vCloud Director 9.5 Hands On

vCloud Director 9.5 was released a few weeks back and it’s now time to look into upgrading as well as testing it’s new features such as the new Photon 2.0 appliance, NSX-T integration as well as the new HTML5 UI. vCloud Director lists one of the new features being feature parity of the HTML5 UI […]

“A problem occurred while getting data from the source vCenter Server” error when upgrading to vCenter Server Appliance 6.7 U1

Seeing that vSphere 6.7U1 was recently released, I decided to upgrade my VCSA 6.5 appliance to 6.7U1. Downloaded the installer ISO, extracted the ISO to a temp folder then ran the installer wizard. I then launched the installer, select the “upgrade” option and put in the details of my existing vCenter credentials and ESXi host […]

Windows Server 2019 media, Windows Server 2016 build 1809 and Windows 10 Build 1809 updates on hold

16 October 2018 – For those wanting to download the new Windows Server 2019 which went GA a 2 weeks ago, Microsoft has removed the media as well as update for build 1809 for Windows Server as well as Windows 10 due to reports of users missing files after updating. This is published on Microsoft’s […]

VMware Cross vCenter vMotion migration with separate SSO domains

I recently deployed a new vCenter 6.5 VCSA due to my adoption of a new hyper-converged stretched cluster. Similar to mine, there would be scenarios where you would need to deploy a new vCenter appliance rather than upgrading/migrating an older vCenter server. Now that I have built and configured my new VCSA and configured my […]

Cisco HyperFlex Stretched Cluster Performance Testing – HCIBench

I previously performed some performance testing of my new HyperFlex Stretched Cluster using IOMeter. The feedback that I received from some readers was that IOMeter is an “outdated” tool which was used to measure performance of old storage systems and is no longer suitable for new hyper-converged platforms. Therefore, I ran another performance test using […]

August 2018 Intel Vulnerabilities L1 Terminal Fault – L1TF (CVE-2018-3646 / CVE-2018-3620 / CVE-2018-3615)

Summary Following the recent Spectre/Meltdown vulnerabilities from Intel, the latest wave of new found vulnerabilities disclosed by Intel on Tuesday, 14 August includes 3 new vulnerabilities affecting Intel Core and Xeon processors from at least 2009 – 2018. These new vulnerabilities are collectively known as “L1 Terminal Fault”. Vulnerability Overview Details for each vulnerability as […]

Cisco HyperFlex Stretched Cluster Performance Testing – IOMeter

I built my first HyperFlex hybrid stretched cluster last week and was interested in getting some IO benchmarks. Just how much IOPs can I get out of the system? I had previously did similar testing on a VSAN ready-node and could easily obtain the maximum IOPs of the system so was interested to see if […]

HyperFlex VM with Native VMware Snapshots VM not responding issue

I recently encountered an issue performing a snapshot-based VM backup using Avamar with the nested vCenter VM inside a HyperFlex cluster. This issue occurs when using native VMware snapshot backups and NFSv3 datastores. The issue is more prevalent with nested vCenter on HyperFlex with VMware as HyperFlex presents the storage as NFSv3 datastores to the […]

HyperFlex 3.0 Nested vCenter Bug with error “something went wrong in executing scripts”

I was recently installing a brand new HyperFlex cluster at a remote site. The plan was to use a nested vCenter as there were no other infrastructure available and being a remote site, the connection back to the head office would be too unstable to put the vCenter at the head office. As with all […]

Cisco HyperFlex and Nexus 3548 ping / ARP drop Layer-2 connectivity issue

I recently deployed a Cisco HyperFlex system with some old Cisco Catalyst 2960s switches. I now have this shiny new piece of tin which does 10Gb connectivity but the upstream switches were limiting it to 1Gb. It is also recommended to have jumbo frames enabled but the Catalyst switches required a reload to enable jumbo […]

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