Cluster network configuration

robnicholson · Tue Jul 22, 2014 2:58 pm

I asked this same question in a thread what was sort of mixed up with StarWind clustering versus Windows clustering so I'll break it out into a separate question. I'm trying to understand what is actually being asked when you see the attached screenshot?

10.14.31.x is the LAN
192.168.1.2 and 192.168.2.2 is the network dedicated to the SAN - typically the network over which MPIO would be used

(This is all lab work BTW)

I think I know what Sync is - the network over which the mirroring traffic will travel? Ditto heartbeat - the network over which the "Are you still there" heartbeat tests are carried out? Is my understanding correct here?

So in my lab, I'd probably put the heartbeat across 10.14.31.0 and the sync over the two 192.168.1.0 & 192.168.2.0 networks.

However, if I check "Heartbeat only" against 10.14.31.0 and "Sync" AGAISNT BOTH 192.168.1.0 AND 192.168.2.0 and click Next it reports:

Select "Networks for Synchronisation Channels"

I end up having to check some other combination but to be honest, haven't a clue what I'm doing. As pointed out before, the video to help you set this up has a different interface that has only two options so that doesn't really help.

I ended up using 10.14.31.0 for heartbeat and 192.168.1.0 & 192.168.2.0 for "Sync and heartbeat" and left "Sync" unchecked but I have a clue what I'm actually setting up here.

Cheers, Rob.

robnicholson · Tue Jul 22, 2014 2:59 pm

Just to confirm - the screenshot above doesn't work.

Cheers, Rob.

robnicholson · Tue Jul 22, 2014 3:00 pm

But this configuration does work.

Cheers, Rob.

Wed Jul 23, 2014 4:29 pm

Thanks for sharing that.
We`ll remove synchronization only option in next update of Virtual SAN build.

robnicholson · Thu Jul 24, 2014 12:30 pm

BTW - when you go through manually setting up a HA cluster (i.e. create two images on each SAN then use replication manager to glue them together), the dialog around networking that pops up there just has two columns for sync & heartbeat which makes much more sense.

I suspect that considering the video of the create cluster wizard shows just two columns as well, somebody added in that third column quite late in the day but didn't finish the functionality

Cheers, Rob.

Mon Jul 28, 2014 3:36 pm

Agree!

Thanks for bringing this question to our attention:)