Upgrade to Grid Infrastructure – but OCR and VOTING on RAW?

Just received this question from a colleague these days:

“The current customer environment is on Linux with a 2 node RAC cluster having OCR and Voting Disks on RAW devices. Customer is concerned about the possibility of upgrading to 11gR2 Grid infrastructure first before they could upgrade to 12c Grid

Now the answer is written down in MOS Note 1572925.1:
How to Upgrade to 12c Grid Infrastructure if OCR or Voting File is on Raw/Block Devices

Basically the MOS Note says:
You will have to relocate your OCR/Voting to a supported device BEFORE you can upgrade …

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