Seagate ST9146802SS, ST973402SS manual Conducted noise immunity, Power sequencing, Current profiles

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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 connector.


+5v	=	250 mV pp from 0 to	100 kHz to 20 MHz.
+12v	=	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.

6.2.3Current profiles

The +12V and +5V current profiles for the ST9146802SS and ST973402SS models are shown below.

Figure 2. ST9146802SS current profile

Savvio 10K.2 SAS Product Manual, Rev. D

Image 33

Contents ST9146802SS ST973402SS Savvio 10K.2 SASPage Contents Installation Defect and error managementSeagate Technology support services Interface requirementsSavvio 10K.2 SAS disc drive List of FiguresPage Savvio 10K.2 SAS disc drive ScopeSavvio 10K.2 SAS Product Manual, Rev. D Standards Applicable standards and reference documentationElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance for the European Union Electromagnetic complianceAustralian C-Tick Korean MICEuropean Union Restriction of Hazardous Substances RoHS Reference documentsSavvio 10K.2 SAS Product Manual, Rev. D General description Standard features Media descriptionPerformance Reliability Factory-installed accessoriesFormatted capacities Programmable drive capacityFactory-installed options Internal drive characteristics Performance characteristicsSeek performance characteristics Access timeGeneral performance characteristics Format command execution time for 512-byte sectors minutesStart/stop time Prefetch/multi-segmented cache controlCache operation Prefetch operation Caching write dataPage Savvio 10K.2 SAS Product Manual, Rev. D Error 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 monitorDrive Self Test DST Temperature Log Page 0Dh Parameter Code DescriptionDST failure definition ImplementationInvoking DST State of the drive prior to testingShort and extended tests Short test Function Code 001bLog page entries Product warrantyAbort ShippingProduct repair and return information AC power requirements Physical/electrical specificationsDC power requirements ST9146802SS DC power requirementsST973402SS DC power requirements General DC power requirement notesST973402SS Gbit mode Amps Power sequencing Conducted noise immunityCurrent profiles ST973402SS current profile Power dissipation ST9146802SS in 3 Gbit operationST973402SS in 3 Gbit operation Environmental limits TemperatureEffective altitude sea level Relative humidityShock and vibration ShockRecommended mounting Package size Packaged/product weight Drop heightAir cleanliness VibrationCorrosive environment Acoustics Mounting configuration dimensions Mechanical specificationsSavvio 10K.2 SAS Product Manual, Rev. D Defect and error management Drive internal defects/errorsDrive error recovery procedures Page Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-ReallocationIdle Read After Write Drive orientation InstallationAir flow CoolingGrounding Drive mountingSavvio 10K.2 SAS Product Manual, Rev. D Interface requirements SAS featuresDual port support Scsi commands supported Commands supported by Savvio SAS family driveCommand name Command code Supported Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Inquiry data Mode Sense dataSavvio inquiry data Bytes Data hexPage Mode Data Header 08 8b b9 98 00 00 02 Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous statusSAS physical interface Datum B Section C C Section a a Connector requirements Physical characteristicsElectrical description Pin descriptionsPower Signal characteristicsSAS transmitters and receivers Ready LED OutDifferential signals LED drive signalGeneral interface characteristics Eye masks Eye masks overviewJitter tolerance masks Receive eye maskSinusoidal Peak-toJitter Frequency in kHzSignal characteristica Units Gbps Transmitter signal characteristicsSignal characteristic Units Gbps Receiver signal characteristicsMaximum allowable jitter Gbps m, n Deterministic jitterqReceiver jitter tolerance Impedance specificationsCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1Transmitter characteristics Impedance requirements Sheet 2Electrical TxRx connections = -5,437dB Tctf ISI loss example at 1.5 Gbps Receiver characteristicsInternet Seagate Technology support servicesPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Numerics IndexPage SAS See also cooling Page Seagate Technology LLC

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ST973402SS, ST9146802SS specifications

The Seagate ST973402SS and ST9146802SS are high-performance, enterprise-grade hard drives designed to meet the demanding needs of data-intensive applications. These drives are part of Seagate's Savvio and Barracuda product lines, aimed specifically at businesses and institutions requiring reliability, speed, and efficiency in storage solutions.

The ST973402SS is a 73GB, 2.5-inch hard drive, while the ST9146802SS offers a larger capacity of 146GB. Both models utilize a 10,000 RPM spindle speed, which significantly enhances their ability to handle fast data read and write operations. This speed ensures reduced latency and improved overall performance, making them ideal for environments where rapid access to data is crucial.

One of the standout features of these drives is their support for Serial Attached SCSI (SAS) interface. SAS technology provides a point-to-point connection, which allows for increased data transfer rates compared to traditional SATA drives. The ST973402SS and ST9146802SS are capable of transferring data at speeds of up to 600 MB/s, facilitating efficient data transfers in enterprise systems.

In terms of reliability, both models offer advanced features designed to improve data integrity and durability. They are built to withstand high workloads, with an annualized workload rate of up to 550 TB per year. This makes them well-suited for applications like databases and transactional storage, where sustained performance is required. Additionally, the drives feature Seagate’s PowerFit technology, which optimizes performance while minimizing power consumption.

To enhance data security, the drives come equipped with self-encrypting technology, ensuring that sensitive data is protected through hardware-based encryption. This is particularly important in environments where data breaches can lead to significant operational impacts.

The drives are also designed to operate efficiently in terms of thermal management, featuring robust heat dissipation capabilities. This helps to maintain optimal performance levels while prolonging the lifespan of the drives.

Overall, the Seagate ST973402SS and ST9146802SS are robust and reliable hard drives that cater to the needs of enterprise environments, combining high capacity, exceptional speed, advanced security features, and energy efficiency to help businesses maintain and manage large volumes of data effectively. With their proven performance and innovative technologies, these drives are well-equipped to support a wide range of applications in modern data centers.