Weird RAID configurations for redundancy

[Predis]

Let's say I have 10 drives of 6 TB each and want to make sure the storage is safe. Can stripe/raid0 5 pairs of them to make 5 pairs of 12TB and then mirror/raid1 them so that all 5 pairs have the same data on them? i would be happy with 12 TB storage and still have data even if 4(worst case) - 8(best case) drives fail.

Yes, this is overkill. Yes, I'm paranoid. Yes, I have geological redundancy as well. I'm just curios about this in Proxmox.

 

[waltar]

Yes, this kind of weird raid configuration is possible doing via zfs (mirror), mdadm (raid01) or combination of "hw-raidctrl with mdadm (raid01)" while is nothing special to proxmox because possible in each linux ... but if it's really recommended is another question to have 5 times same data.

 

[VictorSTS]

You can do this with ZFS, albeit manually (not from webUI). You could also create 2 5-way mirror with 5 disks each, then create a RAID0 with those two vdev. Something like choosing stripping "vertically" or "horizontally". No idea on how it would perform speed wise.
I let to you to decide if that level of redundancy makes sense or not i.e. I would prefer to have another computer and use zfssend/zfsreceive to cover the case where the PSU or mobo kills all disks at once

 

[ness1602]

Maybe in paranoid case you can go with raidz3, so that 3 disks can die? And set up spare .