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Pro Oracle Database 11g RAC on Linux by Martin Bach, Steve Shaw

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Chapter 9. Automatic Storage Management

In this chapter, we will describe ASM, which was introduced in Oracle 10.1 and is intended to simplify storage administration by automating disk and file management tasks to reduce management overhead and deployment costs.

ASM is a generic alternative to a clustered file system (CFS)/cluster logical volume manager that works on all platforms. ASM provides similar functionality to a classic CFS but includes volume management capabilities, such as disk balancing and redundancy. If you are using the Oracle Database 10g Standard Edition with the free RAC option, you must use ASM to store database files.

In our experience, since the introduction of Oracle 10.2, ASM has become the most popular choice for storage ...

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