NIC metric

[mwo]

Hi.

I run a Windows Server 2019 test cluster with 2 nodes. For StarWind ISCSI I reserved one 10G and one 1GB line via 2 different switches. When I sync a test volume, the 1GB line is loaded to 100% but the 10G line is only used around 500Mbit. I changed the interface metric to favor the 10G but with no effect. MPIO is activated with LQD. Any ideas how to move the traffic to the faster line?

Thanks.

Martin

[yaroslav (staff)]

Starwind VSAN uses round-robin to synchronize, so using links of different bandwidth gives yoj a half of performance.
Speaking of the iSCSI network, try using round-robin with the subset with the favor to 10 GBE link. Note that system performance is not only about network performance, but also storage and Initiator performance.