Building new Unraid server, help with cache pool wanted

[Kopernikus]

Hi,

 

Finally decided to ditch my Synology NAS and build an Unraid server.

I got an Gigabyte Z590M motherboard / Intel 11700 / 2X16GB RAM in a Node 804 case.

For the storage I will reuse my 5 WD Red drives (each 6TB).

 

The only thing left to buy are 1 or 2 Nvme SSD's for the my cache pool.

The motherboard has 2 M2 slots, one supporting Pcie 4 and the other Pcie 3

 

So now my question:

 

Do I buy one Pcie 4? And what size would be fitted for my setup?

 

Or do I buy two to put them in RAID1?

If so do i buy 1 Pcie4 and 1 Pcie3? Or better 2 Pcie3? And what size?

 

Thx in advance for the help!

Edited August 9, 2021 by Kopernikus