ESX4: cannot contact specified esxblabla host

[patrkell]

Since having installed HP Sim agents on our two ESX Servers (DL360 G6) all the VM get lost in the morning between 6 and 8 o'clock at once!

Some days before we updated ESX to latest version 4.0.0 Build 208111

The only thing we can do then is to login to the ESX console (CTRL-F1) and reboot our two ESX hosts. In the log File we can see:
DEC 16 08:01.05 esxblabla vmkernel: 0:23:51:41.141 cpu3:4545)<3>lpfc820 0000:08.00.0: 0:(0):0748 abort handler timed out waiting for abort to complete: ret 0x2003, <1:1>, snum 0x98b592
DEC 16 08:01.05 esxblabla vmkernel: 0:23:51:41.141 cpu3:4545)WARNING: SCSILinuxAbortCommandsFailed, Driver lpfc820, for vmhba1

Any Tips?

[patrkell]

maybe something similar like

"Excessive reservation conflicts (0xbad0022) across all LUNs"
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004771

[patrkell]

Now there is also a new Insight Agent:
8.25 supports ESX4
8.3 supports ESX4 update1 (December 7 2009)

As we still use 8.25 but on ESX4 update1, has anyone some experience with 8.3?

[patrkell]

disabling HP insight cmafcad module, did not help so far!
Our both ESX hosts get hung the same time, once a day.

Any ideas welcome?