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Showing posts from January, 2013

Metro Clustering on VMware

References
vSphere Metro Storage Cluster white paper released! Stretched Clusters and VMware vCenterTM Site Recovery Manager
VMware KB: VMware support with NetApp MetroCluster VMware KB: vSphere 5.x support with NetApp MetroCluster

Been encountering a lot of questions on Metro clustering on VMware as well as active-active data center setup.  I would like to bring this out to help anyone who is consider doing a metro cluster to understand what are the main requirements and the cost involved as well as the scenario cases which need to be understand before you make that decision.

Many wanted to do a stretch cluster mainly to meet a active-active data center setup.  Some wanted to have a a easier disaster recovery.

I must clarify some misconception here.  Metro clustering is Downtime Avoidance (DA).  It is not disaster recovery (DR).  DR has a downtime to recover.  Metro clustering is a active active setup for near zero setup if storage is synchronization.

Some realistic facts:
Metro clusteri…

VMware Multi-Core Pricing & Licensing Policy

I am been called up today on my off day but am not complaining.  It got be to refer to my own post awhile back here in August after VMworld 2012 on the licensing on vSphere 4.x.

VMware actually updated the EULA on multi-core licensing and pricing which you can refer here.  This has been quite while back.

There is no reason why anyone would still insist to setup a new vSphere environment based on vSphere 4.x with all the limitation and functions set.

I think the new EULA multi-core policy would explain for those who are still using vSphere 4 and have a new hardware which exceed your vSphere 4.x edition license entitlement which is pretty common having that most of them are 8 cores and above now.

The policy give you a very good example.  I share just explain this with one scenario I was asked today.

I have purchased 4 x vSphere 5.x Enterprise Licenses for a server with 4 CPU of 8 cores each.  I downgrade them to vSphere 4.x Enterprise.  So vSphere 4.x Enterprise is limited to 6 cores p…