Add different sized drives in the future & use 100% capacity, similar to SHA-1 from Synology?

[DaveBetTech]

I've been contemplating buying Synology specifically for SHA-1 + BTRFS to accomplish the 3 bullets below. I was hoping HexOS would support something similar:

1. Ability to add different size drives in the future
2. Use 100% of the new drive - e.x.: have 2x10tb & 2x18tb then buy & add a 20tb, using 100% of all the drives.
3. Bit Rot protection

[DaveBetTech]

Apologies if the above wasn't clear. Couldn't figure out how to edit. I was asking if HexOS could do the same as Synology's SHA-1 w/BFTRS, specifically be able to add diff sized drives in the future and use 100% of the capacity. Wanting to future proof a solution and save a buck.

[Magnus]

Hi there! HexOS is based on TrueNAS Scale and uses ZFS. I'm a designer not a developer but as far as I know, its not possible to utilize different sized disks (the smallest would dictate the size).,

[DaveBetTech]

On 12/5/2024 at 5:57 PM, Magnus said:

Hi there! HexOS is based on TrueNAS Scale and uses ZFS. I'm a designer not a developer but as far as I know, its not possible to utilize different sized disks (the smallest would dictate the size).,

Rats! I was hoping HexOS would match Synology’s SHR with Btrfs flexibility. I want/need to mix drive sizes and fully utilize new capacity for future upgrades. It’s unfortunate (for me) that ZFS limits usable space to the smallest drive.

Thank you for replying @Magnus.

[Atropos]

TrueNAS Scale will allow you to use different capacity drives. For example I have a 14, 14, 14, and 16tb drive setup and it works in Scale (last drive is effectively only) 14tb.

Sadly HexOS will not include my 16tb drive and will not allow me to manually set it so I'm essentially stuck and reloading TrueNAS on the boot drive.

[Bassfiend]

Did did ask this a while ago and the reply I got was encouraging (although understandably non-comittal) rather than dismissive ...

 

[markrieder]

On a Btrfs based system this is possible. Check out Unraid and it even supports the ZFS plugin. If the ZFS system supported the Btrfs plugin, it would be possible. In that case, I would be prompted to choose between ZFS and Btrfs when creating the pool. That would be a breakthrough solution.