Seagate ST373405LW/LWV/LC/LCV manual Drive activity LED, Spindle status Command status LED status

Page 79

Cheetah 73LP Product Manual, Rev. E

69

Table 19: Disc drive SCSI timing (Continued)

These values are not current Cheetah 73LP values, but are listed for information only.

 

Waveform

Waveform

 

 

Description

symbol [1]

table [1]

Typical timing

 

 

 

 

 

 

 

 

 

 

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 SCSI Interface Product Manual, part number 75789509, Timing examples section.

[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.

9.11Drive activity LED

The following table provides drive activity LED status.

Table 20: Drive activity LED status

Spindle status

Command status

LED status

 

 

 

 

 

 

Spinning up with DC power applied

N/A

On until spinup is complete

 

 

 

Spun down

Start Unit

On while processing the command

 

 

 

Powered down by removal of DC power

N/A

Off due to absence of power

 

 

 

Spun up

Stop Unit

On while processing the command

 

 

 

Spun down

No command activity

Off

 

 

 

Spun down

Write/Read Buffer

On while processing the command

 

 

 

Spun down

SCSI Bus Reset

On while processing the reset

 

 

 

Spun down

Test Unit Ready

On while processing the command

 

 

 

Spun up

No command activity

Off

 

 

 

Spun up

Write/Read

On while processing the command

 

 

 

Spun up

SCSI Bus Reset

On while processing the reset

 

 

 

Spun up

Test Unit Ready

On while processing the command

 

 

 

Spun up

Format with Immediate option on

On while the command is initially processed

 

 

 

Spun up

Format without Immediate

LED toggles on/off on each cylinder boundary

 

 

 

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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 Interface requirements Defect and error managementInstallation Seagate Technology support servicesCheetah 73LP Product Manual, Rev. E Vii List of FiguresPage Cheetah 73LP family drive ST373405LW shown ScopeCheetah 73LP Product Manual, Rev. E Applicable standards and reference documentation Korean MIC Australian C-TickTaiwanese Bsmi General description Cheetah 73LP family drive Reliability Cheetah 73LP Product Manual, Rev. E Standard featuresMedia characteristics PerformanceUnformatted and formatted capacities Factory installed accessoriesOptions factory installed Accessories user installedPerformance characteristics Start/stop time Ultra2 Scsi Ultra3 ScsiPrefetch/multi-segmented cache control Caching write data Cheetah 73LP Product Manual, Rev. E Cache operationPrefetch operation Reliability specifications Service philosophy Reliability and servicePreventive maintenance Service lifeControlling S.M.A.R.T 7 S.M.A.R.TDetermining rate Performance impactMilliseconds Reporting controlInvoking DST State of the drive prior to testingDST Failure Definition ImplementationLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bShipping Cheetah 73LP Product Manual, Rev. E Product warrantyProduct repair and return information Cheetah 73LP Product Manual, Rev. E AC power requirements Physical/electrical specificationsDC power requirements Conducted noise immunity Power sequencing3 12 V Current profile Typical ST336605 drive +12 V current profile Typical ST336605 drive +5 V current profile Amperes 000 900 800 700 600 Effective altitude sea level TemperatureCheetah 73LP Product Manual, Rev. E Environmental limits Relative humidityShock Shock and vibrationRecommended mounting Vibration Air cleanlinessAcoustics LW and LWV mounting configuration dimensions LC and LCV mounting configuration dimensions Drive error recovery procedures Defect and error managementDrive internal defects Scsi systems errors Drive ID/option select header InstallationConfigure drive options FormattingDo 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 descriptionCooling Drive orientationGrounding Cheetah 73LP Product Manual, Rev. E Drive mountingCheetah 73LP Product Manual, Rev. E Scsi interface messages supported Interface requirementsScsi 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 2 REQ/ACK offset DC cable and connectorPhysical interface Pin Power Scsi interface cable requirements Scsi interface physical descriptionST373405LC/LCV and ST336605LC/LCV Mating connectorsMating connectors for LW and LWV model drives Mating connectors for LC and LCV model drivesCheetah 73LP Product Manual, Rev. E Scsi ID Right-angle to Pcba connectors650±.005 155 100 346 Front View GND +DBP1 62Cheetah 73LP Product Manual, Rev. E REQ +REQ Electrical description LVD output characteristicsMultimode-SE and LVD alternatives Single-ended drivers/receivers General cable characteristicsTerminator requirements Cables for low voltage differential drivers/receiversLC and LCV drives Disc drive Scsi timing Drive activity LED Spindle status Command status LED statusCheetah 73LP Product Manual, Rev. E Technical Support Seagate Technology support services Online ServicesAutomated Services Presales SupportUSA/Canada/Latin America Support Services Customer Service CSOEuropean Support Services Asia/Pacific Support Services Africa/Middle East Support ServicesCall Center Toll-free Direct dial 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
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