We are running a newly designed vSphere 4.0 environment connected to a very big LeftHand iSCSI environment. Lately we discovered some major problems with a couple of VM’s totally freezing for about 30 seconds, this problem seemed to only occur on several VM’s from one specific host, so time to do some research on this [...]
All posts in category VMware
vSphere: Freezing VMs after deleting a volume from the SAN
Posted by Kenneth van Ditmarsch on December 2, 2009
http://virtualkenneth.com/2009/12/02/vsphere-freezing-vms-after-deleting-a-volume-from-the-san/
VMotion and Exchange 2010, not supported
Just a short blog post about Microsoft Exchange 2010 in combination with VMware vMotion. We are running this combination hosted on vSphere platform and noticed that whenever we vMotion over a Exchange 2010 Mailbox server that is using DAG (Database Availability Group’s), the DAG will fail. 25-05-2011 Update for Exchange 2010 SP1: Thanks to Toti [...]
Posted by Kenneth van Ditmarsch on November 20, 2009
http://virtualkenneth.com/2009/11/20/vmotion-and-exchange-2010/
VMFS- and Block Size is important for virtual RDM's
A little post from me since I got an error message while working with large RDM’s. While I twittered out the message it seemed that Duncan Epping from VMware had a posting ready at which he only had to press the “Publish”-button. See his very helpful article over here. What you might have noticed is that a RDM’s size is displayed as the real size [...]
Posted by Kenneth van Ditmarsch on November 10, 2009
http://virtualkenneth.com/2009/11/10/vmfs-and-block-size-is-important-for-virtual-rdms/
VMware VMotion, how fast can we go?
Lately while I was testing out specific failover behaviors in vSphere, I accidently discovered that VMotion Speeds (MB/s) are logged in the the /var/log/vmkernel, now that’s cool! Issue the command tail -f /var/log/vmkernel and than initiate a VMotion. You should get info like this: Host VMotionning to (receiving) Nov 7 21:13:14 xxxxxxxx vmkernel: 10:06:06:18.104 cpu3:9131)VMotionRecv: 226: 1257624621919023 [...]
Posted by Kenneth van Ditmarsch on November 9, 2009
http://virtualkenneth.com/2009/11/09/vmotion-speed-how-fast-can-we-go/
Understanding HP Flex-10 Mappings with VMware ESX/vSphere
I’ve written this blog as an add-on to Frank Denneman’s blog about Flex-10 which you can find over here. Goal of this blog is to get a clear vision about the Flex-10 port mappings that HP uses to facilitate their blades with NIC’s, with the special focus towards VMware ESX/vSphere.
Posted by Kenneth van Ditmarsch on November 4, 2009
http://virtualkenneth.com/2009/11/04/understanding-hp-flex-10-mappings-with-vmware/
VMware VCDX Design Exam, watch out for the "Next"-Button!
Yesterday I made progress in my pursuit to get the VMware VCDX Certificate by completing the Design Exam in Frankfurt. I’ve got a very important notice to make about this exam for all of you who are going to do this in the future. The exam consists of 2 section, one section in which you will [...]
Posted by Kenneth van Ditmarsch on October 31, 2009
http://virtualkenneth.com/2009/10/31/vmware-vcdx-design-exam-watch-out-for-the-next-button/
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