Hardware and RAID configuration
This was a HFS+ volume on a RAID 0, comprising two partitions on the same physical drive.
The volume became inaccessible after some configuration changes.
The customer tried to recover the data using File Scavenger®. However
a RAID 0 definition in File Scavenger® requires two physical drives.
The main benefit of a RAID 0 is to combine the data transfer rates of multiple physical hard drives. For example if each hard drive is capable of write speed of
100 MB/sec then a 2-drive RAID 0 can theoretically achieve 200 MB/sec. Therefore there are no benefits
creating a RAID 0 from two partitions on the same physical drive. Doing so actually slows down the transfer rate as the read/write heads must constantly move back and forth
between the partitions. For that reason File Scavenger® assumes two partitions forming a RAID 0 are on two separate
File Scavenger® was modified too support RAID 0 partitions on the same drive.
Data was successfully recovered with the original filename and folder structure.