VMWare Virtualization Technology – How To’s, guides and troubleshooting

Enable Change Block Tracking via PowerCLI Scipt

Issue: You need to enable Change Block Tracking (CBT) on numerous virtual machines and have it take effect immediately. Background: Enabling change block tracking does not take effect immediately and requires a suspend/resume or snapshot create/delete.  This process of changing the CBT setting and activating the change becomes incredibly time consuming. Solution: Enable Change Block Tracking via PowerCLI Script Copy the below txt and paste into a text file with extension .ps1.  Place Read more [...]

How to Install Dell Firmware+Bios updates ESXi hosts

Issue: you need to install Dell Firmware and Bios Updates on a VMWare ESXi host server. How to Install individual Dell Firmware / Bios updates using DOS USB Bootable.  For example I installed H800 firmware update using this method: "How to create a Bootable USB Pen drive / Flash USB key using the DELL Diagnostics Utility" https://www.dell.com/support/article/us/en/04/SLN284362/EN Alternatively you can create an Install package of multiple updates by creating bootable Dell repository. Update Read more [...]

Update Manager fails with “SQL installation was not successful”

Issue: Installing VMWare Update Manager with embedded Microsoft SQL 2012 database fails with error "SQL installation was not successful" Cause: Your server must meet the system requirements of Microsoft SQL 2012 Express.  If you're running Windows 2008 R2 you must have Service Pack 1.  If you're running Windows 2008 then you need Service Pack 2. Additional: If you attempt to install SQL 2012 Express manually by downloading from Microsoft, it will give more error output.  In my case it complained Read more [...]

How to remove ARP cache entry from ESXi 5.5

There doesn’t appear to be a way to completely clear the arp cache of ESXi however you can remove specific entries one by one

Examples of command usage from VMWare host CLI:

esxcli network ip neighbor remove -a -v 6

esxcli network ip neighbor remove -a -v 4

-v is the IP version, ipv4 or ipv6


Updating vcenter appliance 5.x

Issue: You have a VCenter appliance 5.0 or 5.5 that you need to update. Solution: There is a very simply and painless way to update VCenter 5.x appliances 1) Logon to the web management of your VCenter 5.5 Appliance using web browser and port 5480, for example: VMware product versions numbers contain up to three digits, for example, vCenter Server Appliance 5.5.0 A release that changes the first or second digit involves major changes in the software, requiring Read more [...]