Configuring 3TB HD

Instruction to configure two 3TB (or 4TB) HDs in Raid0 or Raid1:

--Get root

sudo -E -s

---Navigate to sbin directory

cd /sbin

---Partition the first drive with GNU parted (to make a GPT file format so that 3TB+ drives work)

./parted /dev/sda

mklabel gpt

unit TB

mkpart primary 0.00TB 3.00TB #(4.00TB for 4tb but I haven't tried it).

print

quit

---Partition the second drive with GNU parted

./parted /dev/sdb

mklabel gpt

unit TB

mkpart primary 0.00TB 3.00TB

print

quit

---Make the raid0 array with a blocksize of 128 (the blocksize is defaulted to 64, but 128 might be more desireable)

./mdadm --create /dev/md0 --level=0 --chunk=128 --raid-devices=2 /dev/sda1 /dev/sdb1

y

or

---Make the raid1 array

./mdadm --create /dev/md0 --level=1 --chunk=128 --raid-devices=2 /dev/sda1 /dev/sdb1

y

--- Wait for sync *** Takes Long Time *** Mine took 4 1/2 hours.

watch

cat /proc/mdstat (also shows in web interface)

---Make the USB Stick a swap partition and mount it as swap drive

./mkswap /dev/sdc

./swapon /dev/sdc

---Then we partition the drives to XFS filesystem

./mkfs.xfs /dev/md0

---Then we are going to text edit the fstab system (this system mounts the drive at startup)

nano /etc/fstab

Remove the # in front of or add this line:

/dev/md0 /home xfs defaults,bsdgroups,noatime,nodiratime 0 0

Then as a finishing very important touch we make sure that the raid0 array is remembered at startup

./mdadm -Q --detail --brief /dev/md0 > /etc/mdadm.conf

Then reboot the device

./reboot

Wait a few minutes, you should see the device boot. The HDD leds will go from green to orange for a few seconds, don't worry they will become green again and you should hear the HDD's working. This is probably the stora finalizing the partition so that it's ready for use.