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Pro Ora cle Database 10g RAC on Linux Installation, Administration, and Performance by Steve Shaw, Julian Dyke

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Chapter 9. Automatic Storage Management (ASM)

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 OCFS that works on all platforms. ASM provides similar functionality to OCFS 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 for datafile storage.

In our experience, with the introduction of Oracle 10.2, ASM has become the most popular choice for storage management on new deployments and has reached relative maturity ...

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