At a customer site we noticed that the ESX hosts were swapping, Nagios generated a nice alarm. After some research it seemed like certain VM’s were swapping to the VMFS volume, so not inside the OS but VMware swap usage. A closer look at the system revealed that we weren’t overcommitting. There was over 6GB of memory free and there [...]

A while back I blogged about the customization specification wizard failing when entering the password. Today I visited the same customer again. This problem only occurred when running it from the VirtualCenter itself. Today I upgraded the VirtualCenter server to 2.5 Update 1 and the problem is solved… Still don’t know why it happened,

I just encountered the same bug that Aaron Delp blogged about in January: It appears we have found a possible bug in the Deploy from Template Command in ESX 3.5. When you create a Windows Server based template and then try to deploy directly into an Active Directory with customization, the new system will get an error that a service [...]

VMTN user “ian4563″ recently posted a thread about problems with the HA constraints. The error that was pulled from the log files: Das admission check failed. Configured failover: 2, Expected new failover: 0 And the solution according to VMTN user “eziskind”, who also is a VMware employee: Looks like you have some 4-cpu vms in the clusters too. That will [...]

One of my readers just emailed me the following, again thanks for this info which might me useful to any of you guys out there playing with VCB: Today with the help of VMware Support I solved a strange problem. With all my Solaris10-32Bit VM’ s I was getting an error, when I tried to backup them via VCB. Creating [...]

After installing ESX 3.5 update 1 an error occurs during the boot proces: Parsing error: parse error: Error adding class VMware_IdentityMemberOfCollection to the repository: CIM_ERR_NOT_FOUND: The requested object could not be found: “VMware_Identity” Compiling omc-smash-interop-schema.mof into root/PG_Interop A quick search on the VMTN forum revealed that I wasn’t the only one experiencing these problems. Luckily Mike Laspina already discovered how [...]

Yesterday evening I witnessed a weird phenomenon. We had to bring down a complete environment to move a 19″ rack to a different location. We switched the SAN on, waited a couple of minutes and switched the ESX hosts on. When the ESX hosts finished booting we booted the VirtualCenter. Everything looked normal in the VI Client. I had all [...]