How does Raw Device Mapping work?

NytroZ
NytroZ used Ask the Experts™
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I have a LUN mapped to a Windows server that is used for backup storage.  We have all of our Acronis backups already saved to this LUN.  Because of poor performance we wanted to remove the map to the Windows Serve and then create a new disk on the Acronis appliance virtual machine and use the existing LUN with the backups.  If I create a new virtual disk it will be formatted and I will lose the data.  Can the option to use "Raw Device mappings" be used to create the new disk and allow me to save the data?
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VMware and Virtualization Consultant
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Commented:
RAW LUNs are transportable between like Operating Systems.

Your LUN is likely to be formatted with NTFS which probably is not compatible with the Linux Appliance.

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Commented:
So it looks like I wont be able to save my data and will need to create a VMFS-5 file system then right?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
You will need to add a virtual machine disk (vmdk), which resides on a VMFS datastore.

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