Posts Tagged ‘vmotion’

DRS Deepdive part II

Yesterday I posted the DRS Deepdive. One of the questions still left open was how DRS decides which VM to move to create a balance cluster. After a lot of digging for non-NDA info I found this “procedure” in a VMworld presentation(TA16) amongst some other cool info.
The following procedure is used to form a set [...]

DRS Deepdive

Last week I mentioned which metrics DRS used for load balancing VMs across a cluster. Of course the obvious question was when the DRS Deepdive would be posted. I must admit I’m not an expert on this topic as like most of you I always took for granted that it worked out of the box. [...]

Which Metrics does DRS use?

I received a question a while back about DRS initiated VMotions. One of my customers wanted to know which metrics were used by DRS for deciding if a VM needs to be VMotioned to a different host or not. These metrics are:
Host CPU: Active (includes run and ready Mhz)
Host Memory: Active
Just a little something [...]

Long Distance VMotion

As you might have noticed last week I’m still digesting all the info from VMworld. One of the coolest new supported technologies is Long Distance VMotion. A couple of people already wrote a whole article on this session so I will not be doing this. (Chad Sakac, Joep Piscaer) However I do want to stress [...]

Second vswp file when doing a VMotion with vSphere?

I was just reading this topic on the VMTN community. In short, a second vswp file gets created during a VMotion. As the starter of this topic noticed it could lead to not being able to VMotion VMs if you don’t have enough free disk space on your VMFS volume.
One of my UK colleagues, David [...]

Storage VMotion and moving to a Thin Provisioned disk

I was just reading this article by Vladan about Storage VMotion. He explains how you can get your unused disk space back with Storage VMotion and moving to a Thin Provisioned disk at the same time. I agree that this is one of the best new features out there. It’s easy and effective.
However, you will [...]

vWire Opscheck

As it seems Tripwire is preparing a new toolkit. Opscheck is the first of more to come that has been released.
Tripwire created a new website / community called vWire. They moved Configcheck over to vWire and added Opscheck to the list. Where Configcheck identifies possible security vulnerabilities and Opscheck checks for VMware VMotion support [...]

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