Monthly Archives: January 2013

Cisco’s Answer To VXLAN’s IP Mulitcast Requirement

Cisco announced this week enhancements to its Nexus 1000v virtual switch, which will allow VXLAN to be implemented without requiring IP Multicast.  Why does this matter and what may it mean to the current IETF standard for VXLAN? IP Multicast as a requirement for VXLAN has long been cited as a barrier for deployment in […]

Book Review: The Phoenix Project Aka. Karate Kid Meets DevOps

I just finished reading The Phoenix Project by Gene Kim, Kevin Behr, and George Spafford and it is one of the most thought-provoking IT books I’ve read in recent years.  For those who are not familiar with the authors, Kim, Behr, and Spafford are well-regarded luminaries in the DevOps world and co-authors of another book, […]

VMware vCloud Director Integration with Cisco Intelligent Automation For Cloud

In an earlier post, I provided an overview on how VMware’s vCloud Director (vCD) integrates with vCloud Automation Center (vCAC) in the Enterprise version of their vCloud Suite.  In this post, I want to take a look at how vCD integrates with the Cisco Intelligent Automation for Cloud (CIAC) Suite.  This is particularly relevant in […]

Quick and Dirty Storage IOPS Calculator

In an earlier post on “General vSphere Sizing,” I mentioned a storage IOPS calculator I had hacked together to help me with Vblock storage designs.  I used an earlier version of it to illustrate different scenarios in my post on “Application Sizing Assumptions.”  I’ve finally gotten around to posting the latest version and you can […]

The Integration Of vCloud Director with vCloud Automation Center

As I’ve been speaking with various customers about the benefits of VMware’s new vCloud Suite on the Vblock, one persistent question that I’ve been receiving is this – “Is vCloud Automation Center [aka. DynamicOps] eventually replacing vCloud Director and if not, how do the two work together?”  That’s a fair question given that the two products […]

When 60 SCSI Devices Are Not Enough: Virtualizing Databases On vSphere 5.1

I came across a particular issue with several customer last year who were looking to virtualize their databases on vSphere; they ran into the long-standing limit of 60 SCSI devices per virtual machine.  For those who are unfamiliar with the 60 device limit, you can refer to the “vSphere 5.1 Configuration Maximums Guide,” which lists […]

Word Of Caution About Overextending The Use Of VXLAN

*In light of the clarification, by VMware, that VXLAN is not required for vCloud Connector Datacenter Extension (DCE), I took content from my original post to create this post discussing VXLAN. VXLAN Virtual eXtensible Local Area Network (VXLAN), is a network overlay and tunneling technology, co-authored by VMware, Cisco, and Arista Networks as an IETF […]