All posts for the month November, 2009

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 […]

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 […]

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 […]

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. If you are looking for the HP FlexFabric mappings […]