I was restoring a Virtual Machine with Veeam Backup and Recovery, which seemed to be successful the VM won’t start and gave me the following error: Failed to open ‘virtual machine disk’:The parent virtual disk has been modified since the child was created.
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vSphere: Incompatible device backing specified for device ‘0’
Allthough there are a few tips about this little error message it took me two or three minutes to find to solution and get it working againg. This error occured at a vSphere server with a tape unit attached, which obviously wasn’t working anymore so i replaced it with another unit.
Read More »Manually updating a standalone vSphere server through the vSphere CLI
Not all vSphere servers are managed by vCenter, you probably also have a single vSphere server somewhere. So when there is no vCenter there is no VMware Update Manager (VUM) either, how do you patch the standalone vSphere server?
Read More »vSphere health status unknown
Everybody problably seen this one before, you login on your vSphere server and when you check the configuration, health status it show the grey question mark status unknown. First you give it a refresh (no changes), then you reset sensors (still no changes) … rebooting you server ain’t an option without downtime for your virtual servers.
Read More »vCenter Server Appliance – Holds on boot after certificate regeneration
After the certificate regeneration the vCSA has to reboot, but then i waited for ten minutes but still no vCenter. So i watched at the console and found my server hanging after “Waiting for the embedded database to start up: [OK] “
Read More »vCenter Server Appliance – Could not connect: An unknown connection error occurred
Just now and then i ran into a strange problem: my vCenter wasn’t reachable anymore. A simple reboot works, but is no solution! When you connect with the vSphere client you recieve the following error message: vSphere Client could not connect to "<server ip>" An unknown connection error occurred. (The request failed because of a connection failure" So i tried …
Read More »vSphere 5 on HP DL380 G7 with hardware warning status
After installing the latest HP Offline bundle my server returned a hardware warning status, so the investigation started. Before upgrading the HP drivers there was no error so i had to be something in the driverpack from HP. In my setup the affected server is a HP DL380 G7 with a P410i Arraycontroller. The affected offline bundle is: hp-esxi5.0uX-bundle-1.4-16.zip Solution: …
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