For years, I have dismissed Virtual Machine Hardware version as unimportant. In fact, in this very blog, I may have advocated for leaving VM Hardware Version set at 8, to maintain full compatibility with both the vSphere C# Client and the vSphere Web Client.
Unfortunately, thanks to Spectre and Meltdown, things have changed. Updating your VM Hardware Version also updates the VM BIOS, and that’s an important part in the remediation of Speculative Execution Vulnerabilities, specifically: CVE-2017-5715 ‘Spectre Variant 2’. Continue reading
If you have ever wondered when it time to upgrade VMware vSphere; you might want to consider the experience of the unfortunate and unwise early adopters of vSphere 5.1. The time to upgrade is clearly NOT the first public release of any new version of vSphere! Continue reading
Unlike in previous releases, VMware took a good long time getting vSphere 6 ready. For the first time ever, VMware made the Beta version of vSphere 6 publicly available (all you had to do was sign-up) and was actively soliciting input on the Beta forums.
The initial public release of vSphere 6 (3/12/2015) was, nonetheless, plagued with at least one critical issue and several annoyances. The most critical issue affecting vSphere 6 was that Changed Block Tracking (CBT) appeared to be essentially broken, rendering most forms of backup using the vSphere API for Data Protection useless. This and other less significant issues rendered the initial release of vSphere 6 unsuitable for use in production environments, and I recommended that all users hold off on upgrading until these issues had been resolved. Continue reading