ERAS License Consumption

Below is a table that represents an explanation of the ERAS licensing model and includes two additional examples at the bottom of the table:

Computer with TPM	Self-Encrypting Drive	Number of Licenses Consumed
TPM Enabled	0 Drive Initialized	1 License Consumed
TPM Enabled	X Drives Initialized	X Licenses Consumed
TPM Disabled	X Drives Initialized	X Licenses Consumed
Examples Below:
TPM Enabled	1 Drive Initialized	1 License Consumed
TPM Enabled	2 Drives Initialized	2 Licenses Consumed

Where X is greater than zero

ERAS consumes a license for each self-encrypting drive that has been initialized and/or locked by ERAS.
If a computer account has been disabled or has been removed from Active Directory, but the drive remains initialized and or locked, that drive will continue to consume a license.
A computer may have two or more drives, so if two self-encrypting drives are connected to a machine and ERAS has initialized both drives, it consumes two licenses.

The second drive could be an external drive or an internal drive.

Decommissioning of the platform
There are two ways to release the license of a self-encrypting drive from ERAS: Uninitialize the drive from ERAS or use the instant Erase button located in the Security Control window. This will automatically uninitialize the drive.

Article ID: ERAS-002
Last Reviewed: December 29, 2009