Seagate ST43401N/ND User Manual
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Seagate ST43401N/ND User Manual

Seagate ST43401N/ND User Manual

Elite disc drive
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Elite Disc Drive
ST43401N/ND
ST43402ND
User's Manual

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Summary of Contents for Seagate ST43401N/ND

  • Page 1 Elite Disc Drive ST43401N/ND ST43402ND User’s Manual...

  • Page 2: Table Of Contents

    Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission from Seagate Technology, Inc.

  • Page 3: Preface

    • Ground yourself to the drive whenever the drive electronics 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.

  • Page 4: Important Safety Information And Precautions

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Important safety information and precautions Caution. Use forced-air ventilation when bench-testing the drive to ensure proper cooling of drive components. Use proper safety and repair techniques for safe, reliable operation of this unit. Service should be done only by qualified persons. We recommend the procedures in this manual as effective ways of servicing the unit.
  • Page 5 UL1950, IEC950, EN60950, CSA C22.2 950, and VDE0805. Seagate takes all reasonable steps to ensure that its products are certifiable to currently accepted standards. Typical applications of these disc drives include customer packaging and subsystem design. Safety agencies condi- tionally certify component assemblies, such as the Elite disc drive, based on their final acceptability in the end-use product.

  • Page 6: Wichtige Sicherheitshinweise

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Wichtige Sicherheitshinweise Vorsicht. Beim Testen des Laufwerks auf dem Prüftisch ist Fremdbelüftung vorzusehen, um eine ausreichende Kühlung der Laufwerkkomponenten sicherzustellen. Verwenden Sie geeignete Sicherheits- und Reparaturverfahren, um den sicheren, zuverlässigen Betrieb dieser Einheit zu gewährleisten. Reparaturen dürfen nur von qualifiziertem Fachpersonal vorgenommen werden.
  • Page 7 Handbuch entspricht und für den Betrieb in Übereinstimmung mit UL 1950, IEC950, EN 60950, CSA C22.2 950 und VD0805 vorgesehen ist. Seagate ist ständig bemüht, die Zulassungsfähigkeit von Seagate-Produkten im Rahmen der gegenwärtig geltenden Standards zu gewährleisten. Zu den typischen Anwendungen dieser Festplattenwerke zählen Systemeinbau durch den Kunden und die Konstruktion von Untersystemen.
  • Page 8 ST43401N/ND, ST43402ND User’s Manual, Rev. B Dieses Gerät ist eine Baugruppe und unterliegt als solche nicht den Anforderungen der FCC oder ähnlicher nationaler Behörden für eigenständige. Technische Testergebnisse zu Frequenz- und Elektrizitätsemissionen sind für Designer von Untersystemen auf Anfrage von der Seagate- Sicherheitsabteilung erhältlich.

  • Page 9: Technical Support Services

    Technical support specialists are available between 8:00 PST, Monday through Friday. Recorded technical information for selected Seagate products is accessible 24 hours a day, 7 days a week. SeaTDD: (408) 438-5382 TDD is a telecommunication device for the deaf where two people can communicate using a keyboard connected to the phone line.
  • Page 10 ST43401N/ND, ST43402ND User’s Manual, Rev. B Location USA, Mexico, Latin America England Germany Singapore Australia Canada France Korea Telephone number (408) 438-8771 44-62-847-8011 49-89-140-9331 65-292-6973 61-2-756-2359 (416) 856-5581 33-1-40-67-1034 82-2-556-7294...

  • Page 11: Section 1. General Description

    They communicate with an initiator using the fast and wide (16-bit) Small Computer System Interface (SCSI-2). The ST43401N/ND disc drive is shown in Figure 1, and the ST43402ND (dual port) disc drive is shown in Figure 2. Specifications for these drives are listed in Table 1 following the figures.
  • Page 12 ST43401N/ND, ST43402ND User’s Manual, Rev. B Control Board Spindle Sync Connector Remote Operator Panel Connector I/O Board Power Port B I/O Connector Option Jumpers Port B Terminator Power Board Port A Terminator Power Figure 2. The ST43402ND disc drive Power...
  • Page 13 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 1. Drive specifications Characteristics Conditions Size Dimensions Weight (drive only) Interface Fast and wide (16-bit) SCSI-2 Recording Total capacity (unformatted) Bytes per track (unformatted) Inner track Outer track Formatted capacity* (256-byte sectors) (512-byte sectors)
  • Page 14 ST43401N/ND, ST43402ND User’s Manual, Rev. B continued from previous page Characteristics SCSI transfer rate, burst Seek time (time required to move heads to a different track address—excluding SCSI I/O overhead) Typical access times Latency (time required to reach a particular...
  • Page 15 The DC power cable is available as an accessory. The ST43401N/ND drives consist of a head and disc assembly (HDA) with two circuit boards, and the ST43402ND drive consists of an HDA and three circuit boards.
  • Page 16 ST43401N/ND, ST43402ND User’s Manual, Rev. B When the drive is not powered on, the heads rest on the disc surface in a preassigned landing zone beyond the data zone. The actuator automatically latches in this position at shutdown for moving or shipping protection. When the drive is activated to bring the discs up to speed, the heads fly on a cushion of air close to the disc surface.

  • Page 17: Section 2. Installation

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Section 2. Installation/Abschnitt 2. Installation The information contained in this section describes installation and initial checkout of the drive. Site requirements The site requirements considered are environment, airflow, space, power, grounding, and interface. Voraussetzungen am Aufstellungsort Zu den Voraussetzungen am Aufstellungsort gehören Umgebung,...
  • Page 18 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 2. Environmental requirements Conditions Specifications Operating environment Temperature Range of 5°C to 50°C (41°F to 122°F) with a maximum change of 20°C (36°F) per hour Humidity Range of 5% to 95% relative A maximum wet bulb temperature of 26°C (79°F)
  • Page 19 ST43401N/ND, ST43402ND User’s Manual, Rev. B Tabelle 2. Umgebungsbedingungen des Laufwerkes Bedingungen Technische Daten Betriebsumgebung Temperatur 5°C bis 50°C mit einer maximalen Schwankung von 20°C pro Stunde Relative Luftfeuchtigkeit 5% bis 95% Maximale Naßthermometertemperatur von 26°C Luftdruck 305 m bis 3.048 m; 104 kPa bis 69 kPa –...
  • Page 20 ST43401N/ND, ST43402ND User’s Manual, Rev. B Air-flow requirements The enclosure design must ensure adequate cooling for the drive. Note that the fan in the power supply cools only the power supply’s internal parts. The drive’s product specification (document 64403603) describes how to evaluate the air-flow design.
  • Page 21 ST43401N/ND, ST43402ND User’s Manual, Rev. B Note. Air flows in the direction shown (front to back) or in reverse direction (back to front) Note. Air flows in the direction shown or in reverse direction (side to side) Figure 4. Suggested air flow/Empfohlener Luftstromverlauf...
  • Page 22 ST43401N/ND, ST43402ND User’s Manual, Rev. B Space requirements The drive is designed to be mounted in one of the three orientations shown in Figure 5. The drive may be mounted on its base or on either side. The physical dimensions of the drive are shown in Figure 6. The drive weighs 3.6 kg (8.0 lb).
  • Page 23 ST43401N/ND, ST43402ND User’s Manual, Rev. B Figure 5. Mounting orientations/ Montageorientierungen...
  • Page 24 ST43401N/ND, ST43402ND User’s Manual, Rev. B 82.55 mm 3.25 in 203.20 mm 8.00 in max 149.35 mm 5.88 in Figure 6. Dimensions of the drive/ Laufwerkabmessungen...
  • Page 25 ST43401N/ND, ST43402ND User’s Manual, Rev. B Power requirements The voltage and current requirements for a single drive at cylinder 0 are shown in Table 3. Ensure that your power supply meets these requirements. Table 3. Single drive voltage and current requirements...
  • Page 26 ST43401N/ND, ST43402ND User’s Manual, Rev. B continued from previous page Maximum Current Limits 3,4,8,9 Regulation SCSI single-ended interface (ST43401N) 1,2,6 Maximum operating current Average idle current Maximum starting current Maximum seek current SCSI differential interface (ST43401ND) 1,2,6 Maximum operating current...
  • Page 27 ST43401N/ND, ST43402ND User’s Manual, Rev. B Grounding requirements A safety ground must be provided by the site AC power system. The green wire (or green wire with yellow stripe) in the AC power cord provides the safety ground connection between the power supply and the site AC power system.
  • Page 28 ST43401N/ND, ST43402ND User’s Manual, Rev. B A connector (J6) at the back of the drive accepts the I/O cable that connects it to the system. The daisy-chain cable is a continuous unshielded cable having one connector for each drive it connects to.
  • Page 29 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 4. Unshielded single-ended I/O cabling (P cable) Even pin Signal name numbers DB– (12) DB– (13) DB– (14) DB– (15) DB– (P1) DB– (0) DB– (1) DB– (2) DB– (3) DB– (4) DB– (5) DB–...
  • Page 30 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 5. Unshielded differential I/O cabling (P cable) Even pin Signal name numbers DB– (12) DB– (13) DB– (14) DB– (15) DB– (P1) GROUND DB– (0) DB– (1) DB– (2) DB– (3) DB– (4) DB–...
  • Page 31 ST43401N/ND, ST43402ND User’s Manual, Rev. B continued from previous page Even pin Signal name numbers GROUND DB– (8) DB– (9) DB– (10) DB– (11) Notes: 1. A minus sign indicates active low. 2. Eight-bit devices connected to the P cable must leave the following signals open: DB–...
  • Page 32 ST43401N/ND, ST43402ND User’s Manual, Rev. B Unpacking, inspection, and repacking After removing the packing material, inspect the drive for shipping damage. Save all packing materials for future use. The drive is shipped separately from any other items ordered for the installation.

  • Page 33: Installation Procedures

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Installation procedures With the site requirements completed, the enclosure designed, and the drive unpacked you are ready to begin the installation. The following procedures are included in drive installation: • Setting the circuit board jumpers •...
  • Page 34 ST43401N/ND, ST43402ND User’s Manual, Rev. B Write Protect/Enable (WRT) Fault LED connector Ready LED connector Slave Select (SLV) Write Protect/Enable (WRT) Write protect (disable writing) Write enable (enable writing) Slave Select (SLV) Master (master drive for spindle sync) Slave (slave drive unless selected as...
  • Page 35 ST43401N/ND, ST43402ND User’s Manual, Rev. B = Jumper connected = Jumper not connected = Non-applicable jumper (not relevant to the option discussed) Not used Not used Not used Write Protect/Enable (WRT) Slave Select (SLV) N/A WRT Write Protect/Enable (WRT) Write protect (disable writing)
  • Page 36 ST43401N/ND, ST43402ND User’s Manual, Rev. B Ground (GND) Pin 2 Pin 1 SCSI Bus Select Mode (SBS) ID_A0 (A0) ID_A1 (A1) ID_A2 (A2) ID_A3 (A3) ID_B0 (B0) ID_B1 (B1) ID_B2 (B2) ID_B3 (B3) Port A SCSI ID Port A SCSI ID = 0...
  • Page 37 ST43401N/ND, ST43402ND User’s Manual, Rev. B LED 4 (L4) Write Protect/Enable LED (WPL) Port B Active LED (PB) Port A Active LED (PA) Ready LED (RL) LED 6 N/A (L6) Pin 2 Spinup Delay Option (SDO) Fault LED (FL) Not Assigned (NA)
  • Page 38 ST43401N/ND, ST43402ND User’s Manual, Rev. B = Jumper connected Port B I/O = Jumper not connected = Non-applicable jumper (not relevant to the option discussed) Enable/Disable Port A (EPA) Ground (GND) Enable/Disable Port B (EPB) Ground (GND) Enable/Disable Port A...
  • Page 39 ST43401N/ND, ST43402ND User’s Manual, Rev. B Installing a power supply A power supply is required to provide current to the disc drive. Several vendors offer power supplies that meet the disc drive’s power requirements. Ensure that the power supply you select meets these requirements as specified in Table 3.
  • Page 40 5. Remove the selected LED (if present) from the LED socket and insert the LED plug from the bezel into the socket. Control Board Socket Plug Active Bezel Mounting Boss Figure 13. Attaching a bezel (ST43401N/ND shown) Chassis Chassis Mounting Holes (2)
  • Page 41 ST43401N/ND, ST43402ND User’s Manual, Rev. B Mounting the drive Caution. When installing the drive, observe all precautions listed under “Electrostatic discharge protection” in the preface. Failure to ob- serve these precautions can result in serious damage to electronic assemblies. The drive may be secured to the enclosure using the tapped holes in either the sides or the bottom of the drive chassis.
  • Page 42 Screws (4) Pin 1 DC Power Cable Note: Either side- or bottom-mounting screws can be used with each drive orientation Figure 14. Mounting the drive (ST43401N/ND shown) DC power and pin connector assignments Power Supply Drive Power Pin Number +12 VDC...
  • Page 43 ST43401N/ND, ST43402ND User’s Manual, Rev. B Connecting the system I/O cabling Make sure the site has been prepared in accordance with the site require- ments information provided earlier in this section. This procedure describes how to cable the system in a daisy-chain configuration, which was discussed earlier in this section in “Interface requirements.”...
  • Page 44 ST43401N/ND, ST43402ND User’s Manual, Rev. B ST43402ND drives ST43402ND drives have two I/O connectors as shown in Figure 16. Both of these I/O connectors (one for Port A and the other for Port B) are located on the I/O board. Figure 16 shows how typical I/O cables connect to the I/O board.
  • Page 45 ST43401N/ND, ST43402ND User’s Manual, Rev. B Figure 17 shows how the terminator resistor-paks are attached on ST43401N drives (single-ended I/O). The terminator resistor-paks, which are single inline packages, mount in the rows of holes located in the control board. Ensure that they are installed with the correct orientation (indicated by a dot above pin 1) to terminate these drives.
  • Page 46 ST43401N/ND, ST43402ND User’s Manual, Rev. B Figure 18 shows how the terminator resistor-paks are attached on ST43401ND drives (differential I/O). These terminator resistor-paks, which are dual inline packages, mount in sockets in the control board. These terminators are also marked with a dot above pin 1.
  • Page 47 ST43401N/ND, ST43402ND User’s Manual, Rev. B Grounding the system Grounding the system through the power cables and I/O cables is usually sufficient to protect against noise and emissions. Synchronizing the spindle The spindle sync feature makes it possible to synchronize the spindle rotation of a group of disc drives.
  • Page 48 To enable the feature, it is necessary to run an additional daisy-chain cable from drive to drive and to make a master/slave selection for each drive. Connector J7 is used by ST43401N/ND drives. Connector J5 on the control board handles the cable connections on ST43402ND drives. Master/slave selection is made by a jumper on connector J4A.
  • Page 49 ST43401N/ND, ST43402ND User’s Manual, Rev. B Cable from Preceding Unit Cable to Next Unit Slave Select Select Plug (removed = master) Figure 21. Making ST43402ND spindle sync connections Pin 1 Control Board...
  • Page 50 ST43401N/ND, ST43402ND User’s Manual, Rev. B For each drive in the middle of the daisy chain, the cable from the preceding unit connects to one row of pins in (row A or row B), and the cable to the next unit connects to the other row of pins.
  • Page 51 ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification After installing the drive, follow the sequence outlined below for initial startup. 1. Place the on/standby switch in the on ( l ) position. What follows depends on the setting of the Start Command option and the Spinup Delay option jumpers.

  • Page 53: Section 3. Operation

    LED is located either on the control board or on an optional bezel (if the bezel is installed). Figure 22 shows the LED indicators on ST43401N/ND drives, and they are explained in Table 6. Figure 23 shows the LED indicators on ST43402ND drives; they are explained in Table 7.
  • Page 54 ST43401N/ND, ST43402ND User’s Manual, Rev. B Socket for Active LED (red) Ready LED (green) Control Board Figure 22. LEDs on ST43401N/ND drives Heartbeat LED (green) Active LED (on optional bezel)
  • Page 55 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 6. LED functions for ST43401N/ND drives LED indicator Function Drive control board Ready LED This LED flashes during the power-on sequence until (green) the discs are up to speed and the heads are loaded.
  • Page 56 ST43401N/ND, ST43402ND User’s Manual, Rev. B Socket for Active LED (red) Heartbeat LED (green) Ready LED (green) Control Board Port A Enabled LED (green) Port B Active LED (red) Port B Enabled LED (green) Figure 23. LEDs on ST43402ND drives...
  • Page 57 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 7. LED functions for ST43402ND drives LED indicator Function Drive control board Ready LED This LED flashes during the power-on sequence until (green) the discs are up to speed and the heads are loaded.
  • Page 58 If you wish to verify that the drive has completed its power-on sequence, access the drive and then check that its Ready LED is on steady and that the Heartbeat LED is blinking (see Figure 22 for ST43401N/ND drives or Figure 23 for ST43402ND drives).

  • Page 59: Section 4. Parts Data

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Section 4. Parts data This section lists part numbers of options and accessories that can be used in a drive installation. Because the drive is depot repairable, there are no field- replaceable parts. If the drive requires maintenance, refer to the instructions in Section 5.
  • Page 60 ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 8. Options and accessories Part number Description 12263496 Static ground wrist strap, 6 1/2 to 8-inch wrist I/O cables (unshielded) External terminators 96752447 Terminator resistor-pak, single-ended 70906701 Terminator resistor-pak, differential 70935801 Terminator adapter cable assembly, differential 75168323 AC power cord set, 100–120V, 60 Hz, 5-15P...

  • Page 61: Section 5. Maintenance

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Section 5. Maintenance This section contains the following maintenance information: • Observing maintenance precautions • Arranging for depot repair • Removing and replacing a drive • Packing a drive for shipment Observing maintenance precautions Because the drive is depot repairable, there are no field-replaceable parts.

  • Page 62: Removing And Replacing A Drive

    ST43401N/ND, ST43402ND User’s Manual, Rev. B Arranging for depot repair Before returning any units to Seagate, it is necessary to obtain a returned material authorization (RMA) number. To get the number, you will need to know the part number and serial number of the unit. These numbers appear on a label located on the side of the HDA.
  • Page 64 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Publication Number: 83327720, Rev. B, Printed in USA...

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