HDD Write Test

HDD Write Test

To write 50G of nothing
cd /mnt
dd if=/dev/zero of=my50Gfile bs=1024M count=50

To time it, do

time dd if=/dev/zero of=my50Gfile bs=1024M count=50


More workaround:
dd if=/dev/zero of=diskfiller.tmpfile bs=1000M count=99999999

==> Takes 5 hrs for a 400G strip on 2 drives.