We are setting up a VSphere 5.5 environment - 3 hosts directly attached to an MSA 2040 with iSCSI. Is directly attaching the host to the MSA an issue or should we be using switches? Our hardware vendor is saying
"in order for VMWare volumes to have access through shared storage it has to through a switch. You can run into issues where if they are directly attached then the VMDK’s on one host would not be seen or accessed on the other hosts (high availability or Vmotion)."
Also
"Support of direct attach to the msa via iSCSI is OS dependant. Some OS'S support it others don't. MSA doesn't support direct connect to Vmware via iSCSI. "
I've talked to HP directly and they state direct attached thru iSCSI is supported with the MSA 2040 and VMware.
Is anyone running this setup that can put my mind at ease?
Thanks.