At least my self now decided not to believe in the ML Notes (not always though), its better testing what they have said. I was trying to replace an existing ocr location and also trying to add mirror copy of ocr. During RAC setup, we have used 1gb disks for OCR and voting disk (with single copy of each).
In order to multiplex the OCR and Voting disk we have requsted our UNXI team to gives us the four raw disks with 500mb each (oracle recommends 300MB for OCR/Voting Disk, may be less) and whil trying to replace/mirror the ocr to the new raw disks, I have got the following errors:
for OCR Mirror copy: PROT-22:Storage is too small
for replace OCR : PROT-16: Internal Error
As usaul, we search in the ML and found couple of notes for the same errors (317628.1 & 444757.1). Well, the ML Note : 317628.1 said the following:
" fails with "PROT-22: Storage too small" error. The problem is due to an Oracle bug where this operation requires the OCR mirror partition/file tobe larger than the original by up to 128MB. The bug has been fixed in the 10.2.0.2 patchset."
The note says that this bug has been fixed in 10.2.0.2 patch, we are on 10.2.0.3 patch and the bug still persists.