VMware DRS disable caused by single VM

Posted on June 8th, 2011 in Tips, Virtualization | No Comments »

My Client had a weird issue recently on 1 of the production vSphere 4.1 host. Error message shown on summary tab as ” DRS is not able to function normally cause by insufficient resource”.This is not the exact message as I can’t remember the full error message, but it represent the similar meaning of the error. This message had been alerted for more than a week as we thought the mgmt-ware restart command should able to fix this.  The system is currently in production, therefore we are suggesting to vmotion out all the production VMs, and put the host to maintenance before we issue the command.

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Monitoring features from ESX 3.5 update 2

Posted on August 29th, 2008 in Virtualization | 2 Comments »

Latest version of ESX 3.5 update 2 had been impressed with the advance monitoring which will ensure if you had your VM hang up from the Operating System perspective, it will force the VM to be restarted due to the heartbeat connection is lost. This has been some good features and effort from VMware I will said.

At the same time, I will say this is not fit to my environment. Maybe you guys had experienced the similiar situation with the patches release from ESX always Require VMtools to be upgraded. I am still concerning why it require VMtools to be upgraded for any minor or major update from the ESX release. This actually had caused us a lot of time to negotiate with the down time to ensure the VM are patch with the latest version of VMtools. Again, when the VMtools is not updated, the heartbeat will be inconsistent of not detected.

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