44 The Information Company
and any other space reserved by the drive’s internal
controller.
TX1 will force removal of any detected HPA/DCO/AMA
configurations prior to starting a Sanitize – Block Erase
wipe, except for USB connected media. TX1 cannot
remove HPA/DCO/AMA configurations for USB connected
media, which means Sanitize – Block Erase is not
supported in that situation. See the note at the bottom of
this table regarding handling of HPA/DCO/AMA
configurations for USB connected media.
The ATA and SCSI Sanitize – Overwrite command
instructs the drive to overwrite all drive data in both
storage and on-drive cache with zeros. This feature is
typically implemented on HDDs but is available on some
SSDs.
Note that, for SSDs that support Sanitize – Overwrite, in
addition to all user-accessible drive space, over-
provisioned space and other space reserved by the drive’s
internal controller will also be erased.
TX1 will force removal of any detected HPA/DCO/AMA
configurations prior to starting a Sanitize – Overwrite wipe,
except for USB connected media. TX1 cannot remove
HPA/DCO/AMA configurations for USB connected media,
which means Sanitize - Overwrite is not supported in that
situation. See the note at the bottom of this table
regarding handling of HPA/DCO/AMA configurations for
Note: Due to complexities associated with power cycling USB connected drives,
HPA/DCO/AMA removal is not supported for such media on TX1 at this time, which
precludes the use of Secure Erase and Sanitize wipe types. The presence of such
configurations is detected and reported in the user interface and forensic logs for USB
connected drives (as with all other drive interface types), but they cannot be removed
directly by TX1 when connected to a USB port.
3.3.2.1 NIST 800-88r1 Compliance
In their document SP 800-88 r1: Guidelines for Media Sanitization, the National Institute
of Standards and Technology (NIST) describes two data sanitization methods – Clear
and Purge. TX1 indicates compliance with these data sanitization methods when the
appropriate wipe settings are selected – the compliance checkmark turns from a dull gray
outline to bold green, and the appropriate compliance radio button becomes selected.
Conversely, selecting either the Clear or Purge radio button, when enabled, will
automatically select compliant wipe settings. TX1 can purge drives that support
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