Shurik
Nov 27, 2020Altostratus
Redundancy Between two Data Centers
Hello guys,
I working on a new solution for the client. Client will be connected with two MPLS circuits to primary data center (A), and another two MPLS circuits to stand by data center (B). I would like to failover to B only if it's necessary (big outage in A or maintenance).
There will be layer2 between A and B (for different VLANs, like SQL replication, application, LTM network etc.). All LTM appliances will be virtual.
I have two questions please:
- Could I have a cluster with 4 LTMs (2 in each location), and in case of ESX/VM/storage/etc. failure, the virtual IPs will be moved to B LTMs? (all traffic will go over layer 2 circuit between two location.
- I had a quick conversation with someone from f5, he mentioned that it's not a good idea to create one environment from two different locations. Do you know what is the downside or potential problems?
Is there a better way to design it? The most important factor here is that the environment will be highly available (99.97% or more)
Thanks for your input!