Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification

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21.5

TCG SSC Tables

Two copies of all TCG SCC tables and data structures are stored in the RID; one is used as a primary copy and the

other as a backup copy. The backup copy is used in the event the primary copy becomes corrupted. Each time a

write is executed to any TCG table, both the primary and backup copies of the tables are updated and saved in the

RID. In the case of a corrupted copy, the good copy is always used to restore the corrupted copy to the correct

state. If both copies of the tables become corrupted during operation, the tables will be reinitialized to default

values automatically, and this will result in a key mismatch error when a read is attempted.

The default values in the TCG tables created at the time of manufacturing are per the TCG SSC specification. The

following tables contain VU (Vendor Unique) entries, which are set at the time of manufacturing.

• Admin SP C_PIN table

• Locking C_PIN table

• K_AES_256 table

• Locking SP Locking Access Control table

• Locking Info Table

• Locking SP Locking Table

The VU entries for these tables are specified below. In addition, explanation of default values is given for non-VU

entries that require it.

21.5.1

Admin SP C_PIN Table and Locking SP C_PIN Table

Per TCG SSC specification, the PIN is set to the MSID at manufacturing time. HGST has specified the MSID to be

the serial number of the drive concatenated 4x. Try Limit is set to 0, meaning that there is no limit. Tries is set 0,

meaning that there have been no fail attempts. Persistence is set to 0, meaning the “Tries” value does not persist

through power cycles (The “Tries” value is reset to 0 after successful attempt or a power cycle).

Table 284 HGST Implementation of Admin SP_CPIN & Locking C_PIN

Try Limit

Tries

Persistence

MSID