An administrator needs to use guest OS clustering in a vSphere environment that uses a Fibre
Channel SAN. The clustering software does NOT have a SCSI target or a SCSI command passthrough requirement.
Which VMware storage type should the administrator use?
A.
Physical RDM
B.
VMFS
C.
Virtual RDM
D.
NFS
Explanation:
A?
Sorry B VMFS As there is no requirement for SCSI command passthrough.
Not sure I understand this and I hope I don’t confuse anyone.
A Vsphere environment, so between two VM, either cluster in a box or cluster across a box. No mention of OS but I’m working off MSCS PDF.
A- physical RDM, this is pass through, so there is no requirement for it.
B- VMFS, supported for Cluster in box only
C- Virtual RDM, Supported for Cluster in a box and Cluster across boxes.
D- NFS, not supported and Q said FC SAN
Could C not be the answer too?
http://pubs.vmware.com/vsphere-55/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-55-setup-mscs.pdf
My understanding of RDM is that a Windows guest would typical have a windows initiator iscsi to talk to RDM. So A and C are out.
NFS is not supported by MSCS
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1037959
Answer B
after reading the sentense under this table,
i would assume, that B is correct
http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc%2FGUID-60241ABD-CCED-452B-B213-817A6A44A935.html&resultof=%22clustering%22%20
Really could be B or C after reading this table. ambiguous question.
http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc%2FGUID-60241ABD-CCED-452B-B213-817A6A44A935.html&resultof=%22clustering%22%20
B and C both make sense. Nothing in the question implies cluster in a box, or cluster across boxes. I would use Virtual RDM, and think the answer should be C.
B : VMFS
Close but i think VMFS makes sense since there is no passthrough required.
“Failover clustering with Windows Server 2008 is not supported with virtual compatibility mode (non-pass-through) RDMs”
https://pubs.vmware.com/vsphere-55/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-55-setup-mscs.pdf