Lessons Learned: Dell PowerConnect 5524 switches and vSphere 5.

Some time ago, I configured a pair of Dell PowerConnect 6224 switches for iSCSI storage network and wrote a small blog post about the configuration. This time I had a chance to work with the Dell PowerConnect 5524 switches which were also used for an iSCSI storage network. These switches are cheaper and a bit less powerful than the 6224 series but still good for a small, dedicated iSCSI network. Before you begin with the […]


Preparing Internal Flash Cards on Dell R710 for ESXi 5.x Installation.

On my last project I worked once again with the Dell PowerEdge R710 servers but this time the customer followed our advice and purchased the servers with internal 2 GB flash cards. Auto deploy would of course be more awesome 🙂 but due to the limited knowledge of vSphere at our customer, we decided to go with the flash cards. During the installation of ESXi 5.0 I noticed something unusual. The flash cards were detected […]

ESXi 4

Troubleshooting IP-Hash load balancing on a NFS storage network.

When configuring a NFS storage network at one of our customers some time ago, I noticed that the ESXi host wasn’t utilizing all NICs assigned to the NIC team for the VMkernel traffic. After some research, I have found this article written by Frank Denneman a while ago and this VMware KB document. According to the blog post and the article mentioned above, this issue may occur if the calculated hash returns the same result […]


Book review: VMware vSphere 5 Clustering Technical Deepdive.

The VMware vSphere 5 Clustering Technical Deepdive book has been published a while ago and probably most of you already read it. I purchased the book right after the release and I was reading the book really slowly due to some time management issues. Today, I have finally finished reading this awesome book that was written by Duncan Epping (@DuncanYB) and Frank Denneman (@FrankDenneman) and now it’s time for a little review. This book consists […]