- In Oracle Database 11g Release 2, ASM Dynamic Volume Manager (ADVM) is available to support ASM Cluster File System (ACFS) as a general-purpose file system.
- ASM distributes input/output (I/O) load across all available disk resources within a disk group to optimize performance while removing the need for manual I/O tuning.
- ASM helps DBAs manage a dynamic database environment by allowing them to increase the database size without having to shut down the database to adjust the storage allocation.
- ACFS allows storage managers to extend ASM advantages to general file storage needs.
- The capabilities of ASM and ACFS save administrators time by automating storage management and thereby increase their ability to manage larger databases (and more of them) and file systems with increased efficiency.
- ADVM with ACFS eliminates the need for a separate cluster file system for shared nondatabase files.
- ASM is a complete solution.
ASM Key Features and Benefits
- Stripes files rather than logical volumes
- Provides redundancy on a file basis
- Enables online disk reconfiguration and dynamic rebalancing
- Reduces the time significantly to resynchronize a transient failure by tracking changes while the disk is offline
- Provides adjustable rebalancing speed
- Is cluster-aware
- Supports reading from mirrored copy instead of primary copy for extended clusters
- Is automatically installed as part of the Grid Infrastructure
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