Proxmox CEPH Cluster's Performance

[Alwin]

• Remove my server on my cluster
  
  
• Remove all RAIDs from the HP Smart array P440ar

• Switch HP Smart array P440ar controller to HBA MODE

• Redo all my Proxmox installation on the server from the installation CD

• Re-integrate the server into my cluster

• Redo my CEPH storage then

Correct.

However... I'm going to have to install Proxmox on a single disk and not in RAID and that... that sucks !

That's why you can use ZFS, as it also manages that. You can also install a Debian 9 (use your storage layout) and install PVE from there.
https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_Stretch

Why, in the Proxmox setup, it is not possible to create a Linux RAID (mdraid) to be able to put the "/" on i t ?

Well, you can, see above. But I don't recommend it, as it is likely to corrupt data (from my experience).

 

[Dubard]

That's why you can use ZFS, as it also manages that.

You mean that from the setup... you can choose to use the 2 disks I have assigned to the "/" in ZFS storage and continue installing Proxmox on them ?

 

[Alwin]

You choose, ZFS mirror and select two disks you want to use during setup.

 

[Dubard]

OK...I'm going to test this this afternoon on a server. Thank you very much for all your valuable advice.
I'll keep you posted on my installation.
Thank you again !

 

[Dubard]

Hi everybody,

I'm here to give you my news...

I managed to do my Proxmox VE 5.1 installation on my HP Smart array P440ar controller
in HBA mode (read my post at HP for the transition to HBA mode).
For my another server with HP Smart array P410i it is not possible to switch it to HBA mode,
i must consider to create RAID0 per disk
I then encountered a problem with the UEFI boot that I described here and which has been solved

Thank you very much to everyone for your help