advertisement
21.7 MSID
The MSID is set for each drive at the time of manufacturing to the serial number concatenated 4 times, to create a 32 byte password. Thus, as an example, if the serial number of a drive is abcd1234, the MSID would then be set to abcd1234abcd1234abcd1234abcd1234. In TCG use cases such as “erase” or “repurpose”, this will be the MSID that is restored to the drive.
HGST serial numbers are unique and are generated according to the following general rules:
•
Maximum length of the serial number is 8 characters
•
Serial numbers do not contain the characters “I”or “O”.
21.8 Logging
HGST logging functions will not record any sensitive data such as customer plain text data, passwords, encryption keys or wrapping keys.
.
21.9 Number of Sessions
The HGST 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.
21.10 Number of Bands
The Enterprise SSC specification calls for support of up to 1024 bands. The HGST implementation supports a maximum of 64 bands.
21.11 Number of COMIDs
The HGST Enterprise SSC implementation supports 2 COMIDs, the minimum requirement in the Enterprise SSC specification. Only 1 comid can be in use at any time.
21.12 Locked and Unlocked Behavior
21.12.1 T10 SCSI commands
The table below describes how basic T10 SCSI commands behave on encryption drives in the locked and unlocked states.
HGST Ultrastar C10K600 (SAS) Hard Disk Drive Specification
306
Table 236: T10
SCSI Commands Behavior Table
Command
FORMAT UNIT (04)
Unlocked
OEM
INQUIRY (12)
LOG SELECT (4C)
LOG SENSE (4D)
OEM
OEM
OEM
Locked
Command can’t be executed when locked. Must unlock with MSID or password, before formatting.
OEM
OEM
OEM-no access to customer data, will get some log information.
MODE SELECT (15)
MODE SELECT (55)
MODE SENSE (1A)
MODE SENSE (5A)
PERSISTENT RESERVE IN (5E)
PERSISTENT RESERVE IN (5F)
PRE-FETCH (34)
READ (6) - (08)
READ (10) - (28)
READ (12) - (A8)
READ (16) - (88)
READ (32) - (7F/09)
READ BUFFER (3C)
READ CAPACITY (10) - (25)
READ CAPACITY (16) (9E/10)
READ DEFECT DATA (37)
READ DEFECT DATA (B7)
READ LONG (3E)
REASSIGN BLOCKS (07)
RECEIVE DIAGNOSTICS RESULTS (1C)
RELEASE (17)
RELEASE (57)
REPORT DEVICE IDENTIFIER (A3/05)
REPORT LUNS (A0)
REPORT SUPPORTED OPERATION
CODES (A3/0C)
REPORT SUPPORTED TASK
MANAGEMENT FUNCTIONS (A3/0D)
REQUEST SENSE (03)
RESERVE (16)
RESERVE (56)
REZERO UNIT (01)
SEEK (6) - (0B)
SEEK (10) - (2B)
SEND DIAGNOSTIC (1D)
SET DEVICE IDENTIFIER (A4/06)
START STOP UNIT (1B)
SYNCHRONIZE CACHE (10) - (35)
SYNCHRONIZE CACHE (16) - (91)
TEST UNIT READY (00)
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
MSID only - limits DRAM accessibility. This is a read function.
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
OEM. Sensitive data cannot be snapshotted from DRAM.
OEM
OEM
OEM
OEM
Ent_A authorized only
OEM
OEM
OEM
OEM
OEM.
OEM.
OEM.
OEM
OEM
OEM
OEM
OEM
OEM
OEM
Customer specific.
OEM.
OEM
OEM
OEM
OEM
HGST Ultrastar C10K600 (SAS) Hard Disk Drive Specification
307
VERIFY (2F)
VERIFY (12) - (AF)
VERIFY (16) - (8F)
VERIFY (32) - (7F/0A)
WRITE (6) - (0A)
WRITE (10) - (2A)
WRITE (12) - (AA)
WRITE (16) - (8A)
WRITE (32) - (7F/0B)
WRITE AND VERIFY (10) - (2E)
WRITE AND VERIFY (12) - (AE)
WRITE AND VERIFY (16) - (8E)
WRITE AND VERIFY (32) - (7F/0C)
WRITE BUFFER (3B)
(T10)
WRITE BUFFER (3B)
(For FW download)
WRITE LONG (3F)
WRITE SAME (41)
WRITE SAME (16) - (93)
WRITE SAME (32) - (7F/0D)
SECURITY_IN
SECURITY_OUT
OEM
OEM
OEM
Access to customer data but does not return data back to customer. CRC checking is ignored but still do ECC checking, and is executable on locked LBAs.
Access to customer data but does not return data back to customer. CRC checking is ignored but still do ECC checking, and is executable on locked LBAs.
Access to customer data but does not return data back to customer. CRC checking is ignored but still do ECC checking, and is executable on locked LBAs.
OEM Access to customer data but does not return data back to customer. CRC checking is ignored but still do ECC checking, and is executable on locked LBAs.
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM
OEM (write
DRAM onto drive)
FW is signed and downloaded.
OEM
OEM
OEM
OEM
OEM
OEM
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
OEM.
OEM. The write buffer command only functions to write to the buffer.
Per TCG and T10 specification. Ent_A authorized only.
Ent_A authorized only
Ent_A authorized only
Ent_A authorized only
Per TCG spec. Contains TCG payload.
Per TCG spec. Contains TCG payload.
HGST Ultrastar C10K600 (SAS) Hard Disk Drive Specification
308
advertisement
Related manuals
advertisement