Agreed with Dunuin, also don't forget to delete unused disks from a vm that was moved from one storage to another. Check the VM hardware and LXC resources menus for each guest to see if there are any "unused" (original before moved) disks, when moving PVE safely copies but does not delete until you tell it to.
To further Dunuin's point, I would keep local-lvm to run VMs on and then backup to that additional SATA. Both NVMe and SATA are reliable but performance will be much better on NVMe, especially random IO. Last point to make, always monitor Disks menu under your PVE node to keep an eye on "Wearout" to tell when the SSD is dying / at the end of its lifespan.
Cheers, glad you learned a lot after recounting by the way.
Tmanok
To further Dunuin's point, I would keep local-lvm to run VMs on and then backup to that additional SATA. Both NVMe and SATA are reliable but performance will be much better on NVMe, especially random IO. Last point to make, always monitor Disks menu under your PVE node to keep an eye on "Wearout" to tell when the SSD is dying / at the end of its lifespan.
Cheers, glad you learned a lot after recounting by the way.
Tmanok