Category Archive: VMware

Aug 14

Recreating a vmdk descriptor file with vmkfstools

A VMware virtual machine disk is made up of two files: the .vmdk file and the -flat.vmdk file. The .vmdk file is the descriptor file and the -flat.vmdk file contains the data.

Jul 17

Jumbo Frames – Make sure it is setup end-to-end.

Jumbo Frames must be configured correctly end-to-end. This means on the vSwitch, vmkernel interfaces, physical switches, and endpoints. The vmkping command can be used to test a vmkernel interface for proper configuration of Jumbo Frames.

Jun 20

New Book – VMware vSphere 6.5 Host Resources Deep Dive

Just ordered a copy of Host Resources Deep Dive. The VMware vSphere 6.5 Host Resources Deep Dive is a guide to building consistent high-performing ESXi hosts.

Jun 19

Using vSphere HA to Protect vCenter

The ability to provide HA protection of the vCenter Server is one of benefit of deploying vCenter as a virtual machine. vCenter is required to configure vSphere HA but once vSphere HA is configured vCenter is NOT required for vSphere HA to protect virtual machines in the cluster, including a virtualized vCenter Server.

Apr 23

Setting up the Weathervane Benchmarking Tool in the Home Lab

Standing up Weathervane in the home lab will provide hands-on for developing skills like creating a template VM, creating a guest customization specification, working with some basic Linux commands, working with an app with multiple tiers, creating a guest customization specification, cloning VMs, and monitoring performance metrics. This post provides an overview of how I set up Weathervane in my home lab, an example of the results generated from the Weathervane runs, and a look at the performance metrics I observed in lab during the Weathervane runs.

Mar 08

Microsoft Failover Cluster in a Box on SimpliVity

This is a White Paper I worked with SimpliVity Product Management on to provide details on how to implement and operate a Windows Failover Cluster on SimpliVity OmniStack systems. It also details how availability is provided across different failure scenarios

Feb 21

Automated vSphere Lab Deployment Script

Very handy! @lamw has put together an automated lab deployment script which will deploy a 3 host nested vCenter/ESXi/VSAN/NSX Lab. It supports vSphere 6.0 Update 2 and vSphere 6.5. The scripts provide a fully deployed and ready to use lab in under an hour! A full write up and links to the scripts can be …

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Jan 19

Automate Backup of the VCSA to the vMA

Recently I did a post on how to Target the vMA for VCSA Backups. This post takes things a step further and automates the backup of the VCSA using a shell script, the vCenter Appliance REST API, and cron on the vMA.

Jan 16

Target the vMA for VCSA Backups

One handy new feature available with vSphere 6.5 is the ability to take a supported backup of the vCenter Server Appliance (VCSA) configuration and database. VCSA backups can be transferred to a target using HTTP/S, FTP/S, and SCP. This post walks through backing up the VCSA using SCP to target the vSphere Management Assistant (vMA) to store the backup.

Jan 15

Adding a /workspace Disk to the vSphere Management Assistant (vMA)

The vMA is deployed with a single 3 GB disk with about 1 GB available after deployment. This post walks through adding a disk to the vMA appliance to provide additional storage for scripts, logs, VIBs, iso, backups, etc.

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