Enable CDP advertising – help the network team help themselves!

A customer of mine requested help in documenting which switch ports were connected to ESXi hosts. Rather than simply documenting this which may get out of date if not maintained, I instead suggested we enable CDP advertising on the vSwitch level, in order for the network team to be able to obtain this information themselves … Continue reading Enable CDP advertising – help the network team help themselves!

vSphere 6.7 U1 GA released! Release notes & downloads

VMware have finally bestowed upon us their latest release of vSphere 6.7 - Update 1! This brings with it some rather welcome new festures and quality-of-life tweaks: Migrate vCenter with Embedded PSC *between* vSphere domains, retaining data such as tags & licences. vCenter can provide relevant links to KB articles Burst filter to protect vCenter … Continue reading vSphere 6.7 U1 GA released! Release notes & downloads

vCheck – Could not establish trust relationship for the SSL/TLS secure channel

Firstly, if you are not using vCheck in your vSphere environment, hop on over to Alan Renouf's blog where you will find vCheck - a community driven free set of PowerCLI vSphere environment checks that will generate a nice report (now with the new Clarity html5 client theme!) to be emailed out to you before … Continue reading vCheck – Could not establish trust relationship for the SSL/TLS secure channel

Poor performance of highly specced VMs – vNUMA!

The scenario:Database server with 10 vCPU and 192 GB ram Physical host with 2 sockets of 10 cores, 265GB RAM total Customer was reporting poor performance of their database server, an initial browse of the configuration seemed to show it had been configured well. Multiple paravirtual scsi adapters, enough CPU/RAM for the workload, storage performing … Continue reading Poor performance of highly specced VMs – vNUMA!

CPU incompatible adding host to cluster after patching for Spectre/Meltdown

Interesting problem here. Customer was adding some new hosts to an existing cluster, but got this error: Move host into cluster The host's CPU hardware should support the cluster's current Enhanced vMotion Compatibility mode, but some of the necessary CPU features are missing from the host. Check the host's BIOS configuration to ensure that no … Continue reading CPU incompatible adding host to cluster after patching for Spectre/Meltdown