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Seagate ST12550N/ND/W/WD - page 1
B A R R A CU D A 1 and 2 Disc Drive ST1 1950N/ND/W/WD ST12550N/ND/W/WD Installation Guide ...
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Seagate ST12550N/ND/W/WD - page 2
Contents Preface .................................................................. 1 Electrostatic discharge protection ........................... 1 Important safety information and precautions ......... 2 Wichtige Sicherheitshinweise ............................... 5 Technical support services ..................................... 10 General des ...
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Seagate ST12550N/ND/W/WD - page 3
ST11950 and ST12550 Installation Guide, Rev. D 1 Preface Thi s manua l co nt ain s info rm a tio n for u sers o f th e Se a g ate ® S T 1 1 95 0N/N D , S T 1 1 9 50 W / W D , S T 1 2 55 0N/N D , and ST1 2550W/ W D Barracu da™ S CSI dis c dri ves. I t provide s suppo rt serv ice s, perf ormance spe cifica tions, and init ial s etu p in f orm at i ...
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Seagate ST12550N/ND/W/WD - page 4
2 ST11950 and ST12550 Installation Guide, Rev. D • Ground yourself to the drive whenever the drive elec- tronics are or will be exposed. Connect yourself to ground with a wrist strap (Seagate part number 12263496). Connection may be made to any grounded metal assembly. As a general rule, remember that you and the drive electronics must all be gro ...
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Seagate ST12550N/ND/W/WD - page 5
ST11950 and ST12550 Installation Guide, Rev. D 3 read and followed to minimize or eliminate the risk of personal injury. The warnings point out conditions or practices that may endanger you or others. The cautions point out conditions or practices that may damage the unit, possibly making it unsafe for use. These warnings and cautions are not exhau ...
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Seagate ST12550N/ND/W/WD - page 6
4 ST11950 and ST12550 Installation Guide, Rev. D • Ensure that the internal temperature of the rack or cabinet does not exceed the limits defined for the drive when the drive is mounted in an equipment rack or cabinet. When units are stacked vertically, pay atten- tion to the top where temperatures are usually highest. • Follow the precautions ...
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Seagate ST12550N/ND/W/WD - page 7
ST11950 and ST12550 Installation Guide, Rev. D 5 dards. Typical applications of these disc drives include customer packaging and subsystem design. Safety agencies conditionally certify component parts, such as the Barracuda disc drive, based on their final accept- ability in the end-use product. The subsystem designers are responsible for meeting t ...
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Seagate ST12550N/ND/W/WD - page 8
6 ST11950 and ST12550 Installation Guide, Rev. D dürfen nur von qualifiziertem Fachpersonal vorgenommen werden. Wir empfehlen die Verfahren in diesem Handbuch als effektive Methoden zur Wartung und Reparatur der Einheit. Einige Verfahren erfordern Spezialwerkzeuge; diese müssen zur sachgemäßen Ausführung der Wartungsarbeiten und aus Sicherheit ...
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Seagate ST12550N/ND/W/WD - page 9
ST11950 and ST12550 Installation Guide, Rev. D 7 zuerst sicher, daß das gewählte Verfahren weder Ihre persönliche Sicherheit noch die Leistung der Einheit gefährdet. Beachten Sie in jedem Fall die folgenden Warn-und Vorsichtshinweise: • Führen Sie alle Wartungsarbeiten entsprechend den Anweisungen in diesem Handbuch aus. • Beachten Sie all ...
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Seagate ST12550N/ND/W/WD - page 10
8 ST11950 and ST12550 Installation Guide, Rev. D • Befolgen Sie die oben unter “Electrostatic Discharge Protection” angegebenen Sicherheitsmaßnahmen. • Nehmen Sie keine Platinen aus dem Laufwerkgehäuse. Wenn eine Platine defekt ist, muß das gesamte Laufwerk zur Reparatur eingeschickt werden. Die Herausnahme von Platinen durch anderePerso ...
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Seagate ST12550N/ND/W/WD - page 11
ST11950 and ST12550 Installation Guide, Rev. D 9 geltenden Standards zu gewährleisten. Zu den typischen Anwendungen dieser Festplattenwerke zählen Systemeinbau durch den Kunden und die Konstruktion von Untersystemen. Sicherheitsbehörden gewähren eine bedingte Zulassung für Komponenten wie das Barra- cuda-Festplattenlaufwerk vorbehaltlich der e ...
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Seagate ST12550N/ND/W/WD - page 12
10 ST11950 and ST12550 Installation Guide, Rev. D Technical support services Seagate Technology provides technical support litera- ture and diagnostic utilities to authorized distributors. Please contact your dealer for technical support and installation troubleshooting. Product technical support is available for all Seagate products by calling the ...
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Seagate ST12550N/ND/W/WD - page 13
ST11950 and ST12550 Installation Guide, Rev. D 11 access this service, which is available from 8:00 A . M . to 5:00 P . M . PST, Monday through Friday. SeaBOARD The Seagate Technical Support Bulletin Board System (BBS) is accessible by modem 24 hours a day, 7 days a week. The communications software must be set for eight data bits, no parity, and o ...
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Seagate ST12550N/ND/W/WD - page 14
12 ST11950 and ST12550 Installation Guide, Rev. D General description Barrac ud a 1 and 2 SCSI di sc dri ves are h igh- speed , ra n do m- a c c es s dig i t al - d at a s tor ag e d ev ic es . Th e ST11950N/ND and ST12550N/ND drives are illustrated in Figure 1, and the ST11950W/WD and ST12550W/WD drives are illustrated in Figure 2. Specifications ...
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Seagate ST12550N/ND/W/WD - page 15
ST11950 and ST12550 Installation Guide, Rev. D 13 I/O Terminator Packs (single-ended I/O only) SCSI I/O Connector DC Power Connector J4 J01 Figure 1. Barracuda 1 and 2 disc drive (N/ND type) SCSI I/O Connector DC Power Connector J4 J01 Pin 1 J5 Figure 2. Barracuda 1 and 2 disc drive (W/WD type) ...
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Seagate ST12550N/ND/W/WD - page 16
14 ST11950 and ST12550 Installation Guide, Rev. D Characteristics ST11950N/ND ST11950W/WD Interface Fast SCSI-2 1 Fast & Wide SCSI-2 1 Multi-seg. cache 1,024 Kbytes 1,024 Kbytes (W) 512 Kbytes (WD) Capacity Unformatted 2,030 Mbytes 2,030 Mbytes Formatted 2 1,690 Mbytes 1,690 Mbytes Recording Cylinders (user) 2,706 2,706 Heads 15 15 Avg sectors/ ...
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Seagate ST12550N/ND/W/WD - page 17
ST11950 and ST12550 Installation Guide, Rev. D 15 Characteristics ST12550N/ND ST12550W/WD Interface Fast SCSI-2 1 Fast & Wide SCSI-2 1 Multi-seg. cache 1,024 Kbytes 1,024 Kbytes (W) 512 Kbytes (WD) Capacity Unformatted 2,572 Mbytes 2,572 Mbytes Formatted 2 2,139 Mbytes 2,139 Mbytes Recording Cylinders (user) 2,707 2,707 Heads 19 19 Avg sectors/ ...
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Seagate ST12550N/ND/W/WD - page 18
16 ST11950 and ST12550 Installation Guide, Rev. D DC power requirements for ST11950N/ND and ST12550N/ND drives Single-ended Differential + + + + + 5V + + + + + 12V + + + + + 5V + + + + + 12V Voltage regulation 5 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 Amps Maximum operating current 1 1.1 0.95 1.5 0.95 Average idl ...
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Seagate ST12550N/ND/W/WD - page 19
ST11950 and ST12550 Installation Guide, Rev. D 17 DC power requirements for ST11950W/WD and ST12550W/WD drives Single-ended Differential + + + + + 5V + + + + + 12V + + + + + 5V + + + + + 12V Voltage regulation 5 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 ± ± ± ± ± 5% ± ± ± ± ± 5% 2 Amps Maximum operating current 1 1.04 0.95 1.3 0.95 Average id ...
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Seagate ST12550N/ND/W/WD - page 20
18 ST11950 and ST12550 Installation Guide, Rev. D continued from previous page 2 A − 10% tolerance is permissible during initial start of the spindle but m ust return t o ± 5% before reaching 7,200 RP M. Th e ± 5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is abl e t o ac ce pt ...
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Seagate ST12550N/ND/W/WD - page 21
ST11950 and ST12550 Installation Guide, Rev. D 19 continued from previous page 11 No terminator power. See Section 11.7.3.4 in the Prod- uct Manual. 12 All power-saving features are enabled. 13 Seekin g is define d as a thir d- st roke see k a t O D. The com man d i s issue d eve r y 20 msec . 14 Read track is defined as repeat reads of track 15 wi ...
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Seagate ST12550N/ND/W/WD - page 22
20 ST11950 and ST12550 Installation Guide, Rev. D Setting the SCSI ID jumpers Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the highest-numbered ID available (ID7 in non-wide sys- tems); therefore the lower-numbered SCSI IDs are nor- mally used for the other SCSI devices such as this Barr ...
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Seagate ST12550N/ND/W/WD - page 23
ST11950 and ST12550 Installation Guide, Rev. D 21 Also check your system or controller user’s manual to ensure that you have not violated its SCSI ID numbering recommendations. SCSI ID = 0 SCSI ID = 7 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 J4 ID2 ID1 ID0 Select SCSI ID by placing jumpers as shown below. SCSI ...
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Seagate ST12550N/ND/W/WD - page 24
22 ST11950 and ST12550 Installation Guide, Rev. D DC Power Connector SCSI I/O Connector SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15 SCSI ID = 0 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 J5 4P 3P 2P 1P Pin 1 Pin 1 ID3 ID2 ID1 ID0 J5 Figure 4. Se ...
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Seagate ST12550N/ND/W/WD - page 25
ST11950 and ST12550 Installation Guide, Rev. D 23 Terminating the drive If you are installing the drive in a system that has other SCSI devices installed, terminate only the end devices on the SCSI chain. A SCSI “device” is any disc drive, scanner, tape backup unit, or other piece of hardware connected to your system using the SCSI bus. The top ...
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Seagate ST12550N/ND/W/WD - page 26
24 ST11950 and ST12550 Installation Guide, Rev. D Refer to the appropriate section below for instructions in terminating a drive. Caution. Installing or removing terminator packs im- properly can result in damage to the termina- tors or surrounding components. ST11950N and ST12550N drives To terminate ST11950N and ST12550N drives, install terminato ...
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Seagate ST12550N/ND/W/WD - page 27
ST11950 and ST12550 Installation Guide, Rev. D 25 Note. Al l s i n g l e- e nd e d t e rmi n at or s m us t b e ANS I SCS I - 2 a lt er n a t i v e 2 ac ti v e te r min a to r s . To install terminators, carefully insert the terminator’s pins firmly into the socket’s holes. Note that pin 1 on the pack is identified by a dot, a number one, or a ...
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Seagate ST12550N/ND/W/WD - page 28
26 ST11950 and ST12550 Installation Guide, Rev. D Enable drive terminators. J4 EDT RES PAR Enable Drive Terminators (EDT) Disable drive terminators. J01 Pin 1 J4 MTR DMS WP RES Figure 7. Enabling termination on ST11950W and ST12550W drives ST11950ND/WD and ST12550ND/WD drives ST11950ND/WD and ST12550ND/WD drives have no provisions for internal term ...
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Seagate ST12550N/ND/W/WD - page 29
ST11950 and ST12550 Installation Guide, Rev. D 27 Terminator power Single-ended (N and W) drives have four valid configu- rations for terminator power ( se e F ig u re 8). Differential (ND and WD dr ives) must be co nf igu red wi t h a j um per on J 01 pi ns 1 a nd 3 only. * Terminator power from the drive. The drive provides its own terminator pow ...
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Seagate ST12550N/ND/W/WD - page 30
28 ST11950 and ST12550 Installation Guide, Rev. D Changing other applicable jumper options Barracuda 1 and 2 drives are designed to be used in a variety of systems. Unique installations may require you to change one or more of the other jumpers to meet specific system requirements; however, in most cases, you will not need to change any of these ju ...
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Seagate ST12550N/ND/W/WD - page 31
ST11950 and ST12550 Installation Guide, Rev. D 29 Enable parity check of SCSI bus data (default). J4 PAR MTR DMS Parity Check option (PAR) Disable parity check. Enable motor start. This makes the drive wait for the Start Unit command from the host before starting the spindle motor. Motor Start option (MTR) Disable motor start (default) ...
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Seagate ST12550N/ND/W/WD - page 32
30 ST11950 and ST12550 Installation Guide, Rev. D Figures 10a and 10b provide the information necessary to configure all W and WD drive jumpers not discussed elsewhere in this manual. DC Power Connector SCSI I/O Connector Pin 9 (top pin in this illustration) is negative (cathode), Pin 10 (bottom pin) is positive (anode). Remote LED Connector* *Note ...
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Seagate ST12550N/ND/W/WD - page 33
ST11950 and ST12550 Installation Guide, Rev. D 31 Figure 10b. Additional jumper options for ST11950W/WD and ST12550W/WD drives J4 RES RES PAR Reserved for factory use. Reserved (RES) Enable motor start. This makes the drive wait for the Start Unit command from the host before starting the spindle motor. Motor Start option (MTR) Disable moto ...
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Seagate ST12550N/ND/W/WD - page 34
Spindle sync reference index signal (REFSIG+). J4 SSC Spindle Sync Cable Connector (SSC). These pins are used to connect a spindle sync cable. Ground (GND). SCSI Connector DC Power Connector J01 J4 Pin 1 Pin 2 Figure 11. Spindle sync jumpers and connectors for ST11950N/ND and ST12550N/ND drives 32 ST11950 and ST12550 Installation Guide, Rev. D Sync ...
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Seagate ST12550N/ND/W/WD - page 35
ST11950 and ST12550 Installation Guide, Rev. D 33 For W- and WD-type drives, use pins 11 and 12 on the J5 connector to attach the spindle sync cable. Pin 11 provides the reference index signal (REFSIG + ) and pin 12 provides ground (GND). See Figure 12. DC Power Connector SCSI I/O Connector Spindle sync reference index signal (REFSIG+). Spindle Syn ...
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Seagate ST12550N/ND/W/WD - page 36
34 ST11950 and ST12550 Installation Guide, Rev. D Figure 13 illustrates a typical synchronized spindle configuration. After connecting each drive with spindle sync cables, you must designate a master spindle sync reference source. This master source is normally a disc drive located on the same SCSI bus as the other drives you want to synchronize wi ...
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Seagate ST12550N/ND/W/WD - page 37
ST11950 and ST12550 Installation Guide, Rev. D 35 Providing adequate cooling The e ncl osu re des ig n must ensure a de quate c oo lin g for th e d r ive. The m ax im um a mb ien t tem per ature i s 50 o C. The d ri ve ’ s pr oduc t manua l ( 833 27780) d escri be s h ow to evalu ate t he ai r - fl ow des ig n. The evalu a tio n co nsi sts o f en ...
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Seagate ST12550N/ND/W/WD - page 38
36 ST11950 and ST12550 Installation Guide, Rev. D Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichende Kühlung des Laufwerkes gewährleisten. Die Umgebungstemperatur darf maximal 50 o C betragen. Die Produkthandbuch Barracuda 1 und 2 (Dokument 83327780) enthalten Anweisungen zur Beurteilung der Luftstromkonstruktion. Die Beurteilun ...
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Seagate ST12550N/ND/W/WD - page 39
ST11950 and ST12550 Installation Guide, Rev. D 37 Above unit Über der Einheit Under unit Unter der Einheit Note. Air flows in the direction shown (back to front) or in reverse direction (front to back) Note. Air flows in the direction shown or in reverse direction (side to side) Above unit Über der Einheit Under unit Unter der Einheit Hinweis. Lu ...
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Seagate ST12550N/ND/W/WD - page 40
38 ST11950 and ST12550 Installation Guide, Rev. D Mounting the drive and connecting cables Do not touch the connector pins or any components on the control board without observing static-discharge precautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizon- tally, vertically, and any combination ther ...
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Seagate ST12550N/ND/W/WD - page 41
ST11950 and ST12550 Installation Guide, Rev. D 39 Installation des Laufwerkes und Anschluß der Kabel Beachten Sie beim Handhaben und Anfassen der Anschlußstifte und Komponenten die Vorsichtsmaßnahmen zur Verhinderung statischer Aufladung. Fassen Sie das Laufwerk nur am Rahmen an. Das Laufwerk kann in beliebiger Orientierung (horizon- tal, vertik ...
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Seagate ST12550N/ND/W/WD - page 42
40 ST11950 and ST12550 Installation Guide, Rev. D T U R F (1) E D K L A M (3) N C P B S H G J Notes: (1) (2) (3) (4) Inches Millimeters 5.740 4.000 1.615 .615 4.000 .250 1.750 3.750 2.370 5.420 5.565 5.930 .240 .410 1.725 4.100 .190 0.015 145.80 101.60 41.02 15.68 101.60 ? ...
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Seagate ST12550N/ND/W/WD - page 43
ST11950 and ST12550 Installation Guide, Rev. D 41 2. Verify that all connections between the drive and the host system are correctly installed. 2. Prüfen Sie, ob alle Verbindungen zwischen dem Laufwerk und dem Host-System korrekt hergestellt sind. 3. Verify that you have correctly installed SCSI ID jump- ers (see Figures 3, 4, 6, and 7). 3. Stelle ...
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Seagate ST12550N/ND/W/WD - page 44
42 ST11950 and ST12550 Installation Guide, Rev. D darf nicht gedehnt oder gedrückt werden und es darf den Luftstrom zur Kühlung des Systems nicht behindern. Das Laufwerk wird über einen 4-poligen, neben dem SCSI-Anschluß befestigten Steckverbinder mit Gleichstrom versorgt. Der Ausgang eines Netzteils muß SELV (safety extra low voltage) nach IE ...
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Seagate ST12550N/ND/W/WD - page 45
ST11950 and ST12550 Installation Guide, Rev. D 43 Note. Signal ground on the power control board (PCB) and the head and disc assembly (HDA) are con- nected together in this drive and you cannot separate them. The equipment in which you have mounted the drive is connected directly to the HDA and PCB without electrically isolating shock mounts. Maxim ...
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Seagate ST12550N/ND/W/WD - page 46
44 ST11950 and ST12550 Installation Guide, Rev. D Systemgehäuse nicht an die HDA/PCB-Erdung anschließen wollen, müssen Sie das Laufwerk auf nichtleitende Weise (galvanisch isoliert) im Host-System einbauen. Die daraus u.U. resultierende verstärkte elektromagnetische Strahlung fällt in den Zuständigkeitsbereich des Systemdesigners. 5. Replace ...
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Seagate ST12550N/ND/W/WD - page 47
ST11950 and ST12550 Installation Guide, Rev. D 45 Formatting the drive Warning. Formatting a drive erases all user data. Be sure that you understand this principle before formatting any hard disc drive. It is not necessary to format a drive which has previously been used to store data, unless your intention is to erase all user data. 1. Turn on DC ...
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Seagate ST12550N/ND/W/WD - page 48
Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83327770, Rev. D, Printed in USA ...
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