Hello,

I have a FAILOVER/iSCSI configuration running with 2 XenServers for a customer.
I noticed a few times that when the Secondary Unit reboots, crashes or when I uncable it... There is NO more diskactivity on the Primary unit. I just don't see the lights of the disks on the Primary unit blinking anymore... As soon as I reboot the Secondary or plug it's cables again... The disk Activity on the Primary continues.
I think it buffers all writes because it couldn't get an acknowledge from the secondary unit,.. and so it doesn't give a acknowledge back to the Xenservers/VMs. However.. if that's really the case, it's pretty dangerous because then I would be dependent on the running/failing of the Secondary unit.

Is this normal behaviour?

Kind regards,

Roel Broersma
OECE