Hi all,
I have a problem - maybe quite basic, but I'm not VMware expert and after 3 hours of googling I decided to ask.
My setup: two HP P2000 G3 iSCSI arrays, 3 DL380 Gen8 hosts. Running VMware 5.5, with vCenter, licensed Essentials version. HA is currently turned off. No production servers for now.
What I'm trying to do: create Centos 6 cluster, with shared storage from P2000 array. Basic setup is done, now I need shared LUN from the array to be plugged in into 2 virtual machines. And here starts the problem, I figured out I need RDM, possibly with shared scsi bus adapters, but it will let me add RDM only to one machine.
It goes fine on the first virtual machine, but when I try to add this to the second one - there is nothing on the list. I tried physical, virtual, etc but nothing seems to help.
Any input appreciated - how can I add the same RDM (200GB LUN) to the second machine?
Many thanks
Chris
Chris,
Vmware filters out used luns by default. You will need to turn off the filter temporarily. See the RDM filter item below
VMware KB: LUN filtering mechanism during RDM creation
Welcome to the Community,
What you see is the correct (default) behavior. When you add a LUN as an RDM to a VM, an RDM mapping .vmdk file is created. To add the same RDM to another VM, you'll need to select "Add an existing virtual disk" and use this mapping .vmdk file.
André
Many thanks guys. It could be more intuitive or at least better documented, the idea is quite awkward to me. But it worked and I can now start digging into clustering.
Andre is right, I forgot you just add the VMDK, but it is good to know about how the storage filters work anyway