Security Features & Document of Volatility 22
Memory Clearing, Sanitization and Removal Procedures
Erase and Sanitize All (Option 006 Only)
Erase and Sanitize All (Option 006 Only)
This function performs the same actions as
Erase All
, plus it clears and
overwrites the various memory types, as described below.
Memory Type
Models
Description
SRAM
(Battery- backed)
PSG, ESG only
All addressable locations are overwritten once with random characters.
CPU Flash
MXG Series A
ESG
User data is erased with flash chip block-erase commands. No overwrite
is performed. During erasure, the system files are temporarily moved to
main memory and are then restored to CPU Flash when erasure is
complete.
Extended
Persistent
Memory
(Flash)
MXG N5162A/82A only
The file system is formatted, then all addressable locations are overwritten
with random characters, and then the file system is reformatted again.
These actions are then repeated.
Hard Disk
ESG E4438C
All addressable locations are overwritten with a random character three
times.
Model
Key Sequence
MXG (Series A)
File
>
More
>
Security
>
Erase and Sanitize All
>
Confirm Sanitize
ESG
Utility
>
Memory Catalog
>
More
>
Security
>
Erase and Sanitize All
>
Confirm Sanitize