Anthony_Cheng_1
May 01, 2014Nimbostratus
LTM/GTM in a active/active Data Center design
For a active/active Data center design where there is a layer 2 LAN extension, there will be 1 GTM per DC, now the best practice is to have an Active/Passive LTM pair in each DC, but let's say for budget reason where they can only go for 2 LTM instead of 4, I know you can do active/active LTM (although again not necessarily recommended) and it is easier in 11.x with DSC and traffic groups.
But the question is what is the latency requirement between the 2 DC, at what point do I say, (e.g. beyond 10ms) that this is not going to work as active/active? Assume the LTM will run 11.x.
And slight off-topic but in looking at the LTM 4000 vs. 4200v, I notice on the datasheet that the 4000 has something called On-Demand Upgradable, what is that?