[PVE-User] mirrored ZFS boot with SATA SSD & NVMe PCIe SSD?

Arjen leesteken at protonmail.ch
Thu Apr 15 17:51:57 CEST 2021


On Thursday, April 15th, 2021 at 17:43, Lindsay Mathieson <lindsay.mathieson at gmail.com> wrote:

> Setting up a home server (NUC i5) and it can only take a 2.5" SATA drive
>
> and a NVMe PCIe SSD - but I would really like a mirrored ZFS boot.
>
> Is it possible (and safe?) to use a 512GB SATA SSD and a 512GB NVMe PCi
>
> SSD in a zfs boot mirror?

It should work fine but the write speeds (and fsync/sec) will typically be the slowest of the two.
I use a NVME M.2 mirrored by two SATA drives for my VMs, which I think is quite similar.
Older systems sometimes cannot boot from NVME (PCIe). You might want to make sure, otherwise the redundancy won't help if the SATA one fails.




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