I was reading an excellent article on NetApp metroclusters and vm-host affinity rules Larry Touchette the other day. That article is based on the tech report TR-3788 which covers the full solution but did not include the 4.1 enhancements. The main focus of the article is on VM-Host Affinity Rules. Great stuff and it will “ensure” you will keep your IO [...]

An often asked question when implementing NFS based storage is what do these advanced settings represent you are recommending me to change? VMware published a great KB article which describes these. For instance: NFS.HeartbeatMaxFailures The number of consecutive heartbeat requests that must fail before the server is marked as unavailable. The KB article does not only explain the separate NFS settings but also [...]

I was just reading the excellent whitepaper that NetApp just published. The paper is titled “VMware vSphere multiprotocol performance comparison using FC, iSCSI and NFS“. I guess the title says enough and I don’t need to explain why it is important to read this one. I read the paper twice so far. Something that stood out for me is the [...]