Which three use cases would necissatate a RDM? (Choose three

A virtual machine is using a Fibre Channel attached RDM LUN.

Which three use cases would necissatate a RDM? (Choose three.)

A virtual machine is using a Fibre Channel attached RDM LUN.

Which three use cases would necissatate a RDM? (Choose three.)

A.
VMware snapshots

B.
NPIV

C.
Physical server-to-virtual machine clustering

D.
Distributed file locking

E.
SAN management agents



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Raj

Raj

NPIV stands for N-Port ID Virtualization. It is an ANSI T11 standard that describes how a single Fibre Channel Physical HBA port can register with a fabric using several worldwide port names (WWPNs), what might be considered Virtual WWNs. This in turn means that since there a multiple Virtual HBAs per physical HBA, we can allow WWNs to be assigned to each VM.

Kumar

Kumar

Why not Distributed file locking ?

vcp510

vcp510

Correct: C, E, and B not D

Because:

“You can use NPIV only for virtual machines with RDM disks.”
http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.storage.doc/GUID-D9B143D8-9F93-41D1-A32F-9FF4DE4CDF14.html

“VMFS and RDM. Both options provide clustered file system features such as user‐friendly persistent names, distributed file locking, and file permissions.”
http://www.vspecialist.co.uk/objective-1-1-raw-device-mapping-rdm/

I study a lot and work with this technology but still this questions are messy for me:

1467 – A or B or D
1506 – D and C or A
1549 – A or C or D
818 – A and D
1162 – B or C
1336 – D and B or A
1488 – A
1474 – A or C
1461 – ?
179 – BD?
705 – DB?
563 – AD?
1237 – BD?
371 – A or D

Guys please comment this questions.