@dustinb3403 said in Small colo infrastructure for SaaS:
I would recommend an approach like Host A - Master, Host B slave - NLS backup target
Host A performs continuous replications to Host B, as well as Host A backs up to the NLS host on a different schedule.
Should Host A go down, everything is on Host B with a quick startup and you're off to the races.
You'd still have your separate backups to recover from should something even worse occur.
I like this solution too but I don't like to have one host just in standby because we get better performance if half the VMs are on Host 1 and they can share CPU and storage resources there and the other half on Host 2.
For the VMs that need replication, we might just as well have replication going in both directions between the hosts, instead of just one direction. Don't you agree?
BTW, can you setup continuous replication without XO, just using xencenter or with xen itself?