Seagate ST3450856FC manual Receive eye diagram Eye diagram data values Link rate GHz

Page 83

Figure 19 provides the data valid eye diagram for typical and minimum requirements to recover data at the specified interface error rate. The inputs are AC coupled on the drive.

Vin (mv)

941 ps

659 ps

376 ps

Typical

Minimum

Figure 19. Receive eye diagram

Table 36: Eye diagram data values

 

 

Link rate

 

 

 

 

 

 

 

 

 

1 GHz

2 GHz

4 GHz

 

 

 

 

Bit time

941 ps

470 ps

235 ps

 

 

 

 

XMIT eye

725 ps min.

315 ps min.

1581/1132

RCV eye

Typical

659 ps

305 ps

145 ps

 

 

 

 

Minimum

395 ps

226 ps

113 ps

 

 

 

 

 

 

1.Short Ideal load.

2.End of compliance channel.

Cheetah 15K.6 FC Product Manual, Rev. D

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Contents ST3146356FC ST3450856FCST3300656FC Page Contents Interface requirements Physical/electrical specificationsDefect and error management InstallationSeagate Technology support services Cheetah 15K.6 FC Product Manual, Rev. D Model Number Full Disk Encryption FDE ScopeCheetah 15K.6 FC Product Manual, Rev. D Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-20 Reference documentsCheetah 15K.6 FC Product Manual, Rev. D General description Standard features Formatted capacities Media descriptionPerformance ReliabilityUser-installed accessories Factory-installed optionsAccess time Performance characteristicsInternal drive characteristics Seek performance characteristics176 144 100 Format command execution time minutesGeneral performance characteristics Start/stop timeCaching write data Prefetch/multi-segmented cache controlCache operation Prefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsMilliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impactThermal monitor Temperature Log Page 0DhDetermining rate Predictive failuresImplementation State of the drive prior to testingDrive Self Test DST DST failure definitionLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bProduct repair and return information Product warrantyShipping Cheetah 15K.6 FC Product Manual, Rev. D DC power requirements Physical/electrical specificationsAC power requirements ST3450056FC DC power requirements Gbit Amps ST3450856FC DC power requirements Gbit AmpsST3300056FC DC power requirements Gbit Amps ST3300656FC DC power requirements Gbit AmpsST3146756FC DC power requirements Gbit Amps ST3146356FC DC power requirements Gbit AmpsCurrent profiles General DC power requirement notesPower sequencing Conducted noise immunityTypical ST3450856FC current profiles Typical ST3450056FC current profiles Typical ST3300656FC current profiles Typical ST3300056FC current profiles Typical ST3146356FC current profiles Typical ST3146756FC current profiles 450GB models Power dissipation300GB models 146GB models TemperatureEnvironmental limits Effective altitude sea level Relative humidityShock Package size Packaged/product weight Drop heightShock and vibration Recommended mounting Corrosive environment Air cleanlinessVibration AcousticsRoHS compliance statement Mounting configuration dimensions Mechanical specificationsDrive error recovery procedures Defect and error managementDrive internal defects/errors Page Background Media Scan FC-AL system errorsIdle Read After Write Media Pre-ScanDeferred Auto-Reallocation Cooling InstallationDrive ID/option selection Drive orientationGrounding Drive mountingPage Cheetah 15K.6 FC Product Manual, Rev. D Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameFC Scsi FCP response codes Function name Response code Fibre Channel task management functionsFibre Channel task management responses NPort login Plogi payload Bytes Fibre Channel port loginProcess Login Plri payload Fibre Channel port login acceptFibre Channel Process Login NPort Login Accept ACC payload BytesFabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload BytesFabric Login Accept ACC payload Bytes Fibre Channel fabric accept loginFC-AL options supported Scsi commands supportedDual port support Fibre Channel Arbitrated Loop optionsSupported commands Cheetah 15K.6 FC Product Manual, Rev. D Cheetah 15K.6 FC Product Manual, Rev. D Supported commands Cheetah 15K.6 FC inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mode Data Header 000000 Cheetah 15K.6 FC Product Manual, Rev. D Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical description Physical characteristicsFC-AL physical interface Pin descriptions Connector requirementsElectrical description FC-AL transmitters and receivers FC-SCA pin descriptions Pin Signal name Signal typePin Signal name Signal type Fault LED Out PowerMotor start controls Enable port bypass signalsActive LED Out 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIHex Dec SettingArbitrated loop physical address Alpa values Device control codes Signal characteristicsTTL input characteristics FC Differential input LED driver signalsFC Differential output Receive eye diagram Eye diagram data values Link rate GHz Cheetah 15K.6 FC Product Manual, Rev. D Technical Support Seagate Technology support servicesInternet Presales SupportData Recovery Services Call CenterToll-freeDirect dialFAX Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexFC-AL Flogi Plogi Page See also cooling
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ST3450856FC specifications

The Seagate ST3146356FC, ST3300656FC, and ST3450856FC are hard disk drives designed for enterprise storage solutions, showcasing Seagate’s commitment to performance, reliability, and advanced technology in the data storage sector. These drives cater primarily to the needs of data centers and businesses requiring robust data management capabilities.

The ST3146356FC is notable for its 146GB capacity, 3.5-inch form factor, and 10,000 RPM spindle speed. It employs Serial Attached SCSI (SAS) interface technology, which ensures high data transfer rates and reliable connectivity. This model is designed to handle a multitude of demanding applications, such as online transaction processing and enterprise resource planning, requiring fast access to data and minimized latency.

The ST3300656FC, with a capacity of 300GB, continues the trend of high performance set by its predecessor. This drive also features the 10,000 RPM spindle speed and SAS interface, providing enhanced data throughput and optimized performance for intensive workloads. The drive is built with advanced error recovery features that enhance data integrity and reliability, making it suitable for critical applications where data loss is unacceptable.

The ST3450856FC offers even greater capacity, with a robust 450GB storage option. Like the other models, it operates at 10,000 RPM and utilizes the SAS interface. This drive is designed for scalability, ensuring that it can meet the evolving storage demands of enterprises. It is also equipped with sophisticated technologies such as Seagate's Enhanced S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology), providing continual monitoring of the drive’s health and performance metrics.

All three models share key characteristics, including advanced thermal and power management technologies that help maintain optimal operating temperatures and reduce energy consumption. This is crucial in data center environments where maximizing efficiency is vital for operational cost management. Additionally, Seagate's commitment to low acoustic noise levels ensures quieter operation, which is beneficial in environments where sound levels must be controlled.

In summary, the Seagate ST3146356FC, ST3300656FC, and ST3450856FC drives are engineered for enterprise environments demanding high reliability, speed, and capacity. Their advanced technologies, including SAS interface and enhanced error management systems, make these drives ideal for critical applications in data-intensive sectors. With reinforced durability, effectiveness in managing large volumes of data, and a focus on energy efficiency, these drives symbolize the pinnacle of Seagate's storage innovations for enterprise solutions.
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