Well I just checked that. Here is a copy of the log from the source servers interface that connects to the second SAN. All the identifying info has been removed of course.

eth6 Link encap:Ethernet HWaddr
inet addr: Bcast: Mask:
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1914064650 errors:0 dropped:0 overruns:0 frame:0
TX packets:3948037088 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:209010884275 (194.6 GiB) TX bytes:5901393956807 (5.3 TiB)

Here is a copy of the log for the interface on the second SAN:

ncap:Ethernet HWaddr
inet addr: Bcast: Mask:
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:372937392 errors:0 dropped:0 overruns:0 frame:0
TX packets:205165134 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:541926660966 (504.7 GiB) TX bytes:21169516242 (19.7 GiB)

So near as I can tell there are no collisions, errors, drops or anything.