Seagate ST3146755SS, ST3300555SS, ST373355SS manual Cooling, Air flow

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8.2Cooling

Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6.4.1, "Temperature."

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temper- ature measurement guidelines described in Section 6.4.1.

Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1 in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment.

If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 15. The air-flow pat- terns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guide- lines of Section 6.4.1 are met.

Note. Air flows in the direction shown (back to front) or in reverse direction (front to back)

Above unit

Under unit

Note. Air flows in the direction shown or in reverse direction (side to side)

Figure 15. Air flow

Above unit

Under unit

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Cheetah T10 SAS Product Manual, Rev. A

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Contents Cheetah T10 SAS Page Contents Defect and error management InstallationSeagate Technology support services Interface requirementsList of Figures Cheetah T10 SAS Product Manual, Rev. a Scope Cheetah T10 SAS disc driveCheetah T10 SAS Product Manual, Rev. a Standards, compliance and reference documents StandardsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Reference documents Cheetah T10 SAS Product Manual, Rev. a General description Standard features Media descriptionPerformance Factory-installed accessories ReliabilityFormatted capacities Programmable drive capacityOptions factory installed User-installed accessoriesPerformance characteristics Internal drive characteristicsAccess time Seek timeFormat command execution time minutes General performance characteristicsStart/stop time Prefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationReliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenanceHot plugging the drive 4 S.M.A.R.TControlling S.M.A.R.T Performance impactReporting control Determining ratePredictive failures Thermal monitorTemperature Log Page 0Dh Primary TemperatureReference Temperature Parameter Code DescriptionState of the drive prior to testing Invoking DSTShort and extended tests Short test Function Code 001bProduct warranty AbortShipping Product repair and return informationCheetah T10 SAS Product Manual, Rev. a Physical/electrical specifications AC power requirementsDC power requirements ST3300555SS DC power requirementsST3146755SS DC power requirements ST373355SS DC power requirementsST3146755SS Gbit mode Amps ST373355SS Gbit mode AmpsGeneral DC power requirement notes Power sequencingConducted noise immunity Current profilesTypical ST3300555SS drive current profiles Typical ST3146755SS drive current profiles Typical ST373355SS drive current profiles Power dissipation ST3300555SS in 3 Gbit operationST3300555SS in 1.5 Gbit operation ST3146755SS in 3 Gbit operation ST3146755SS in 1.5 Gbit operationST373355SS in 3 Gbit operation ST373355SS in 1.5 Gbit operationTemperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. OperatingShock and vibration ShockPackage size Packaged/product weight Drop height Recommended mountingAir cleanliness Vibration a. Operating-normalCorrosive environment Mechanical specifications AcousticsDefect and error management Drive internal defects/errorsDrive error recovery procedures Write retry count LBA cumulative, msec SAS system errors Background Media ScanMedia Pre-Scan Deferred Auto-Reallocation Idle Read After WriteInstallation Drive orientationCooling Air flowDrive mounting GroundingCheetah T10 SAS Product Manual, Rev. a SAS features Interface requirementsDual port support Scsi commands supported Commands supported by Cheetah T10 SAS family drivesCommand name Command code Supported Commands supported by Cheetah T10 SAS family drives Commands supported by Cheetah T10 SAS family drives Commands supported by Cheetah T10 SAS family drives Mode Sense data Inquiry dataCheetah T10 SAS inquiry data Bytes Data hexPage ST3300555SS Mode Sense data Mode PagesST3146755SS Mode Sense data ST373355SS Mode Sense data Miscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous statusSAS physical interface Datum B Physical characteristics Connector requirementsPin Signal name Signal type Electrical descriptionPin descriptions SAS pin descriptionsSignal characteristics PowerSAS transmitters and receivers Ready LED OutLED drive signal Differential signalsGeneral interface characteristics Eye masks Eye masks overviewReceive eye mask Jitter tolerance masksAbsolute amplitude Normalized time in UIPeak-to SinusoidalJitter Frequency in kHzTransmitter signal characteristics Signal characteristica Units GbpsReceiver signal characteristics Signal characteristic Units GbpsMaximum allowable jitter Gbps m, n Deterministic jitterqImpedance specifications Receiver jitter toleranceCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1Transmitter characteristics Impedance requirements Sheet 2Electrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah T10 SAS Product Manual, Rev. a Seagate Technology support services Warranty ServiceInternet MySeagate Spp.seagate.com Presales SupportData Recovery Services Authorized Service Centers Data Recovery ServicesFAX services-All Europe toll call Call center Presales and Technical Support Warranty ServiceToll-free support numbers Africa/Middle East support services Index NumericsPage SAS See also cooling Page Seagate Technology LLC

ST3300555SS, ST3146755SS, ST373355SS specifications

The Seagate ST373355SS, ST3146755SS, and ST3300555SS represent a range of high-performance hard drives designed for enterprise applications, particularly in server environments requiring reliability, speed, and high capacity.

The ST373355SS is a 73.5 GB SCSI hard drive operating at 15,000 RPM, which ensures rapid data access and superior performance, making it ideal for transactional applications and data-intensive tasks. With its 4 MB cache, the drive leverages fast read and write speeds, enhancing overall system responsiveness. The SCSI interface, operating at 80 MB/s, allows for high-speed data transfers, making it a suitable choice for demanding environments where quick access to information is critical. Its hot-swappable feature enables maintenance without shutting down the system, maximizing uptime and productivity.

The ST3146755SS, with a capacity of 146.8 GB, builds on the performance of its predecessor while introducing improvements in data handling and reliability. Operating at the same impressive 15,000 RPM, this model also features a 16 MB cache that greatly improves data throughput and access speed. The drive is designed to reduce latency, which is crucial for applications where timing is everything. It is equipped with advanced error recovery features and Seagate’s innovative PowerTrim technology, which improves power efficiency during read and write operations. The ST3146755SS also features a higher mean time between failures (MTBF), underscoring its reliability in high-demand environments.

Lastly, the ST3300555SS offers even greater capacity with 300 GB. This drive maintains the 15,000 RPM rotation speed and benefits from a 16 MB cache, providing a balance of speed and storage capacity. Its advanced SCSI interface supports not just speed but also data integrity, ensuring consistent performance during extensive data transfers. The drive is designed to handle workloads naturally associated with enterprise servers, data warehouses, and video editing applications. Its rugged build supports continuous operation and is tested for high-temperature environments to ensure durability.

In summary, the Seagate ST373355SS, ST3146755SS, and ST3300555SS hard drives are engineered for enterprise environments, combining impressive RPM speeds, significant storage capacities, and advanced technologies to deliver reliability, performance, and efficiency for critical applications. These hard drives represent Seagate's commitment to providing solutions that meet the rigorous demands of modern data environments.
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