As RecoveryRus researches deeper into NETAPP, we have made great progress on RAID4 and RAID DP based WAFL storage recoveries. We can now extract files under NAS and SAN systems, then we have NETAPP that supports AID4，RAID DP，NAS,SAN, deleted Vol, deleted LUN.
WAFL file system has 3 meta-data files:
1.inde file – contains the inodes for the file system
2.block map file – identifies free blocks
3.inode map file – identifies free inodesa