Changing the HBA queue depths on multiple dual-port adapters

Following on from optimising the storage for a customer, I decided to change the queue depths for the Emulex HBAs. The ESX hosts, each have two dual-port Emulex HBAs, the diagram below shows the setup.. Only two ports are in use at the moment, vmhba2 and vmhba5. To determine the instance numbers that are inContinue reading “Changing the HBA queue depths on multiple dual-port adapters”

Using RCLI to configure multiple ESX 3.5 Servers

So I deal with a lot of customers on my travels, and most have multiple ESX servers and occasionally I receive the odd request for a change here and there. As you all know, with VI3 and the latest releases of ESX3.5/VC2.5, almost all configuration and most advanced configuration can be achieved by using theContinue reading “Using RCLI to configure multiple ESX 3.5 Servers”

Until Round Robin is here.. how to Load Balance over Active/Active Paths using scripts

Recently a customer had a few issues with having all VMs using the same path to the LUNs, this was down to putting too many workloads onto servers that were used as a proof of concept. Inadvertently, SAN problems arose so I was asked to checkover the storage. First a little background on the infrastructure….Continue reading “Until Round Robin is here.. how to Load Balance over Active/Active Paths using scripts”

VCDX: An overview

VCDX: VMware Certified Design Expert VCDX is not a follow on from VCP and is not currently a VAC or Partner program requirement, this should be seen as an advanced Certification and is only applicable to architects who have designed and deployed enterprise environments. The Enterprise Exam is available this month. Candidates can check theirContinue reading “VCDX: An overview”

Update: ESX 3.5 on HS21 XM (7995)

IBM came back with a workaround to my problem,….All workarounds have been tested and work. The workarounds then for anyone running ESX 3.5 Build 64607 on HS21 XM 7995 v1.08 with 2 x quad core CPUs: 1. Use ESXi instead (No service console, hence no PSOD. Also no mouse services in the console needed, henceContinue reading “Update: ESX 3.5 on HS21 XM (7995)”