VROC and PCI-e lane question

[brighttail]

So I'm hearing that VROC will be able to be utilized with third party NVMe drives to create a RAID 0 drive, so long as it is non-bootable.  Only Intel drives will be able to RAID  using VROC and be bootable. Okay fine.

 

My question tho has to do with PCI-e lanes.  If I have a 28 PCI-e lane CPU and put two NVMe drives in RAID 0 using VROC, do I lose 8 of those PCI-E lanes or do I still have 28?  I thought I read somewhere that the number of the PCI-e Lanes are determined by the CPU but are managed by the Chipset, so VROC may not take PCI-e lanes away.

 

Seems odd if true, but VROC is new and I'm not 100% sure on it.

 

I ask cause I have a 1080ti and 4 M.2s so I'm not sure if I would need a 28 or 44 lane CPU. 

 

Thanks in advance.

[brighttail]

Just now, CUDA_Cores said:

I suspect it 4 M.2 drives and a GPU would play nicely with 28 lanes. Your drives will likely take away 16 lanes leaving only 12 lanes for the graphics card but that is fine as video cards still work fine on PCIe 8x. 

So VROC then still takes away PCI-e lanes?  I suspected that it would but wasn't 100% sure. 

[brighttail]

Just now, CUDA_Cores said:

Yes, I believe they are wired directly to the CPU, that is what makes VROC unique is it no longer has to go through a chipset. 

I am sorry but I still am asking, will it take away PCI-e lanes?  Will two M.2s running at x4 speed take 8 lanes away from the overall PCI-e count or since it is VROC going directly the the CPU the # of PCI-e lanes remains untouched?

[brighttail]

Thank you. That is what i figured but I had seen some posts that obviously that didn't make sense.

[NrKj105]

i have an x99e ws+ e5 1620 v3 xeon and 2x sm961's in software raid
vroc has been available in servers for years

its basically a key that you   enter in your mobo to cancel some sata ports   to enable hardware raid

bootable pcie raid is not possible with x99
you can use freenas or unraid to create a bootable pcie raid solutions
but i use the m.2 slot thats connected to the pch and im happy with it