of the systems I design get deployed in remote DCs and are 
installed, managed and operated by local personnel where I have no clue 
as to the levels of their skills, so its in my best interest to make the 
procedures as simple and failsafe as possible.   when faced with a wall 
of 20 storage servers, each with 48 disks, good luck with finding that 
20 digit alphanumeric serial number "3KT190V20000754280ED"   ... uh HUH, 
thats assuming all 960 disks got just the right sticker put on the 
caddies.    'replace the drives with the red blinking lights' is much 
simpler than 'figure out what /dev/sdac is on server 12'

john r pierce                                      37N 122W
somewhere on the middle of the left coast