Seagate ST336807FC General DC power requirement notes, Conducted noise immunity, Power sequencing

Page 38

[5]See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.

[6]Operating condition is defined as random 8 block reads at 254 I/Os per second.

Current and power specified at nominal voltages. Decreasing +5 volt supply by 5% increases 5 volt cur- rent by <0.5%. Decreasing +12 volt supply by 5% increases 12 volt current by 1.4%.

[7]During idle, the drive heads are relocated every 60 seconds to a random location within the band from track zero to one-fourth of maximum track.

General DC power requirement notes.

1.Minimum current loading for each supply voltage is not less than 1.2% of the maximum operating current shown.

2.The +5V and +12V supplies should employ separate ground returns.

3.Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device.

4.Parameters, other than spindle start, are measured after a 10-minute warm up.

5.No terminator power.

6.2.1Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak to peak measurements and apply at the drive power con- nector.

+5

V

=

250 mV pp from 100 Hz to 20 MHz.

+12

V

=

800 mV pp from 100 Hz to 8 KHz.

 

 

 

450 mV pp from 8 KHz to 20

KHz.

 

 

 

250 mV pp from 20 KHz to 5

MHz.

6.2.2Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.

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Cheetah 10K.7 36GB FC Product Manual, Rev. A

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Contents Cheetah 10K.7 FC Page Cheetah 10K.7 FC Page Revision Date Sheets Affected Revision status summary sheetRev. a 05/04/05 All. Initial release Page Contents Installation Physical/electrical specificationsDefect and error management Interface requirementsSeagate Technology support services Viii Cheetah 10K.7 36GB FC Product Manual, Rev. a List of Figures Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Scope Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityElectromagnetic compliance European Union Restriction of Hazardous Substances RoHSReference documents Fibre Channel Interface ManualCheetah 10K.7 36GB FC Product Manual, Rev. a General description Standard features Media descriptionFormatted capacities PerformanceReliability Programmable drive capacityUser-installed accessories Factory-installed accessoriesFactory-installed options ST336807FC Performance characteristicsInternal drive characteristics Format command execution time in minutes Seek performance characteristicsAccess time Generalized performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Caching write data Prefetch operation Cheetah 10K.7 36GB FC Product Manual, Rev. a Recoverable Errors Reliability specificationsError rates Reliability and service Controlling S.M.A.R.T Hot plugging the drive4 S.M.A.R.T Reporting control Performance impactMilliseconds Determining rateDrive Self Test DST Temperature Log page 0DhParameter Code Description Implementation State of the drive prior to testingDST Failure Definition Invoking DSTExtended test Function Code 010b Product warrantyShort test Function Code 001b Log page entriesShipping Product repair and return informationDC power requirements Physical/electrical specificationsAC power requirements ST336807FC DC power requirementsConducted noise immunity General DC power requirement notesPower sequencing Typical ST336807FC drive, 2 Gbit, +12V current profile Typical ST336807FC drive, 2 Gbit, +5V current profilePower dissipation ST336807FCRelative humidity TemperatureEnvironmental limits Effective altitude sea levelShock Package size Packaged/product weight Drop heightShock and vibration Recommended mounting Corrosive environment Air cleanlinessVibration Mechanical specifications AcousticsMounting configuration dimensions Drive error recovery procedures Defect and error managementDrive internal defects/errors 77.7 Media Pre-Scan FC-AL system errorsBackground Media Scan Cheetah 10K.7 36GB FC Product Manual, Rev. a Installation Drive ID/option selectionLED connections Physical interface Drive FrontCooling 1 J6 connector requirementsDrive orientation Drive mounting GroundingLink services supported FC-AL featuresFibre Channel link service frames Type of frame Link serviceFibre Channel task management responses Fibre Channel task management functionsFibre Channel Scsi FCP task management functions FC Scsi FCP response codesBytes Fibre Channel port loginNPort login Plogi payload Fibre Channel Process Login Fibre Channel port login acceptNPort Login Accept ACC payload Process Login Plri payloadFibre Channel fabric login Fibre Channel Process Login AcceptProcess Login Accept ACC payload Fabric Login Flogi payloadFibre Channel fabric accept login Fabric Login Accept ACC payloadFC-AL options supported Dual port supportFibre Channel Arbitrated Loop options Option SupportedCommand code Supported Command name Scsi commands supportedSupported commands Supported commands Supported commands Supported commands Supported commands Cheetah 10K.7 FC inquiry data Mode Sense dataInquiry data Bytes Data hexPage DEF CHG Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusPhysical description Physical characteristicsFC-AL physical interface Connector requirements Part description Positions Part number FeaturesJ6 connector dimensions Electrical descriptionFC-SCA pin descriptions Pin Signal name Signal typePin descriptions FC-AL transmitters and receivers PowerFault LED Out Active LED Out Enable port bypass signalsNormal command activity LED status Active LED Out conditionsMotor start controls Motor start control signalsParallel Enclosure Services Interface ESI 11 SEL6 through SEL0 ID linesHex Dec SettingArbitrated loop physical address Alpa values Signal characteristics Differential Pecl output characteristics LED driver signalsLED drive signal Differential Pecl input characteristicsEye diagram data values Link rate GHzCheetah 10K.7 36GB FC Product Manual, Rev. a Presales Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Technical SupportData Recovery Services Warranty ServiceData Recovery Services Authorized Service Centers Toll-free support numbers FAX services-All Europe toll callCall center Presales and Technical Support Warranty Service Asia/Pacific support services Publication feedback survey Cheetah 10K.7 36GB FC Product Manual, Rev. a Index NumericsFAN Flogi PBC Page See also cooling