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 environment for Windows and Linux virtual machines. Step 1 – Prepare the Guest Operating Systems Windows Linux Step 2 – Punch some Holes
Read More Reclaiming space from thin provisioned disks in VMware ESXiBackup 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, run this command: vim-cmd hostsvc/firmware/backup_config The command will produce a link for downloading the configBundle.tgz archive. Note that you have to replace the asterisk in the…
Read More Backup VMware ESXi HostUpon 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 was taken with VHV enabled. To restore, set vhv.enable to true Check and confirm on both hosts that /etc/vmware/config has vhv.enabled = “TRUE” in the configuration. This…
Read More Configuration mismatch: The virtual machine cannot be restored because the snapshot was taken with VHV enabled.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 by devices on the outside of my Hyper-V server, I needed to enable Forged Transmits (MAC spoof) on my Proxmox VE 7.2 Hyper-V VM. Now I can…
Read More Proxmox Nested VM – Enable MAC spoofing Hyper-VNested 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 Windows Server 2022. Both products are expected in the second half of 2021. Enable Nested Virtualization Get the virtual machine intending to enable nested virtualization on using…
Read More Enable nested virtualization for VM in Hyper-VI 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 and it was configured as RR path. I knew this wasn’t a physical issue, it had to be a software/configuration issue on my host because there were:…
Read More Case of Dead Path on ESXiDuring 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 Client I went to my ESXi host then Configuration, Storage Adapters, iSCSI Software Adapter. Taking a look at vmhba33 Properties then CHAP… I see that there was…
Read More A general system error occurred: esxi1: CHAP setting not compatible.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 get CPU RDY down to about 3-4% which still isn’t great. I made the decision to grab a few Intel Xeon X7560 processors to replace the existing…
Read More Intel Xeon E7540 replaced with X7560Here’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 | awk ‘/Nimble iSCSI Disk/{print $7}’ | sed -e ‘s/(//’ -e ‘s/)//’`; do echo $x esxcli storage nmp psp roundrobin deviceconfig set -d $x -t bytes -B…
Read More Performance tuning iSCSI Round Robin policies in ESXi for Nimble storageIn 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: Turn on the server. Note: If necessary, connect a keyboard, monitor, and mouse to the console breakout cable and connect the console breakout cable to the compute node.…
Read More IBM System X3850 Disable Processor Power Management