http://kb.promise.com/file/download/d5938448-2bbb-48ba-94bd-a5b6009cefab
PerfectRAID™ is Promise’s patented RAID data protection technology; a suite of data protection and redundancy features built into every Promise RAID product.
- Predictive Data Migration (PDM): Replace un-healthy disk member in array and keep array on normal status during the data transition between healthy HD and replaced HD.
- Bad Sector Mapping and Media Patrol: These features scan the system’s drive media to ensure that even bad physical drives do not impact data availability
- Array Error Recovery: Data recovery from bad sector or failed HD for redundant RAID
- RAID 5/6 inconsistent data Prevent (Write Hole Table)
- Data content Error Prevent (Read/Write Check Table)
- Physical Drive Error Recovery
- SMART support
- Hard/Soft Reset to recover HD from bad status.
- HD Powercontrol to recover HD from hung status.
- NVRAM event logging
