Seagate ST43402ND, ST43401N/ND Characteristics Conditions Specifications, Write Read Msec

Page 14

4

ST43401N/ND, ST43402ND User’s Manual, Rev. B

continued from previous page

 

 

 

Characteristics

 

Conditions

Specifications

SCSI transfer rate, burst

 

20.0 Mbytes/sec max

Seek time (time required

Typical full

23.5 msec

to move heads to a different

Typical average

11.5 msec

track address—excluding

Typical one-track

1.7 msec

 

SCSI I/O overhead)

 

 

 

 

Typical access times

 

 

Write

Read

 

 

 

msec

msec

 

 

Single track seek

1.7

0.9

 

 

Average seek

11.5

10.5

 

 

Maximum seek

23.5

22.5

Latency (time required

 

Average

5.55 msec

to reach a particular

 

(disc rotation

 

 

track address after head

at 5,400 RPM)

 

 

positioning is complete)

 

 

 

 

 

Maximum

11.17 msec

 

 

(disc rotation

 

 

 

 

at 5,373 RPM)

 

 

Start time**

 

 

30 sec max

Stop time

 

 

30 sec max

**Following the power sequence delay, once DC power is applied and start conditions are present.

Image 14
Contents Elite Disc Drive ST43401N/ND ST43402ND Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Page SeaFONE 408 Technical support servicesSeaFAX USA 408 438-2620 England SeaTDD 408Telephone Location NumberGeneral description ST43402ND disc drive ST43401N/ND, ST43402ND User’s Manual, Rev. B Characteristics Conditions Specifications Write Read MsecPage Drive functional block diagram Umgebungsbedingungen Site requirementsEnvironmental requirements Environmental requirements Conditions Specifications ST43401N/ND, ST43402ND User’s Manual, Rev. B Air-flow requirements Suggested air flow/Empfohlener Luftstromverlauf Space requirements Räumliche AnforderungenMounting orientations Montageorientierungen Dimensions of the drive Laufwerkabmessungen Power requirements ST43401N/ND, ST43402ND User’s Manual, Rev. B Grounding requirements Interface requirementsST43401N/ND, ST43402ND User’s Manual, Rev. B Ground Ground Diffsens Termpwr Reserved ATN BSY ACK RST MSG SEL REQ Even pin Odd pin Signal name Numbers Inspection Unpacking, inspection, and repackingUnpacking RepackingInstallation procedures Setting the control board jumpersJ4B J4A ST43402ND I/O board J09 jumpers ST43402ND I/O board J10 jumpers ST43402ND I/O board J01 and J03 jumpers Mounting the power supply Installing a power supplySetting the voltage range Attaching an optional bezel Attaching a bezel ST43401N/ND shownMounting the drive Mounting the drive ST43401N/ND shown Connecting the system I/O cabling ST43401N/ND drivesST43402ND drives ST43402ND I/O cable attachmentST43401N terminator attachment-single-ended I/O ST43401ND terminator attachment-differential I/O Grounding the system Synchronizing the spindleJ4A J4A ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification Page LED indicators OperationLEDs on ST43401N/ND drives LED indicator Function LEDs on ST43402ND drives When it is off, the drive does not have a Scsi LED or indicator Function Operating instructionsParts data Options and accessories Part Number Description Maintenance Observing maintenance precautionsPacking a drive for shipment Arranging for depot repairRemoving and replacing a drive