ReFS. Using eSATA PCI-e card connected to a synology = 6Gbps?

[Wallachuck]

NTFS formatted backup repository disk is far too slow for Veeam merging

Need to use ReFS but only have option for external storage.

However:
a) iSCSI too slow as only 1Gbps switches and 1Gpbs NIC.
b) USB3.x not compatible with ReFS as it's removable storage and not supported.

So how about:

1. Buy a eSATA 6Gpbs PCI-e card in the server
2. connected to Synology DS720+ through the eSATA port
3. Format the disk to ReFS

Would that work at the full 6Gbps?

[tyler.jurgens]

In theory it should work, but my words of caution when it comes to ReFS is to make absolutely sure you are following Microsoft's HCL for storage adapters.

If you are buying hardware anyway, get some 10 Gbps NICs and a 10 Gbps NIC for your synology (if supported).