Truenas disk config

TrueNAS General
1

Dear TrueNAS community,

I’m very new to TrueNAS and could really use some guidance.

I currently have the following drives:

  • 1 × 6 TB (A bit on the older side)

  • 3 × 1 TB (Bit older, used for NAS storage in the past)

  • 1 × 3 TB (Really new)

I’d like to run them in a RAID setup to reduce the risk of data loss, but I’m not sure what the best or safest configuration would be with these mixed sizes.

What RAID (or ZFS) layout would you recommend, and what are the pros and cons of with this drive combination?

Thanks in advance for your help!

2

Forgot to mention, but truenas is running as a VM in proxmox

3

Do you have a HBA and are you passing through the entire controller in Proxmox and blacklisting it so Proxmox won’t touch ZFS?

I would stay away from Proxmox if you don’t set it up as a ‘Production’ system and go bare metal TrueNAS

Your two pools, or three pools, would be a Raid-Z1 VDEV of 3 x 1TB drives
and a Mirror VDEV of 3TB + 6TB (give 3TB space)
or a separate VDEV and pool for the 3TB & 6TB drives but no redundancy.

All these drives must be CMR and not SMR types. Check the drive model details.
SMR vs CMR ServeTheHome

TrueNAS Docs - WD Red SMR Drive Compatibility with ZFS

1 Like
5

Thank you for the response! I don’t have a raid controller but i’m planning to just pass trough all the disk to Truenass using the guide i put in my post. Do you think that that is a good approach?

6

O wait i’m sorry but i cant post link because i’m new to this form!

7

No, you should really use controller passthrough (either onboard or LSI HBA card), not disk passthrough

1 Like
8

Could you explain why? If it helps my motherboard is a Dell 0HHV7N A00

9

because there were more then one case on the forum using disk passthrough or virtual disks that led to data corruption and data loss
For more information see:

1 Like
10

Okay, thank you, i will look in to it.