Vmware RDM and Datastore

What is RDM

• Introduction

http://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.storage.doc/GUID-B3522FF1-76FF-419D-8DB6-F15BFD4DF12A.html

• Selecting a Virtual Disk Type

http://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.vm_admin.doc/GUID-8F10AA59-C412-4B42-B180-47D0DAB15539.html

Configuration Maximums

• Vsphere 5.1

http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-configuration-maximums.pdf

• Vsphere 5.5

http://www.vmware.com/pdf/vsphere5/r55/vsphere-55-configuration-maximums.pdf

Pros and Cons

• Compare datastore & RDM

http://longwhiteclouds.com/2012/09/17/the-case-for-larger-than-2tb-virtual-disks-and-the-gotcha-with-vmfs/

• Support VMDK larger than 2T in vsphere 5.5

http://www.mikelaverick.com/2013/08/whats-new-in-vsphere-5-5-the-virtual-machine-62tb-vmdk

• Performance report of VMDK & RDM

https://communities.vmware.com/docs/DOC-10799