Hi, i plan to expand an existing 2-node stretched cluster with 2 additional hosts to a 2+2+1 configuration. I did not find an official path or documentation of this extension.
Regards
@mike-p , it is the same process as expanding any stretched cluster - configure the hosts with vSAN network, add them to the vSphere cluster, put them in the existing Fault Domains and create Disk-Groups.
One thing to be aware of is licensing as while a 2+1 or 1+1+1 cluster only requires a vSAN Standard license, 2+2+1 or bigger requires vSAN Enterprise/Enterprise+ .
@mike-p , it is the same process as expanding any stretched cluster - configure the hosts with vSAN network, add them to the vSphere cluster, put them in the existing Fault Domains and create Disk-Groups.
One thing to be aware of is licensing as while a 2+1 or 1+1+1 cluster only requires a vSAN Standard license, 2+2+1 or bigger requires vSAN Enterprise/Enterprise+ .
Thanks, this information is exact what i am looking for.
Do you know if it ist ok if the added hosts are not exactly sized like the existing? I will use the same model but less memory and capacity.
Regards
Sure, that is all fully supported, both for vSAN as well as vSphere. But do keep in mind that from an operational perspective and a vSphere HA point of view it may complicate things.+
We have only PFTT=1. On both sides will be the same resources availlable. Even if one of the larger hosts fails the access to a copy is accessible. What kind of problems can occur?
As long as you have the resources, and take in to consideration that the largest hosts can fail, than you are good 🙂