Most flash SSDs use complicated controller technology to extend the reliability and speed of storage. The architecture inside a high performance SSD is more complicated than that in most RAID systems. The algorithms which map addresses to physical media locations vary from manufacturer to manufacturer – and in many cases – like the formula for making Coke or Pepsi – the details are closely guarded commercial secrets.

The biggest traditional customers of flash SSDs have been the military or industrial users who didn’t want enemies / competitors stealing their secrets.

Ontrack announced its capabilities to successfully recover from flash media and solid state disk (SSD) on Oct. 15, 2008.

20% of Flash/SSD Recoveries Can Be Fixed by Electronic Repair according to Kroll Ontrack Statistic.

Challenges to Security Implementations

* Passphrase and Key Management
-User forgets passphrase or is locked out
-Part of decryption key is stored on media; when device fails, can‘t decrypt contents
* Automatic Hardware Encryption
-Proprietary encryption engine part of controller microcode; when device fails, replacement controller is impossible for success
-User doesn‘t know how to manage security
* Enterprise implementation requires a _One Size‘ fits all Security method—for IT consistency
* Wear Leveling and Spare Blocks
-Extraction of raw data reveals user data in spare blocks
-Blocks marked for erasure is not immediate – garbage collection delay
-Corrupt blocks mapping prevents normal erasure process – leaves data intact and vulnerable

Device Properties and Challenge to Recovery

Proprietary Data Layout-Many Variations of Flash Translation Layer (FTL) Implemented
Address Line Complexity-Byte Inversion, Byte Striping, etc.
Wear-leveling Utilization-Wear-Leveling and Meta-Data Information Varies Widely

* No Consistency in Similar Product Lines or Models
* Increases Delays in Recovery
* Affects Consumer Perception of Reliability of Flash/SSD

Resource by Sean R. Barry Kroll Ontrack

Hope there will be soon more good SSD data recovery solutions or tools in the market!

Data recovery Salon welcomes your comments and share with us your ideas, suggestions and experience. Data recovery salon is dedicated in sharing the most useful data recovery information with our users and only if you are good at data recovery or related knowledge, please kindly drop us an email and we will publish your article here. We need to make data recovery Salon to be the most professional and free data recovery E-book online.