Hey, I’m back with more home server questions. :)

I’ve got a laptop running as my home server. I have previously removed my CD drive to add an HDD caddy for a total of two hard drives - a SATA SSD and a SATA HDD.

Now, I’m running out of storage a little, and I have a spare HDD that I’ve currently hooked up to my desktop PC that I could connect to my server. What are my options here?

I’ve found HDD adapters that you can connect via USB. But what are the read/write speeds for these and would they sufficient for a server? Or should I invest in some kinda hard drive bay that allows for multiple hard drives to be slotted into and connected (is that a NAS?)?

Open to any input here, preferably tge cheaper the better.