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Virtual Volumes (VVOLs) and RDM in VMware

I need to understand the  differences between VVOLs and RDM in VMware/Storage and when exactly should each be used and its advantages and disadvantages.
2 Solutions
R@f@r P@NC3RVirtualization SpecialistCommented:

These two links will clarify your doubts about the virtual volume and the RDM disks.


I remain attentive to your comments.

Ajay ChananaMCSE-2003/08|RHCSA| VCP5/6 |vExpert2018Commented:
The basic difference in RDM and VVOL is RDM you get from storage box as LUN but VVOL  is the local drives which is used to create datastore.

RDM is lun based there are limitation to it.
Where VVOL is object based there is not limitation as of LUN (256)per host.  
example - https://www.vmware.com/pdf/vsphere6/r60/vsphere-60-configuration-maximums.pdf
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