RAID 5 on a new server

I’ve a complete lack of understanding of RAID. :o(
I have a new server at scaleaway which supposedly say 3 x 6TB set up as RAID 5.

A - SATA - 5.46 TB
B - SATA - 5.46 TB
C - SATA - 5.46 TB

however ,in Virtualmin I see this:
the drive status in the control panel shows as this:
/ ext4 95% (10.27 TiB) 10.82 TiB UUID=916e116b-de11-4459-b30f-516ac4d91e2d
/boot ext4 81% (782.08 MiB) 968.27 MiB UUID=d14d9051-b9c6-4131-9aed-aa6311f3426e

and at command prompt I see this:
root@ns dev]# df -H
Filesystem Size Used Avail Use% Mounted on
devtmpfs 34G 0 34G 0% /dev
tmpfs 34G 0 34G 0% /dev/shm
tmpfs 34G 9.6M 34G 1% /run
tmpfs 34G 0 34G 0% /sys/fs/cgroup
/dev/sda3 12T 2.5G 12T 1% /
/dev/sda2 1.1G 127M 821M 14% /boot
tmpfs 6.8G 0 6.8G 0% /run/user/1000

I’m confused at how the system sees it as 12TB instead of 6TB.
I have another server which also has incorrect space allocation and I would like to know if I should do something ot it should work out of the box.

thanks for any advice.

@BrianD - I think for 3 spindles set up as Raid5 (Parity) the usable space is supposed to be 12TB.

might help.


ok, thanks. I obviously know nothing about the structure, so will need to dig deeper
thanks for the link

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.