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ESXi 4

How to: Backup and restore ESXi configuration using vMA

A quick blog post about backing up and restoring the configuration of your ESXi hosts. It will shorten your recovery time when something goes wrong during an upgrade or in case of hardware failure and you want to restore the configuration of your ESXi hosts as soon as possible. Here are the steps to perform a back-up and restore of your ESXi host. Backup SSH or login to the vMA. Add the host as target […]

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 […]

Dell

Install Dell OpenManage on ESXi 4.1 using vSphere CLI or vMA.

Here is a quick step-by-step guide on how to install the Dell OpenManage software on an ESXi host using the VMware vSphere Command Line interface (vSphere CLI) or the VMware vSphere Management Assistant (vMA). After the installation you’ll have to enable the CIM OEM provider so you can manage the host with Dell OpenManage Server Administrator. Before you begin make sure you have the following: VMware vSphere CLI installed on your system or VMware vMA […]

Dell

Dell PowerEdge R710 BIOS settings for VMware vSphere 4.x.

Recently, I was involved in a big infrastructure refreshment project for one of our customers across different locations in Europe. The old hosts were replaced with the brand new Dell PowerEdge R710 hosts with Intel X5650 processor and 96 GB of memory. All hosts were installed with the vSphere Hypervisor (ESXi). Here are some best practice BIOS settings that we used during the project. Power on the server and press F2 during the initialization process to […]

ESXi 4

Boot ESX 4 from SAN on a failover LUN – Lessons learned.

Is it possible to boot an ESX 4 host from a LUN that has been “failed over” to another physical location? Yes, it is possible but there are some serious caveats by doing this. Please consider the following scenario: 2 datacenters: site A production (active), site B failover (passive) In each site an identical SAN array; LUN mirroring between the 2 arrays through a dedicated Fiber Channel link In each site 2 identical ESX hosts and […]