Discussions
12cR2 must use ASM to store OCR and voting disk ?
Deprecation of Direct File System Placement for OCR and Voting Files
Placing OCR and Voting Disk files on shared file systems is deprecated in favor of placing the files on Oracle ASM.
Starting with Oracle Grid Infrastructure 12c Release 2 (12.2), the placement of Oracle Clusterware files: the Oracle Cluster Registry (OCR), and the Voting Files, directly on a shared file system is desupported in favor of having Oracle Clusterware files managed by Oracle Automatic Storage Management (Oracle ASM). You cannot place Oracle Clusterware files directly on a shared file system. If you need to use a supported shared file system, either a Network File System, or a shared cluster file system instead of native disks devices, then you must create Oracle ASM disks on supported network file systems that you plan