Setting Perennial Reservations for MSCS with EMC CX/VNX Arrays

A few months ago I was putting together a technical solution to support a vSphere upgrade (physical hosts and vSphere version) and a SAN upgrade, As part of the upgrade, the customer wanted to virtualize their file services as well. The customer wanted the same level of availability and redundancy in the virtual environment that they had in the physical …

Jumbo Frames and Multi-NIC vMotion Performance over 10Gbe – Part 2

A week ago I wrote a post as sort of a follow-on to Chris Wahl’s post on performance gains (or lack thereof) using jumbo frames for multi-NIC vMotion. A fellow blogger, Josh Odgers (blog / twitter), posted a comment stating more testing with the same workloads across tests would be interesting to see. In my previous testing I performed 3 …

Jumbo Frames and Multi-NIC vMotion Performance over 10Gbe

Chris Wahl recently wrote a blog post titled Do Jumbo Frames Improve vMotion Performance? Chris was doing these tests using a 1Gbe network and the results indicated that you get slightly better performance by NOT using jumbo frames. There were a few comments and questions regarding what this would look like if you had a 10Gbe infrastructure. I also had …

[Book Review] VCDX Boot Camp: Preparing for the VCDX Panel Defense (Rough Cuts version)

Since I plan on submitting my VCDX application in time for the VMworld 2013 deadline, I thought it would be a good idea to take a look at the VCDX boot camp book. While the book has not been officially released, there is a “rough cuts” version of it available right now via Safari Books Online (you can find it …

vSphere 5.1 SSO and Cross-domain Authentication

Last week I was installing vSphere 5.1, which includes the SSO component in an environment with a Forest domain and many child domains. I noticed some very strange behavior when setting up permissions within vCenter when using universal security groups that existed at the forest root domain, but had members from child domains. I submitted an SR to VMware and …