I have a Lenovo m720q Tiny PC running Proxmox. It currently has a 4TB NVMe m.2 Crucial SDD (PCIe Gen3 M.2 SSD, up to 3500MB/s; CT4000P3SSD8). This is my first home lab and so I just installed Proxmox on the drive with the default ext4 format and started playing around with VMs.
After more research and reading, I was thinking of putting in another 4TB SSD to have Raid 1 ZFS which I understand is better for Proxmox and has me covered should one of the drives fail. Is this accurate? If so, my computer only has space for a SATA SSD. There is no additional NVMe slot. Does it matter which SATA SSD I get or would any one suffice? I was looking at the Crucial MX500 4TB SATA 2.5 Inch Internal SSD (up to 560MB/s; CT4000MX500SSD1). Are there any issues as one is NVMe and one is SATA? Also, it looks like the SSD speeds are different.
If you’re ok with blowing away Proxmox and starting fresh then yes, that’s something you can do.
I will be doing the same on a Dell miniPC soon but with smaller SSDs.
Yes, that’s possible and it will protect against a drive failure. But of course, you’ll get the speed of the slower drive. Also, keep in mind that RAID is not a backup.