Seagate ST373207LW/LC, ST3146707LW/LC, ST3300007LW/LC manual Disc drive Scsi timing

Page 95

Table 21: Disc drive SCSI timing (Continued)

These values are not current Cheetah 10K.7 SCSI values, but are listed for information only.

 

Waveform

Waveform

 

 

Description

symbol [1]

table [1]

Typical timing

 

 

 

 

 

Next CDB Byte Access (Byte 8 of 10)

T23.10.8

4.5-4

0.12

∝s ±1 ∝s

 

 

 

 

 

Next CDB Byte Access (Byte 9 of 10)

T23.10.9

4.5-4

0.12

∝s ±1 ∝s

 

 

 

 

 

Next CDB Byte Access (Byte 10 of 10)

T23.10.10

4.5-4

0.12

∝s ±1 ∝s

 

 

 

 

 

Data In Byte Transfer (parameter)

T24

4.5-12

0.04

∝s

 

 

 

 

 

Data Out Byte Transfer (parameter)

T25

4.5-13

0.04

∝s

 

 

 

 

 

Next Data In Byte Access (parameter)

T26

4.5-12

0.12

∝s

 

 

 

 

 

Next Data Out Byte Access (parameter)

T27

4.5-13

0.12

∝s

 

 

 

 

 

Data In Byte Transfer (media) [2]

T28

4.5-12

0.04

∝s

 

 

 

 

 

Data Out Byte Transfer (media) [2]

T29

4.5-13

0.04

∝s

 

 

 

 

 

Next Data In Byte access (media [2]

T30

4.5-12

0.12

∝s

 

 

 

 

 

Next Data Out Byte access (media [2]

T31

4.5-13

0.12

∝s

 

 

 

 

 

MSG IN Byte Transfer

T32

4.5-5,7,8,14,15

0.04

∝s

 

 

 

 

 

MSG OUT Byte Transfer

T33

4.5-2

0.04

∝s

 

 

 

 

 

STATUS Byte Transfer

T34

4.5-5,8,15

0.04

∝s

 

 

 

 

 

Synchronous Data Transfer Characteristics:

 

 

 

 

 

 

 

 

Request Signal Transfer Period [3]

–

–

various (800 ns max)

 

 

 

 

 

Notes.

[1]See the Timing examples section of the SCSI Interface Product Manual.

[2]Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3 of this manual.

[3]Synchronous Transfer Period is determined by negotiations between an Initiator and a drive. The drive is capable of setting periods as given in Section 9.5. See also the Synchronous data transfer section and the Extended messages section of the SCSI Interface Product Manual for a description of synchronous data transfer operation.

Cheetah 10K.7 SCSI Product Manual, Rev. D

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Contents Cheetah 10K.7 Scsi Page Cheetah 10K.7 Scsi Page Revision status summary sheet Page Contents Interface requirements Defect and error managementInstallation Seagate Technology support servicesList of Figures Viii Cheetah 10K.7 Scsi Product Manual, Rev. D Cheetah 10K.7 Scsi family drive ST3300007LC shown ScopeCheetah 10K.7 Scsi Product Manual, Rev. D Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Electromagnetic complianceReference documents Cheetah 10K.7 Scsi Product Manual, Rev. D General description Media characteristics Standard featuresFormatted capacities PerformanceReliability Programmable drive capacity Factory installed accessoriesOptions factory installed Accessories user installedScsi performance characteristics visible to user Performance characteristicsInternal drive characteristics transparent to user Ultra320 Scsi Access timeFormat command execution time minutes Generalized performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Caching write data Prefetch operation Cheetah 10K.7 Scsi Product Manual, Rev. D Unrecoverable Errors Reliability specificationsError rates Recoverable ErrorsAnnualized Failure Rate AFR Reliability and serviceSeek errors Preventive maintenanceControlling S.M.A.R.T 4 S.M.A.R.TPredictive failures Performance impactReporting control Determining rateDrive Self Test DST Parameter Code DescriptionInvoking DST State of the drive prior to testingDST Failure Definition ImplementationLog page entries Product warrantyShort test Function Code 001b Extended test Function Code 010bProduct repair and return information ShippingDC power requirements Physical/electrical specificationsAC power requirements ST3146707 SE mode LVD mode 3 12 V Current profile Power sequencingConducted noise immunity Typical ST3300007 drive +12 V current profile Typical ST3146707 drive +12 V current profile Typical ST373207 drive +12 V current profile ST3300007 Power dissipationST3146707 ST373207 Effective altitude sea level TemperatureEnvironmental limits Relative humidityShock Shock and vibrationRecommended mounting Corrosive environment Air cleanlinessVibration Acoustics Mechanical specificationsLW mounting configuration dimensions LC mounting configuration dimensions Drive internal defects Defect and error managementDrive error recovery procedures Page Scsi systems errors Media Pre-Scan Background Media ScanFormatting InstallationConfigure drive options Drive ID/option select headerJ6 jumper header J5 jumper header on LW models only J2 option select header on LW models only RES Function descriptionCooling Drive orientationGrounding Drive mountingCheetah 10K.7 Scsi Product Manual, Rev. D Scsi interface messages supported Interface requirementsGeneral description Scsi interface commands supported Page Page Page Inquiry Vital Product data Mode Sense data Mode Sense 10 Byte Header Data 00 ae 00 10 00 00 00 08 11 17 73 30 00 00 02 00 ae 00 10 00 00 00 08 08 8b b9 98 00 00 02 Condition/feature supported by Scsi bus conditions and miscellaneous features supported2 REQ/ACK offset Synchronous data transferPhysical interface Synchronous data transfer periods supportedDC cable and connector PCB Scsi interface physical description LC Models Mating connectorsScsi interface cable requirements Cable requirementsMating connectors for LC model drives Mating connectors for LW model drivesRight-angle to Pcba connectors Scsi daisy chain interface cabling for LW drives Nonshielded 68-pin Scsi device connector used on LW drives Nonshielded 80-pin Scsi SCA-2 connector, used on LC drives GND +DBP1 Charge Active LED OUT 4 REQ +REQ Active LED OUT 4 Multimode-SE and LVD alternatives LVD output characteristicsElectrical description Single-ended drivers/receivers LVD input characteristicsGeneral cable characteristics Cables for low voltage differential drivers/receivers LC drives Terminator requirements Terminator powerLW drives Disc drive Scsi timing Disc drive Scsi timing Drive activity LED Spindle status Command status LED statusTechnical Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Presales 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 Scsi Product Manual, Rev. D Numerics SymbolsPage Page PCB Page Cheetah 10K.7 Scsi Product Manual, Rev. D

ST3300007LW/LC, ST373207LW/LC, ST3146707LW/LC specifications

Seagate's ST3146707LW/LC, ST373207LW/LC, and ST3300007LW/LC are part of the company's renowned line of hard disk drives (HDDs), specifically designed for enterprise and high-performance computing environments. With their reliability and performance, these drives have become popular choices for data centers and critical applications requiring extensive storage capabilities.

One of the standout features of these models is their capacity to handle large volumes of data. The ST3146707LW/LC has a capacity of 146GB, while the ST373207LW/LC offers 73GB, and the ST3300007LW/LC comes with a substantial 300GB. These capacities make them well-suited for applications that require not only high storage space but also rapid access to data.

In terms of performance, these drives utilize a 10,000 RPM spindle speed, which significantly enhances data access times and overall performance. The combination of fast rotational speeds with Seagate's advanced caching algorithms allows for swift data retrieval, making these drives ideal for environments where speed is crucial.

These HDDs also employ the SCSI (Small Computer System Interface) interface, which promises high data transfer rates and reliability in enterprise-level applications. The Ultra320 SCSI interface can support transfer rates up to 320 MB/s, ensuring that the drives can efficiently communicate with other system components.

Another key technology featured in these models is Seagate's Adaptive Error Correction technology, which enhances data integrity and reliability. This feature helps in the detection and correction of errors that can occur during data transfer, reducing the risk of data loss.

Performance consistency is critical in enterprise environments, and these drives are built to endure the demands of 24/7 operation. They are designed with robust mechanisms to withstand temperature fluctuations, shock, and vibrations commonly found in data center settings.

In summary, the Seagate ST3146707LW/LC, ST373207LW/LC, and ST3300007LW/LC hard drives exemplify advanced features and technologies tailored for enterprise storage solutions. With significant capacities, impressive spindle speeds, SCSI connectivity, and reliability-focused technologies, these drives remain a valuable asset for businesses relying on stable and high-performance data storage.
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