LSI 9211 IT mode SAS card or SATA ahci card, preference? Opinions?

I am wanting to build a large backup only device, to sync all my other devices too and possibly make it a proxmox or vm box too (not sure, have no decided yet) I was going to buy a LSI 9211 sas pci card off from ebay where they run about $50 or so dollars USD. I did a few searches here to make sure it would work, try to establish difference between the H200 H310 H700 cards... and I found a couple thread where people say do not buy the sas card, and go with an ahci sata card and on m

I would start form this: https://www.youtube.com/watch?v=hTbKzQZk21w https://www.youtube.com/watch?v=PeFJtjVvGyc If you got only HDD drives you can use Dell Perc H310 and flash to IT, but if you have 8 SSD I would go with something which can handle: HP H220 LSI 2308 (9205-8i) (PCIExpress 3.0) but depends if your motherboard supports it. There are several factors that determine the right choice. -your current motherboard, does it support PCI