+--server-tuning
|   +--dd
|   +--fdtree
|   +--fs
|   +--loader
|   +--memcached
|   +--metadata
|   +--network
|   +--perflog
|   |   +--cron-perflog
|   |   +--sample-output
|   +--postgres
|   +--postmark
|   +--raid
|   +--ram
|   +--scaling
|   +--swap

RAID notes

==> build-and-sync <==

    Speeding up RAID resync
    
        http://www.cyberciti.biz/tips/linux-raid-increase-resync-rebuild-speed.html
    
        Current RAID settings:
    
        --------------------------------------------------------------------S
        root# sysctl -a | grep raid
        dev.raid.speed_limit_max = 200000
        dev.raid.speed_limit_min = 1000