We're experiencing a heck of a problem during cloning or migration processes.
I used to be able to do this sort of thing without any problems, though the speed was still not all that great.
Hardware:
HP Proliant C3000 enclosure
BL460c G7 blades
BLc SB40c Storage blade
Enclosure is connected to Netgear Gigabit switch
Nowadays, whenever I try to do a Clone in Vcenter from one blade to another, one of the blades loses connectivity to Vcenter and the network - usually not the one involved in the transfer. It appears to me that the blade loses network connectivity altogether, but the VMs conitnue to run. I can't confirm this because I can't ping any of them during this time. But the blade power remains constant and when the transfer finishes, the blade reconnects and all services are restored.
Knowing this problem was occurring and that I had to perform a massive VM transfer that could take overnight, I powered down all VMs with the hopes that the transfer speed would improve. This, sadly, was not the case. The transfer took longer than expected and I had to cancel it altogether just to get services back up for business.
So my two concerns are
1. Why such slow transfer speeds when all blades are communicating via the interconnects or, at worst, a Gigabit switch?
2. Does anyone know the cause of the blade losing connectivity during transfer processes of any kind?
These are intolerant symptoms when one has VM's that require more space than what is simply required for an OS.
I realize this may not be due to VM configuration, but it quite possibly could be...
Hpw is the networking configured in your blades? Are the VMs stored on a SAN or shared or are they stored locally to the blades? You might be saturating the vmkernel port -
That's a very good question, and I'll admit, I don't have a good understanding of virtual networking.
Most of the VM's are stored locally on each blade while a few are stored on our storage blade (All within the enclosure).
Most all of the network configuration is default.
Here is what I see within the Vswitch properties panel:
______________________________
Network adapter Speed 1000 Full
Name: vmnic0
Location: PCI 02:00.0
Driver: be2net
Link Status: Connected
Configured Speed, Duplex: 1000Mb Full Duplex
Actual Speed, Duplex: 1000Mb Full Duplex
iSCSI port binding: Disabled
______________________________
I'm sure that doesn't cover what you are looking for, so if specific properties help in this discussion, let me know.
I can tell you that all three blades are configured with default settings. I have not configured VLAN for any of them.