Using EMC Powerpath with ASMLib

ASMLib is optional software to simplify the use of Automatic Storage Management (ASM) for Oracle databases on Linux.

ASMLib ensures consistent naming of devices across RAC clusters, and also maintains permissions on devices across reboots, a feature that was important until UDEV rules were added to Linux with the 2.5 kernel.

EMC Powerpath is an advanced multi-pathing host based solution that works with EMC arrays to intelligently load balance I/O across all available paths as well as provide fault tolerance by automatically re-routing traffic around failed paths. EMC Powerpath is significantly more powerful and robust that native Linux MPIO.

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