Hi,

I installed ScaleIO with MDM IPs, SDS-SDS Only IPs and SDS-SDC Only IPs.

Those 3 networks are in separete segments like 10.0.0.0/24,10.0.1.0/24 and 10.0.2.0/24.

The problems here is

When SDS-SDS Only network is down on the Master MDM node, Then Master MDM thinks the all SDSs dead.

So no App I/Os are possible till Master MDM is manually switched.

*In this case Master MDM does not failover(I tested more than 10 times)

An solution is

Add another SDS-SDS Only IPs so Master MDM is still communicatable with SDSs when the other SDS-SDS Only network is down on the Master MDM node.

But the number of the pyhsical IFs on the MDM nodes are few.

So I don't want to add an SDS-SDS Only IPs as long as possible.

Any possible solutions?

like make Master MDM failover when the SDS-SDS Only network is down on the Master MDM node, or to make Master MDM have the correct SDSs status.

or anything else.

Many thanks,

Taizo