Additional configuration is required to use the Oracle Automatic Storage Management library Driver (ASMLIB) with third party vendor multipath disks.

• About Using Oracle ASM with Multipath Disks
  Oracle ASM requires that each disk is uniquely identified. If the same disk appears under multiple paths, then it causes errors.
• About Disk Scan Ordering
  The ORACLEASM_SCANORDER variable specifies disks to be scanned first.
• Configuring Disk Scan Ordering to Select Multipath Disks
  To configure ASMLIB to select multipath disks first, complete the following procedure.
• Configuring Disk Order Scan to Exclude Single Path Disks
  To configure ASMLIB to exclude particular single path disks, complete the following procedure.