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10.21.8 MSID
The MSID is set for each drive at the time of manufacturing to a random 32-byte value, based on TCG rules. The
MSID is programmatically accessible via TCG tables. The MSID value is stored in the PIN column of the MSID
C_PIN object.
10.21.9
Logging
Western Digital logging functions will not record any sensitive data such as customer plain text data, passwords,
encryption keys or wrapping keys.
10.21.10 Number of Sessions
The Western Digital implementation supports 1 active session at a time. In the case when a session is active and a
new session is requested, the drive answers the host with SP_BUSY. This covers the following 2 scenarios.
• If an SP is in session and an attempt is made to start a second session with the same SP.
• If an SP is in session and an attempt is made to start a second session with a different SP.
10.21.11 Number of Bands
The Enterprise SSC specification calls for support of up to 1023 bands. The Western Digital implementation supports
a maximum of 15 bands (not including Band 0).
10.21.12 Number of COMIDs
The Western Digital Enterprise SSC implementation supports at least 2 COMIDs, the minimum requirement in the
Enterprise SSC specification (some latest products may support 4 COMIDs). Only 1 COMID can be in use at any
time.
10.21.13 PSID
Western Digital SED hard disk drives include a 32-byte PSID number (and a machine-readable barcode encoding of
the same) on the product label. The PSID number is used to provide evidence of physical presence when required
by the product’s security protocols (such as for the TCG-Revert operation) and is included on Western Digital SED
drives to enhance the product’s security.
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Hard Disk Drive Specification