ORACLE - ASM Fast Mirror Resync

ASM FAST MIRROR RESYNC :

                             ASM fast resync keeps track of pending changes to extents on an OFFLINE disk during an outage. The extents are resynced when the disk is brought back online.By default, ASM drops a disk in 3.6 hours after it is taken offline. You can set the DISK_REPAIR_TIME attribute to delay the drop operation by specifying a time interval to repair the disk and bring it back online.

Example:
ALTER DISKGROUP DG1 OFFLINE DISK DG1_01
ALTER DISKGROUP DG01 SET ATTRIBUTE 'DISK_REPAIR_YIME' = '4.5h';
SELECT REPAIR_TIMER FROM V$ASM_DISK;
SELECT GROUP_NUMBER,NAME,VALUES FROM V$ASM_ATTRIBUTE;
SELECT GROUP_NUMBER, OPERATION, STATE FROM V$ASM_OPERATION;
ALTER DISKGROUP DG1 ONLINE DISK DG1_01;