Reclaim Unused Space in Hyper-V
Overview This guide explains how to reclaim unused disk space from a Hyper-V virtual machine (VM) after cleaning it up internally. The process involves zeroing out free space…
Category
Virtualization
56 articles in this category
Slow Performance VMware Workstation 17.0.x – Windows 10 / Windows 11
Noticed horrible performance using VMware Workstation 17 on my system. I was running Hyper-V side-by-side, so I decided to nuke Hyper-V and the subsystems from that. Removed the…
Reclaiming space from thin provisioned disks in VMware ESXi
This is the procedure that has worked for me. There are various methods dating as far back as 2011 across the internet, but this step-by-step works in my…
Backup VMware ESXi Host
Backup using vim-cmd To ensure that the configuration of the target ESXi host is synchronized with persistent storage, run the following command: vim-cmd hostsvc/firmware/sync_config To back up ESXi…
Configuration mismatch: The virtual machine cannot be restored because the snapshot was taken with VHV enabled.
Upon migrating a VM from one ESXi host to another ESXi host, I received the following message. Configuration mismatch: The virtual machine cannot be restored because the snapshot…
Proxmox Nested VM – Enable MAC spoofing Hyper-V
Windows 11 > Windows Hyper-V > Proxmox VE 7.2 > Debian 11.2 VM In order for my Debian VM to be able to access the DHCP/network resources provided…
Enable nested virtualization for VM in Hyper-V
Nested virtualization is available on Windows 10 build 19636 and later. As far as I understand, AMD support will be officially available as part of Windows 11 and…
Case of Dead Path on ESXi
I had 8 paths go down to a dead state on an ESXi host. The paths were MRU via Fiber Channel to a storage array. One path worked…
A general system error occurred: esxi1: CHAP setting not compatible.
During datastore creation in vSphere using the Nimble vCenter plugin, I get the following error: A general system error occurred: esxi1: CHAP setting not compatible. hba=vmhba33 In vSphere…
Intel Xeon E7540 replaced with X7560
Recently I've been dealing with CPU RDY of about 5% across two ESXi hosts. I've load balanced the best I could given necessary workloads and was able to…
Performance tuning iSCSI Round Robin policies in ESXi for Nimble storage
Here's an ESXi console script to loop through each Nimble eui.* adapter and set IOPS=0 and BYTES=0 (per Nimble recommendations). for x in `esxcli storage nmp device list…
IBM System X3850 Disable Processor Power Management
In order to work around the issue processor power management has to be disabled in system UEFI and vSphere Client. To change power policies using server UEFI settings:…
My Notes and Benchmarks on VMware Flash Read Cache
I've spent some time exploring and studying the use and configuration of VMware Flash Read Cache (vFRC) and its benefits. These are my notes. Useful Resources VMware Flash…
VMware vSphere 6.5 Test Drive
This will be an evolving post as I document/note the installation process and some configuration and testing. I'm installing VMware vSphere 6.5 under my current virtualization platform to…
Monitoring CPU Ready VMware Guest
CPU Ready value is cumulative between the number of vCPUs the VM is assigned. For example, a one vCPU VM has the measurement of 1000ms. For a VM…