Microsoft Recall is now an explorer.exe dependency
TLDR:
Windows 11 v24H2 and beyond will have Recall installed on every system. Attempting to remove Recall will now break some file explorer features such as tabs.
NAS is just a Linux machine with fancy storage.
(I know thats technically not an accurate statement but Im standing by it, I know what I said)
But for a one-time backup of one pc you just need a disk tbh - and even that one can be the single one in your current pc if you are able to make a partition for either backup or for Linux.
Like, space permitting, just carve our a partition & transfer there what you would to NAS (or external disk drive, or an additional drive connected to the pc).
If space is a bit tighter just carve out the few gigs needed to install Linux on that (nowdays for most users "it's fine"). Then must boot into Linux & use the rest is the drive as is.
Ofc if you have full disc encryption, raid etc this solutions are slightly more complicated.