Media characteristics, Performance | Seagate ST373405LW/LWV/LC/LCV

Cheetah 73LP Product Manual, Rev. E

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3.1Standard features

The Cheetah 73LP family has the following standard features:

•Integrated Ultra/Ultra2/Ultra3 SCSI controller

•Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)

•16-bit I/O data bus

•Asynchronous and synchronous data transfer protocol

•Firmware downloadable via SCSI interface

•Selectable even byte sector sizes from 512 to 4,096 bytes/sector

•Programmable sector reallocation scheme

•Flawed sector reallocation at format time

•Programmable auto write and read reallocation

•Reallocation of defects on command (post format)

•Enhanced ECC correction capability up to 240 bits

•Sealed head and disc assembly

•No preventative maintenance or adjustment required

•Dedicated head landing zone

•Embedded servo design

•Self diagnostics performed when power is applied to the drive

•1:1 Interleave

•Zoned bit recording (ZBR)

•Vertical, horizontal, or top down mounting

•Dynamic spindle brake

•4,096 kbyte data buffer (16,384 kbytes on LCV and LWV models)

•Hot plug compatibility (Section 9.6.4.2 lists proper host connector needed) for LC/LCV model drives

•Drive Self Test (DST)

3.2Media characteristics

The media used on the drive has a diameter of approximately 3.3 inches (84 mm). The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

3.3Performance

•Supports industry standard Ultra3 SCSI interface

•Programmable multi-segmentable cache buffer (see Section 4.5)

•10,000 RPM spindle. Average latency = 2.99 ms

•Command queuing of up to 64 commands

•Background processing of queue

•Supports start and stop commands (spindle stops spinning)

3.4Reliability

•1,200,000 hour MTBF

•LSI circuitry

•Balanced low mass rotary voice coil actuator

•Incorporates industry-standard Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.)

•5-year warranty

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Seagate ST373405LW/LWV/LC/LCV Cheetah 73LP Product Manual, Rev. E Standard features, Media characteristics, Performance

Contents

ST373405LW/LWV/LC/LCV ST336605LW/LC/LCV Page ST373405LW/LWV/LC/LCV ST336605LW/LC/LCV Page Revision Date Writer/Engineer Sheets Affected Revision status summary sheetPage Contents Installation Defect and error managementSeagate Technology support services Interface requirements Cheetah 73LP Product Manual, Rev. E Vii List of FiguresPage Cheetah 73LP family drive ST373405LW shown Scope Cheetah 73LP Product Manual, Rev. E Applicable standards and reference documentation Taiwanese Bsmi Australian C-TickKorean MIC General description Cheetah 73LP family drive Media characteristics Cheetah 73LP Product Manual, Rev. E Standard featuresPerformance Reliability Options factory installed Factory installed accessoriesAccessories user installed Unformatted and formatted capacities Performance characteristics Prefetch/multi-segmented cache control Ultra2 Scsi Ultra3 ScsiStart/stop time Caching write data Cheetah 73LP Product Manual, Rev. E Cache operation Prefetch operation Reliability specifications Preventive maintenance Reliability and serviceService life Service philosophy Controlling S.M.A.R.T 7 S.M.A.R.T Milliseconds Performance impactReporting control Determining rate DST Failure Definition State of the drive prior to testingImplementation Invoking DST Short test Function Code 001b Short and extended testsExtended test Function Code 010b Log page entries Product repair and return information Cheetah 73LP Product Manual, Rev. E Product warrantyShipping Cheetah 73LP Product Manual, Rev. E DC power requirements Physical/electrical specificationsAC power requirements 3 12 V Current profile Power sequencingConducted noise immunity Typical ST336605 drive +12 V current profile Typical ST336605 drive +5 V current profile Amperes 000 900 800 700 600 Cheetah 73LP Product Manual, Rev. E Environmental limits TemperatureRelative humidity Effective altitude sea level Shock Shock and vibration Recommended mounting Acoustics Air cleanlinessVibration LW and LWV mounting configuration dimensions LC and LCV mounting configuration dimensions Drive internal defects Defect and error managementDrive error recovery procedures Scsi systems errors Configure drive options InstallationFormatting Drive ID/option select header Do not install jumpers retain cover J5 jumper header on LW/LWV models only J2 option select header Does not apply to LC/LCV model Cheetah 73LP Product Manual, Rev. E Function description Cooling Drive orientation Grounding Cheetah 73LP Product Manual, Rev. E Drive mounting Cheetah 73LP Product Manual, Rev. E Scsi interface messages supported Interface requirements Scsi interface commands supported Cheetah 73LP Product Manual, Rev. E Cheetah 73LP Product Manual, Rev. E Inquiry Vital Product data Mode Sense data DEF CHG Cheetah 73LP Product Manual, Rev. E Condition/feature supported by Physical interface DC cable and connector2 REQ/ACK offset Pin Power Scsi interface cable requirements Scsi interface physical description Mating connectors for LW and LWV model drives Mating connectorsMating connectors for LC and LCV model drives ST373405LC/LCV and ST336605LC/LCV Cheetah 73LP Product Manual, Rev. E Scsi ID Right-angle to Pcba connectors 650±.005 155 100 346 Front View GND +DBP1 62Cheetah 73LP Product Manual, Rev. E REQ +REQ Multimode-SE and LVD alternatives LVD output characteristicsElectrical description Single-ended drivers/receivers General cable characteristics Terminator requirements Cables for low voltage differential drivers/receivers LC and LCV drives Disc drive Scsi timing Drive activity LED Spindle status Command status LED status Cheetah 73LP Product Manual, Rev. E Automated Services Seagate Technology support services Online ServicesPresales Support Technical Support European Support Services Customer Service CSOUSA/Canada/Latin America Support Services Call Center Toll-free Direct dial Africa/Middle East Support ServicesAsia/Pacific Support Services Cheetah 73LP Product Manual, Rev. E Index Cheetah 73LP Product Manual, Rev. E Cheetah 73LP Product Manual, Rev. E Scam Scsi Scsi ID 80Cheetah 73LP Product Manual, Rev. E