Agilent Technologies N5171B, Manual, Page: 32 / 48

32
Memory Clearing, Sanitization and Removal Procedures
Erase and Sanitize All
Erase and Sanitize All
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
(Main Memory)
MXG Series B
EXG User and “Secure Storage” partitions on CPU flash are erased
by flash vendor firmware. For algorithm details, see the
Application Note Greenliant NANDrive Security Erase Feature,
Purge Command Specification .
CPU Flash MXG Series A
PSG
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 PSG E8267C,
E8267D with
Option 005 only
ESG E4438C
All addressable locations are overwritten with a random
character three times.
Flash Drive MXG N5182B
EXG N5172B Erased by drive vendor’s firmware, which erases user data area,
SSD reserve area, and retired blocks.
The firmware accepts and implements the ATA commands
SECURITY ERASE UNIT
and
ENHANCED ERASE MODE
. For
details of these commands, see AT Attachment 8 - ATA/ATAPI
Command Set (ATA8-ACS) .
Flash Drive PSG E8257N with
Options 008 and 340
PSG E8257D,
E8663D with
Option 008
PSG E8267D with
Option 009
All addressable locations are overwritten with a random
character three times.