Seagate ST9120414AS ATA Security policy exceptions, ATA Security Erase Unit bits, Word Content

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4.2.1ATA Security policy exceptions

In the ATA Security Interface mode, the drive conforms to the ATA Security Policy, except the following desir- able exceptions to implement the desired Momentus 7200 FDE.1 SATA behavior:

Upon execution of the secure erase sequence, the drive will have the following behavior:

•All secure erase modes will instantaneously delete the encryption key rendering all user data unintelligible.

•A new encryption key will be generated inside the drive replacing the previous encryption key.

•The new encryption/decryption key will be applied to the data for all subsequent writes/reads prior to the next secure erase sequence.

•The user password will be cleared to a null value.

•The master password will retain the current value per the ATA specification.

Note. On completion of this sequence, the user is assured that all sectors on the drive are unintelligible and the drive is returned to the default factory state. It is then immediately ready for disposal or repurpos- ing.

The ATA Security Erase Unit Command provides for normal and enhanced erase modes as follows:

Table 6:	ATA Security Erase Unit bits

Word		Content

0		Control word

		Bit 0		Identifier	0 = Compare User password

					1 = Compare Master password

		Bit 1		Erase mode	0 = Normal Erase

					1 = Enhanced Erase

		Bit (15:2)		Reserved

1 - 16		Password (32 bytes)

17 - 255		Reserved

Choosing enhanced erase mode will simply perform the cryptographic erase described above, and return sta- tus almost immediately. This is the recommended option.

To maintain consistency with the ATA Security specification, Momentus 7200 FDE.1 SATA drives provide an option to perform the Normal Erase mode.

Choosing normal erase will result in the drive performing the cryptographic erase which is the same as choos- ing enhanced erase.

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Contents Momentus 7200 FDE.1 Sata Page Contents Compatibility summary Seagate Technology support servicesSerial ATA interface List of Figures Page System requirements IntroductionFDE benefits Security feature matrixFDE drive feature list About Momentus 7200 FDE.1 Sata disc drivesDrive state upon shipment Momentus 7200 FDE.1 Sata Product Manual, Rev. a Specification summary table Drive specificationsSystem will display the warranty information for your drive Cylinders Read/write heads Sectors per track 16,383 Default logical geometryLBA mode Formatted capacityRecording and interface technology Physical characteristicsDrive specification Physical organizationTime to ready Typical Max @ 25C Seek timeStart/stop times Typical seek times msec ReadPower specifications Voltage tolerance Typical current profileConducted noise Idle mode Power-management modesPower management modes Active modeEnvironmental specifications Vibration ShockOperating shock Nonoperating shockIdle Performance seek AcousticsElectromagnetic immunity Test for Prominent Discrete Tones PDTsPerformance Reference Test Description Level Standard Reliability Free Fall Protection featureSafety certification Measurement type SpecificationFCC verification Electromagnetic compatibilityKorean RRL Australian C-Tick N176Page China Restriction of Hazardous Substances RoHS Directive Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensionsMomentus 7200 FDE.1 Sata drive label example Drive integrationConsumer usage Security Erase--ATA security commandsDrive installation Secure Erase procedurePage Serial ATA interface Pin Function Definition Serial ATA connector pin definitionsSignal ATA Security Erase Unit bits Word ContentATA Security policy exceptions Ident Value BIT set Bit Description DriveTrust Mode supportDriveTrust Identify Full Disc Encryption Identify Full Disc Encryption supportNormal Commands Supported ATA commandsSupported commands Read LOG EXT SET MAX Freeze Lock ATA Security API DriveTrust Security API Code Command Locked Unlocked FrozenWord Description Value Identify Device commandXxxxH Description if bit is set to Bit Word Bit Word Ultra DMA mode 0 is supportedBit Word Set Features command0CH Set Features command valuesCode in features register A.R.T. command 7 S.M.A.R.T. commandsM.A.R.T. commands Momentus 7200 FDE.1 Sata Product Manual, Rev. a Tested Bios versions with Windows XP SP2 Installation considerationsSystem Compatibility using WIndows XP SP2 Bios versions tested in ATA Security modeAMD Phoenix Award Dell AMI VVPGI635 DriveTrust compatibility verification DriveTrust compatibility BiosTian YI F30A ATA Operating system versions tested Manufacturer Version/Release Compatibility test configurationsSupported operating systems Technical Support InternetPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE TPI Momentus 7200 FDE.1 Sata Product Manual, Rev. a Page Seagate Technology LLC