Oracle ASMLib maintains permissions and disk labels that are persistent on the storage device, so that the label is available even after an operating system upgrade.

The Oracle Automatic Storage Management library driver simplifies the configuration and management of block disk devices by eliminating the need to rebind block disk devices used with Oracle Automatic Storage Management (Oracle ASM) each time the system is restarted.

 

With Oracle ASMLib, you define the range of disks you want to have made available as Oracle ASM disks. Oracle ASMLib maintains permissions and disk labels that are persistent on the storage device, so that the label is available even after an operating system upgrade.

 

More information on Oracle ASMLib can be found here.

 

Oracle ASMFD helps prevent corruption in Oracle ASM disks and files within the disk group.

 

Oracle ASM Filter Driver (Oracle ASMFD) rejects write I/O requests that are not issued by Oracle software. This write filter helps to prevent users with administrative privileges from inadvertently overwriting Oracle ASM disks, thus preventing corruption in Oracle ASM disks and files within the disk group. For disk partitions, the area protected is the area on the disk managed by Oracle ASMFD, assuming the partition table is left untouched by the user.

 

Oracle ASMFD simplifies the configuration and management of disk devices by eliminating the need to rebind disk devices used with Oracle ASM each time the system is restarted.

 

More information on Oracle ASMFD can be found here.

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