Hello,
we have a 3-node vsphere 5.5 enterprise-plus licensed cluster and buyed three HCL certified 200 GB SSD's for each Host for vFRC.
On one of our Hosts we have a big VM with 12 vcpu and ~50 gb ram. During the last three months this VM got some freezes and the only possibility to get the win2k8r2 back running was to cold reboot the VM. After some troubleshooting with the vmware support we figured out that this freeze is happening when vFRC is enabled.
At the moment we don't know how to handle the issue.
This freeze happens when one of the hosts has the vFRC pool enabled - even if the VM doesnt reside on the host using the vFRC pool !
one of our test showed:
--> the affected VM was running on Host 2. Host 1 + 2 have no vFRC Pool enabled. When enabling vFRC pool on Host 3, the VM residing on Host 2 gets the freeze after some hours.
Hosts are 3 x DL 380 G7 and the HP SA P410i that handles the SSD has the latest drivers "scsi-hpsa 5.5.0.60-1OEM.550.0.0.1331820".
How is it possible that a VM that does not use vFRC + resides on a Host with no enabled vFRC pool is affected if i enable a vFRC pool on another host in the cluster. That doesn't really make sense for me & vmware support, too.
Anyone has an idea what could be the cause for this ?
Regards
Dnk