SoftRAID Ubuntu Server?

Question

RAID

Hello!
We have:
A computer in which there are 5 pieces of WD40EZRX, 4 TB each.
It is necessary to put Ubuntu server on this configuration in order to have 20 TB of storage.
Who was engaged in a similar setup of a software raid array on a server ubunt share your experience?

Answer 1

The problem was that you can’t put Grub on GPT without pain, because it is put only on MBR (disks up to 2TB). They thought for a long time and were stupid, but decided to do it simply: they took another 500GB hard drive and put the system there, and the RAID was simply beaten up.
@nikweter but somehow we didn’t even think about LVM. Can you share your experience?
Thanks to all!

Answer 2

https://help.ubuntu.com/community/Installation/Sof...
20tb without reservation? Does your task exactly allow such use?
JBOD or RAID0 will give you that capacity on your drives. Disk dropout - loss of all data on this volume or all data, respectively, for jbod and raid0

Answer 3

The system itself can be put on a flash drive, or you can extract 2-3 gigabytes from one of the hard drives if you can’t put the system on the array itself.
Personally, I recommend RAID5, at least some kind of fault tolerance will be. And you need to buy 1-2 more of the same disks in reserve when one of the workers fails.
I had LVM, so I moved to RAID without any problems even without rebooting the system.

Answer 4

If you absolutely do not care about fault tolerance, then look towards lvm. Create a volume group, include all disks in it, and make the volume 100% disk space. True, you still need to put the root somewhere, so you have to make 2 lvm volumes, one for the system, the other for storage. But keep in mind that if there are problems with at least one disk, you will lose all the information.