Short story: Can I replace the new vCenter 5.1 iPXE boot with good old vCenter 5.0 PXE? Yes you can !!!! I called on twitter for help for someone to send me the contents of their AutopDeploy 5.0 FTPRoot directory and I promptly received a response from Roman ( @medea61 ). After placing the AutoDeploy […]
esxi
Important info on vSphere5 VAAI for EMC VNX / CX4
When creating a design for our new vSphere 5 environment I found some strange mismatches in supported configurations. Turns out VAAI is supported on VNX and CX4 when used in a vSphere4 environment, but the CX4 has no VAAI support when used in a vSphere 5 environment. VMware suggests disabling VAAI at ESXi level when […]
Dependent hardware iSCSI adapter on ESXi5
Most customers I work with use FC connections to their EMC storage we’ve sold them, but today I was with a customer who has a complete DELL setup and used iSCSI to connect to their Dell Equallogic PS4000E storage over a set of Dell PowerConnect switches. I was asked to configure the dependent hardware iSCSI […]
How too many vCPUs can negatively affect performance
Customer with small vSphere environment of just two hosts had performance issues and they asked me to investigate the situation. When looking at the technical specs at first glance, you would suspect that this configuration should work. With just two hosts, each dual Quad core CPU, the enivornment had a total of 16 CPU cores. […]
Adding ESXi host with dvSwitch through Auto Deploy fails
Been fighting some problems with VMware Auto Deploy lately which turned out to be an easy to solve issue. I installed the first host in the cluster, which would NOT be deployed with Auto Deploy but had a local hard disk in it. Configured it the way I like it, set all the logging and […]