Oracle DBA

Creating Future

1. Introduction to Automatic Storage Management:

Posted by Narashim Reddy .R on October 28, 2011

Why ASM?
What is ASM?
Comparison with other LVMs
 
Why ASM?
 
1. Databases are rapidly going in size i.e. dba need to manage thousand of datafiles. In order to decrease the complicity  
2. To Decrease the downtime.
3.  Managing the database storage is becoming difficult.
 
What is ASM?
 
ASM is the storage management solution recommended by oracle in alternative to conventional volume managers, file systems, and raw devices. ASM is a volume manager and a file system for Oracle database files that supports single-instance Oracle Database and Oracle Real Application Clusters (Oracle RAC) configurations. Provide Storage management capabilities like striping as well as mirroring.
 
Comparison with other LVMs
 
Other LVM                         ASM
Volume Group                  Disk Group
Volume                               ASM File
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