# Set read-ahead.
echo "Setting read-ahead to 64 MiB for /dev/md3"
blockdev --setra 65536 /dev/md3

# Set stripe-cache_size for RAID5.
echo "Setting stripe_cache_size to 16 MiB for /dev/md3"
echo 16384 > /sys/block/md3/md/stripe_cache_size

# Disable NCQ on all disks. (for raptors it increases the speed 30-40MiB/s)
echo "Disabling NCQ on all disks..."
for i in $DISKS
do
  echo "Disabling NCQ on $i"
  echo 1 > /sys/block/"$i"/device/queue_depth
done