Seagate ST3600057SS Random number generator RNG, Drive locking, Data bands, Cryptographic erase

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7.2.3Default password

When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random value is printed on the drive label and it can be read by the host electronically over the I/O. After receipt of the drive, it is the responsibility of the owner to use the default MSID password as the authority to change all other passwords to unique owner-specified values.

7.3Random number generator (RNG)

The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to pro- vide random numbers to the host for system use, including using these numbers as Authentication Keys (pass- words) for the drive’s Admin and Locking SPs.

7.4Drive locking

In addition to changing the passwords, as described in Section 7.2.3, the owner should also set the data access controls for the individual bands.

The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if power is lost. This scenario occurs if the drive is removed from its cabinet. The drive will not honor any data read or write requests until the bands have been unlocked. This prevents the user data from being accessed without the appropriate credentials when the drive has been removed from its cabinet and installed in another system.

When the drive is shipped from the factory, the firmware download port is locked and the drive will reject any attempt to download new firmware. The drive owner must use the SID credential to unlock the firmware down- load port before firmware updates will be accepted.

7.5Data bands

When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as the Global Data Band) which comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a start LBA and an LBA range. The real estate for this band is taken from the Global Band. An additional 14 Data Bands may be defined in a similar way (Band2 through Band15) but before these bands can be allocated LBA space, they must first be individually enabled using the EraseMaster password.

Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning at LBA (x+1).

Each data band has its own drive-generated encryption key and its own user-supplied password. The host may change the Encryption Key (see Section 7.6) or the password when required. The bands should be aligned to 4K LBA boundaries.

7.6Cryptographic erase

A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the drive to change the data encryption key for a particular band. Once changed, the data is no longer recoverable since it was written with one key and will be read using a different key. Since the drive overwrites the old key with the new one, and keeps no history of key changes, the user data can never be recovered. This is tanta- mount to an instantaneous data erase and is very useful if the drive is to be scrapped or redispositioned.

7.7Authenticated firmware download

In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts download files which have been cryptographically signed by the appropriate Seagate Design Center.

Three conditions must be met before the drive will allow the download operation:

1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.

Cheetah 15K.7 SAS Product Manual, Rev. A

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Contents Standard models Self-Encrypting Drive models Cheetah 15K.7 SASPage Contents Installation Defect and error managementAbout self-encrypting drives Interface requirementsSeagate Technology support services Cheetah 15K.7 SAS Product Manual, Rev. a Model Number Capacity Self-Encrypting Drive SED ScopeStandards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibilityEuropean Union Restriction of Hazardous Substances RoHS ComplianceReference documents General description Performance Standard featuresMedia description Reliability Factory-installed optionsFormatted capacities Programmable drive capacityInternal drive characteristics Performance characteristicsAccess time Seek timeStart/stop time Format command execution time minutesGeneral performance characteristics Cache operation Prefetch/multi-segmented cache controlPrefetch operation Caching write dataError rates Reliability specificationsRecoverable Errors Unrecoverable ErrorsSeek errors Reliability and serviceInterface errors Preventive maintenanceControlling S.M.A.R.T 4 S.M.A.R.TPerformance impact MillisecondsDetermining rate Reporting controlPredictive failures Thermal monitorState of the drive prior to testing Temperature Log Page 0Dh Parameter Code DescriptionDrive Self Test DST DST failure definitionShort and extended tests Invoking DSTShort test Function Code 001b Extended test Function Code 010bAbort Product warrantyShipping Product repair and return informationDC power requirements Physical/electrical specificationsAC power requirements ST3600057SS ST3600957SS Gbit mode Amps 600 GB DC power requirementsST3450857SS ST3450757SS Gbit mode Amps 450 GB DC power requirementsST3300657SS ST3300557SS Gbit mode Amps 300 GB DC power requirementsCurrent profiles Power sequencingConducted noise immunity Typical 600GB current profiles Typical 300GB current profiles ST3600057SS model Power dissipationST3450857SS model ST3300657SS model TemperatureEnvironmental limits Effective altitude sea level Relative humidityShock and vibration ShockPackage size Packaged/product weight Drop height Recommended mounting VibrationAcoustics Air cleanlinessCorrosive environment RoHS compliance statementPhysical dimensions Mechanical specificationsAdmin SP Controlled accessAbout self-encrypting drives Data encryptionRandom number generator RNG Authenticated firmware downloadDrive locking Data bandsSupported commands Power requirementsDrive error recovery procedures Defect and error managementDrive internal defects/errors Page Background Media Scan SAS system errorsIdle Read After Write Media Pre-ScanDeferred Auto-Reallocation Cooling InstallationDrive orientation Grounding Drive mountingInterface requirements SAS featuresCommands supported by Cheetah 15K.6 SAS family drives Scsi commands supportedCommand name Command code Supported Dual port supportCommands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Cheetah 15K.7 inquiry data Bytes Data hex Inquiry dataMode Sense data Mode Pages 10.3.2.1 ST3600057SS and ST3600957SS Mode Sense dataDEF CHG Mode Data Header Block Descriptor Mode Pages 10.3.2.2 ST3450857SS and ST3450757SS Mode Sense dataDEF CHG Read Capacity Data Buffer C D E F Mode Pages 10.3.2.3 ST3300657SS and ST3300557SS Mode Sense dataMiscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous statusPhysical interface SAS physical interfaceDatum B Connector requirements Physical characteristicsElectrical description Pin Signal name Signal typePin descriptions SAS pin descriptionsPower Signal characteristicsSAS transmitters and receivers Ready LED OutLED drive signal SAS-2 Specification complianceDifferential signals General interface characteristicsTechnical Support Seagate Technology support servicesPresales Support Data Recovery Services Call CenterToll-freeDirect dialFAX Warranty ServiceData Recovery Services Authorized Service Centers Cheetah 15K.7 SAS Product Manual, Rev. a Numerics IndexPage SAS Smart
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