Seagate ST3300656FC Performance characteristics, Internal drive characteristics, Access time

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4.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.6 FC drives.

4.1Internal drive characteristics

 

ST3450856FC

ST3300656FC

ST3146356FC

 

Drive capacity*

450

300

146

Gbytes (formatted, rounded off value)

Read/write data heads

8

6

3

 

Tracks per inch

150,000

150,000

150,000

TPI

Peak bits per inch

1,100k

1,100k

1,100k

BPI

Areal density

165

165

165

Gbits/inch2

Internal data rate

1.95

1.95

1.95

Gbits/sec (max)

Disc rotation speed

15k

15k

15k

rpm

Avg rotational latency

2.0

2.0

2.0

msec

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

4.2Seek performance characteristics

See Section 9.5, "FC-AL physical interface" on page 66 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details.

4.2.1Access time

Not including controller overhead1,2(msec)

 

 

Read

Write

Average

Typical

3.4

3.9

Single track

Typical

0.20

0.44

Full stroke

Typical

6.43

7.12

1.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

2.Access to data = access time + latency time.

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

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Contents ST3450856FC ST3300656FC ST3146356FC Cheetah 15K.6 FCPage Contents Installation Defect and error managementInterface requirements Seagate Technology support services Cheetah 15K.6 FC Product Manual, Rev. a List of Figures Page Scope Cheetah 15K.6 FC Product Manual, Rev. a 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. a General description Media description Standard featuresFormatted capacities Factory-installed optionsPerformance ReliabilityUser-installed accessories Access time Performance characteristicsInternal drive characteristics Seek performance characteristicsPrefetch/multi-segmented cache control Format command execution time minutesGeneral performance characteristics Start/stop timeCaching write data Cache operationPrefetch 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 Reporting controlDetermining rate Predictive failuresDST failure definition State of the drive prior to testingParameter Code Description Drive Self Test DSTExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bProduct repair and return information Product warrantyAbort ShippingCheetah 15K.6 FC Product Manual, Rev. a DC power requirements for ST3450856FC model Gbit Amps Physical/electrical specificationsAC power requirements DC power requirementsDC power requirements for ST3146356FC model Gbit Amps DC power requirements for ST3300656FC model Gbit AmpsCurrent profiles General DC power requirement notesPower sequencing Conducted noise immunityTypical ST3450856FC current profiles Typical ST3300656FC current profiles Typical ST3146356FC current profiles ST3450856FC Power dissipationST3300656FC Environmental limits TemperatureST3146356FC Shock Relative humidityEffective altitude sea level Shock and vibrationPackage size Packaged/product weight Drop height Recommended mounting Corrosive environment Air cleanlinessVibration AcousticsRoHS compliance statement Mounting configuration dimensions Mechanical specificationsCheetah 15K.6 FC Product Manual, Rev. a Drive internal defects/errors Defect and error managementDrive error recovery procedures Page Background Media Scan FC-AL system errorsDeferred Auto-Reallocation Media Pre-ScanIdle Read After Write Cheetah 15K.6 FC Product Manual, Rev. a Cooling InstallationDrive ID/option selection Drive orientationAir flow Drive mountingGrounding Cheetah 15K.6 FC Product Manual, Rev. a Interface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameFibre Channel task management responses Fibre Channel task management functionsFC Scsi FCP response codes Function name Response code 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 loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedSupported commands Command code Command name Scsi commands supportedVerify error recovery page 07h Cheetah 15K.6 FC Product Manual, Rev. a Temperature page 0Dh Inquiry data Mode Sense dataCheetah 15K.6 FC inquiry data Bytes Data hex Page Mode Data Header 000000 Cheetah 15K.6 FC Product Manual, Rev. a Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionFC-AL physical interface Physical characteristicsPhysical description Electrical description Connector requirementsPin descriptions Pin Signal name Signal type FC-SCA pin descriptions Pin Signal name Signal typeFC-AL transmitters and receivers Fault LED Out PowerActive LED Out Enable port bypass signalsMotor start controls 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIArbitrated loop physical address Alpa values SettingHex Dec TTL input characteristics Signal characteristicsDevice control codes FC Differential output LED driver signalsFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Cheetah 15K.6 FC Product Manual, Rev. a Technical Support Seagate Technology support servicesInternet Presales SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Numerics IndexFAN Flogi Plogi Page See also cooling
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ST3450856FC, ST3300656FC, ST3146356FC 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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