VMware Cloud Community
aArun201110141
Contributor
Contributor

Physical RDM and Virtual RDM

Hi Everyone,

I have been hearing and studying about these two.

But can someone help me out with the practical applications of both these RDMs?

Like which one to choose when.

Thanks.

Reply
0 Kudos
1 Reply
a_p_
Leadership
Leadership

The main difference between the two modes are:

  • pRDMs supports LUN sizes of up to ~64TB
  • pRDMs are not affected by snapshots

  • vRDMS support LUN sizes of up to 2TB minus 512 Bytes
  • vRDMs support snapshots and can e.g. be backed up using image based backup applications

Additional information can be found at e.g. http://kb.vmware.com/kb/1005241

André