Cryptographic erase, Power requirements | Seagate ST3600057FC

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.

2.The download file must be signed and authenticated.

3.As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be applicable to the correct drive model, and have compatible revision and customer status.

7.8Power requirements

The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply. See the tables in Section 6.2 for power requirements on the standard (non-SED) drive models.

7.9Supported commands

The SED models support the following two commands in addition to the commands supported by the standard (non-SED) models as listed in Table 16:

•Security Protocol Out (B5h)

•Security Protocol In (A2h)

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Seagate ST3600057FC manual Cryptographic erase, Authenticated firmware download, Power requirements, Supported commands

Contents

Standard models Self-Encrypting Drive models Cheetah 15K.7 FCPage Contents Interface requirements Defect and error managementInstallation About self-encrypting drives Seagate Technology support services Cheetah 15K.7 FC Product Manual, Rev. a Model Number Capacity Self-Encrypting Drive SED Scope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibility European Union Restriction of Hazardous Substances RoHS Ncits TR-20 Reference documents General description Standard features Formatted capacities Media descriptionPerformance Reliability User-installed accessories Factory-installed optionsProgrammable drive capacity Access time Performance characteristicsInternal drive characteristics Seek performance characteristics Start/stop time General performance characteristicsPrefetch/multi-segmented cache control Caching write data Cache operation Prefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable Errors Preventive maintenance Reliability and serviceSeek errors Interface errors Milliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impact Thermal monitor Temperature Log Page 0DhDetermining rate Predictive failures Implementation State of the drive prior to testingDrive Self Test DST DST failure definition Log page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010b Shipping Product warrantyProduct repair and return information AC power requirements Physical/electrical specificationsDC power requirements ST3450857FC DC power requirements Gbit Amps ST3600057FC DC power requirements Gbit Amps ST3300657FC DC power requirements Gbit Amps General DC power requirement notes Conducted noise immunity Power sequencingCurrent profiles Typical ST3450857FC current profiles Typical ST3300657FC current profiles 600GB model Power dissipation 450GB models Environmental limits Temperature a. Operating300GB models Effective altitude sea level a. Operating Relative humidity Shock and vibration Package size Packaged/product weight Drop heightShock Recommended mounting Corrosive environment Air cleanlinessVibration a. Operating-normal Acoustics Electromagnetic susceptibility See Section RoHS compliance statement Mounting configuration dimensions Mechanical specifications Data encryption Controlled accessAdmin SP About self-encrypting drives Data bands Default passwordRandom number generator RNG Drive locking Cryptographic erase Authenticated firmware downloadPower requirements Supported commands Drive internal defects/errors Defect and error managementDrive error recovery procedures Page These values are subject to change FC-AL system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Idle Read After Write Drive ID/option selection InstallationDrive orientation Air flow Cooling Grounding Drive mounting Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frame Fibre Channel task management responses Fibre Channel task management functionsFC Scsi FCP response codes Function name Response code NPort login Plogi payload Bytes Fibre Channel port login NPort Login Accept ACC payload Bytes Fibre Channel port login acceptProcess Login Plri payload Fabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload Bytes Fabric Login Accept ACC payload Bytes Fibre Channel fabric accept login FC-AL options supported Scsi commands supportedDual port support Fibre Channel Arbitrated Loop options Supported commands Cheetah 15K.7 FC Product Manual, Rev. a Cheetah 15K.7 FC Product Manual, Rev. a Background Medium Scan 15h Inquiry data Mode Sense dataCheetah 15K.7 FC inquiry data Bytes Data hex Page Mode Data Header Block Descriptor Ec b2 5c 00 00 02 Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or condition FC-AL physical interface Physical characteristicsPhysical description Electrical description Connector requirementsPin descriptions Pin Signal name Signal type FC-SCA pin descriptions Pin Signal name Signal typeFC-AL transmitters and receivers Fault LED Out Power Active LED Out Enable port bypass signalsMotor start controls 10.5.11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESI Arbitrated loop physical address Alpa values SettingHex Dec TTL input characteristics provides the TTL characteristics Signal characteristicsDevice control codes FC Differential output LED driver signalsFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Numerics Index Devctrlcode FCP Mtbf Page See also cooling Page Cheetah 15K.7 FC Product Manual, Rev. a Page Seagate Technology LLC