ASM Concepts

ASM was created as a volume manager intended specifically for Oracle data files that runs on top of raw or block devices. This file system is kept and maintained by the Oracle kernel, so Oracle knows where file extents are and automatically manages the placement of these extents for maximum performance and availability of your database. You, as the MAA DBA, will not know or care where Oracle is placing extents on disk. Oracle will do all of that management for you through ASM. No third-party volume management software is needed, and no file system is required. ASM manages the data placement and its clients simply make requests to ASM for information on where to go to access that data. The ASM CFS adds the ability to support non-Oracle file....