In essence, Oracle Automatic Storage Management (ASM) is a volume manager and file system built into the Oracle Database server. Raw disk volumes are allocated to ASM for management and control in the same way that raw volumes are managed by a volume manager. ASM is highly integrated with, and highly optimized for, the Oracle Database. It has become the best practice standard for Oracle Database storage.
Combining volume management functions with a file system allows a level of integration and efficiency that would not otherwise be possible. For example, ASM is able to avoid the overhead associated with a conventional file system and achieve native raw disk performance for Oracle data files and other file types supported by ASM.
ASM is engineered to operate efficiently in both clustered and nonclustered environments.
Beginning with Oracle Database 11g Release 2, ASM can also be applied as an enterprise class volume manager and file system for non-Oracle data.
Combining volume management functions with a file system allows a level of integration and efficiency that would not otherwise be possible. For example, ASM is able to avoid the overhead associated with a conventional file system and achieve native raw disk performance for Oracle data files and other file types supported by ASM.
ASM is engineered to operate efficiently in both clustered and nonclustered environments.
Beginning with Oracle Database 11g Release 2, ASM can also be applied as an enterprise class volume manager and file system for non-Oracle data.
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