Product Manual
Page 4
No part of Seagate Technology, Inc. Seagate reserves the right to change, without written permission from Seagate Technology, Inc. Other product names are registered trademarks of this publication may be reproduced in any form without notice, product offerings or specifications. D February 1996 Seagate® , Seagate Technology® , and the Seagate logo are registered trademarks or trademarks of Seagate Technology, Inc. Barracuda™ is a trademark of their owners. All rights reserved Publication number: 83328880, Rev. © 1996 Seagate Technology, Inc.
No part of Seagate Technology, Inc. Seagate reserves the right to change, without written permission from Seagate Technology, Inc. Other product names are registered trademarks of this publication may be reproduced in any form without notice, product offerings or specifications. D February 1996 Seagate® , Seagate Technology® , and the Seagate logo are registered trademarks or trademarks of Seagate Technology, Inc. Barracuda™ is a trademark of their owners. All rights reserved Publication number: 83328880, Rev. © 1996 Seagate Technology, Inc.
Product Manual
Page 7
... 6.2.1 Mean time between failures (MTBF 22 6.2.2 Air flow ...22 6.2.3 Preventive maintenance 30 6.2.4 Service life ...30 6.2.5 Service philosophy 30 6.2.6 Installation ...30 6.2.7 Service tools 30 6.2.8 Hot plugging Barracuda 4 disc drives 31 7.0 Physical/electrical specifications 33 7.1 AC power requirements 33 7.2 DC power requirements 33 7.2.1 Conducted noise immunity 34 7.2.2 Power sequencing 34 7.2.3 12V current profile 35
... 6.2.1 Mean time between failures (MTBF 22 6.2.2 Air flow ...22 6.2.3 Preventive maintenance 30 6.2.4 Service life ...30 6.2.5 Service philosophy 30 6.2.6 Installation ...30 6.2.7 Service tools 30 6.2.8 Hot plugging Barracuda 4 disc drives 31 7.0 Physical/electrical specifications 33 7.1 AC power requirements 33 7.2 DC power requirements 33 7.2.1 Conducted noise immunity 34 7.2.2 Power sequencing 34 7.2.3 12V current profile 35
Product Manual
Page 9
... reference index signal driver/receiver combination 55 Figure 26. ST15150N/ND drives physical interface 68 Figure 29. ST15150WC/DC drives physical interface 68 Figure 31. Non-shielded SCSI device connector 75 Figure 34. Barracuda 4 disc drive 1 Figure 2. Mounting configuration dimensions for W/WD drives 40 Figure 17. ST15150N/ND drives configuration select header specification 56 Figure 27. Wide SCSI...
... reference index signal driver/receiver combination 55 Figure 26. ST15150N/ND drives physical interface 68 Figure 29. ST15150WC/DC drives physical interface 68 Figure 31. Non-shielded SCSI device connector 75 Figure 34. Barracuda 4 disc drive 1 Figure 2. Mounting configuration dimensions for W/WD drives 40 Figure 17. ST15150N/ND drives configuration select header specification 56 Figure 27. Wide SCSI...
Product Manual
Page 11
... Product Manual (part number 77738479) describes the general SCSI interface characteristics of this manual. This manual defines the performance characteristics of Seagate drives. Barracuda 4 disc drives ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Barracuda drives support the Small Computer System Interface-2 (SCSI-2) as described in the ANSI SCSI and SCSI-2 interface specifications to the extent described...
... Product Manual (part number 77738479) describes the general SCSI interface characteristics of this manual. This manual defines the performance characteristics of Seagate drives. Barracuda 4 disc drives ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Barracuda drives support the Small Computer System Interface-2 (SCSI-2) as described in the ANSI SCSI and SCSI-2 interface specifications to the extent described...
Product Manual
Page 13
... drive is supplied as the Barracuda disc drive, based on their product. The Barracuda disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No. 950-M89, and VDE certified to VDE 0805 and EN60950. Engineering test characterizations of radiated emissions are available from the Seagate safety department. 2.2 Applicable reference documents Barracuda 4 Installation Guide Seagate...
... drive is supplied as the Barracuda disc drive, based on their product. The Barracuda disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No. 950-M89, and VDE certified to VDE 0805 and EN60950. Engineering test characterizations of radiated emissions are available from the Seagate safety department. 2.2 Applicable reference documents Barracuda 4 Installation Guide Seagate...
Product Manual
Page 15
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The Barracuda drive's interface supports multiple initiators, disconnect/ reconnect, self-configuring host software, and automatic features that relieve the host from knowing the physical characteristics of the original equipment manufacturer (OEM) marketplace. The drive contains no replaceable parts. Opening the HDA voids your warranty. Barracuda 4 disc drive... exploded view is environmentally sealed at the factory. D 5 3.0 General description Barracuda drives are low cost, high performance, random access storage devices designed to meet the...
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The Barracuda drive's interface supports multiple initiators, disconnect/ reconnect, self-configuring host software, and automatic features that relieve the host from knowing the physical characteristics of the original equipment manufacturer (OEM) marketplace. The drive contains no replaceable parts. Opening the HDA voids your warranty. Barracuda 4 disc drive... exploded view is environmentally sealed at the factory. D 5 3.0 General description Barracuda drives are low cost, high performance, random access storage devices designed to meet the...
Product Manual
Page 16
...a low inertia, balanced, patented, straight arm design provides excellent performance with minimal power dissipation. Barracuda drives decode track 0 location data from movement during shipping and handling. 6 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The shipping lock disengages when power is applied to ...the landing zone when the power is removed. D Barracuda drives use a dedicated landing zone at the innermost radius...
...a low inertia, balanced, patented, straight arm design provides excellent performance with minimal power dissipation. Barracuda drives decode track 0 location data from movement during shipping and handling. 6 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. The shipping lock disengages when power is applied to ...the landing zone when the power is removed. D Barracuda drives use a dedicated landing zone at the innermost radius...
Product Manual
Page 17
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 7 4.0 Standard features Barracuda 4 drives have the following standard features: • Integrated SCSI controller • Single-ended or differential SCSI drivers and receivers • Asynchronous and synchronous data transfer protocols ...
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 7 4.0 Standard features Barracuda 4 drives have the following standard features: • Integrated SCSI controller • Single-ended or differential SCSI drivers and receivers • Asynchronous and synchronous data transfer protocols ...
Product Manual
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... part number 70869751 • Single-unit shipping pack kit • Barracuda 4 Installation Guide, part number 83328870 • Adapter accessory frame kit, part number 75790701 (adapts a 3.5-inch drive to obtain different formatted capacities. Users planning single-unit distribution should specify ...an LED with cable that , when glowing, indicates the drive is normally shipped in the SCSI-2 Interface Product Manual (part number 77738479). 8 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. ST15150 drives have nine (9) spare sectors per cylinder and one (1) ...
... part number 70869751 • Single-unit shipping pack kit • Barracuda 4 Installation Guide, part number 83328870 • Adapter accessory frame kit, part number 75790701 (adapts a 3.5-inch drive to obtain different formatted capacities. Users planning single-unit distribution should specify ...an LED with cable that , when glowing, indicates the drive is normally shipped in the SCSI-2 Interface Product Manual (part number 77738479). 8 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. ST15150 drives have nine (9) spare sectors per cylinder and one (1) ...
Product Manual
Page 21
..., and during reassign block functions). D 11 5.0 Performance characteristics This section provides performance-related characteristics and features of Barracuda 4 drives. 5.1 Internal drive characteristics Drive capacity, Mbytes unformatted 5,062 Read/write data heads, maximum (physical) 21 Bytes per track, average bytes 64,160... is received, the command is queued until 10 minutes have elapsed. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. If thermal calibration is complete, the drive continues the calibration for thermal calibration will not interrupt an active SCSI command...
..., and during reassign block functions). D 11 5.0 Performance characteristics This section provides performance-related characteristics and features of Barracuda 4 drives. 5.1 Internal drive characteristics Drive capacity, Mbytes unformatted 5,062 Read/write data heads, maximum (physical) 21 Bytes per track, average bytes 64,160... is received, the command is queued until 10 minutes have elapsed. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. If thermal calibration is complete, the drive continues the calibration for thermal calibration will not interrupt an active SCSI command...
Product Manual
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22 6.1.3 6.2 6.2.1 6.2.2 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Also, choose the shortest possible path between failures (MTBF) The production disc drive achieves an MTBF of 800,000 hours when operated in the period Estimated power-on operating hours means the...(15h), no more than one or more fans, either forcing or drawing air as failures for the Barracuda 4 drive must be used to minimize the travel length of Barracuda 4 disc drives by drive malfunction. If a reseek is provided using one recoverable seek error in the illustrations. Mean time between ...
22 6.1.3 6.2 6.2.1 6.2.2 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Also, choose the shortest possible path between failures (MTBF) The production disc drive achieves an MTBF of 800,000 hours when operated in the period Estimated power-on operating hours means the...(15h), no more than one or more fans, either forcing or drawing air as failures for the Barracuda 4 drive must be used to minimize the travel length of Barracuda 4 disc drives by drive malfunction. If a reseek is provided using one recoverable seek error in the illustrations. Mean time between ...
Product Manual
Page 34
...temperatures. Continuous operation at the maximum case temperature is intended for the Barracuda electronics and HDA is provided, place the drive in Figure 6. D To confirm that the required cooling for short time periods only. 24 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. To obtain the maximum ...temperature for each of the components listed on the next several pages. Air-flow cooling ST15150N drives single-ended Card AYHX AYHX AYHX AYHX AYHX HDA housing Component Polar Writer CSAW Pike Driver Reference 1 2 3 4 5 Figure 13 MTBF 800k...
...temperatures. Continuous operation at the maximum case temperature is intended for the Barracuda electronics and HDA is provided, place the drive in Figure 6. D To confirm that the required cooling for short time periods only. 24 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. To obtain the maximum ...temperature for each of the components listed on the next several pages. Air-flow cooling ST15150N drives single-ended Card AYHX AYHX AYHX AYHX AYHX HDA housing Component Polar Writer CSAW Pike Driver Reference 1 2 3 4 5 Figure 13 MTBF 800k...
Product Manual
Page 41
... SCSI bus must have ceased (for ST15150WC and ST15150DC drives, all term power jumpers accomplishes this. When removing a drive, disconnect the I /O processes to the drive you are not designed for the spindle to ensure data integrity. The disc drive motor should come to a complete stop . ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Notes. Ensure... voltage hazard is the responsibility of operation to stop prior to changing the plane of the systems integrator to the SCSI bus. D 31 6.2.8 Hot plugging Barracuda 4 disc drives Caution.
... SCSI bus must have ceased (for ST15150WC and ST15150DC drives, all term power jumpers accomplishes this. When removing a drive, disconnect the I /O processes to the drive you are not designed for the spindle to ensure data integrity. The disc drive motor should come to a complete stop . ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Notes. Ensure... voltage hazard is the responsibility of operation to stop prior to changing the plane of the systems integrator to the SCSI bus. D 31 6.2.8 Hot plugging Barracuda 4 disc drives Caution.
Product Manual
Page 43
... This section provides information relating to the physical and electrical characteristics of Barracuda 4 drives. 7.1 AC power requirements None. 7.2 DC power requirements The voltage and current requirements for ST15150N/ND/W/WD/WC/DC drives Voltage regulation [5] Notes N/W/WC ±5V[11] ±12V ...- 3.10 Delay motor start of spindle and must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is reached. DC power requirements for a single drive are shown below. Values indicated apply at OD DC X [1] 0.91 0....
... This section provides information relating to the physical and electrical characteristics of Barracuda 4 drives. 7.1 AC power requirements None. 7.2 DC power requirements The voltage and current requirements for ST15150N/ND/W/WD/WC/DC drives Voltage regulation [5] Notes N/W/WC ±5V[11] ±12V ...- 3.10 Delay motor start of spindle and must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is reached. DC power requirements for a single drive are shown below. Values indicated apply at OD DC X [1] 0.91 0....
Product Manual
Page 45
... begins to speed and the head-arm restraint is up to accelerate under current limiting after performing internal diagnostics. T7 Calibration is complete and the drive is as shown. 3.0 2.85 2.5 Peak AC Nominal (average) curve 2.0 1.9 1.5 +12V CURRENT (A) Minimum AC 1.0 0.5 T0 T1 0.0 0 T2 5 T3 ... See Table 1 for reading and writing. T5 The adaptive calibration sequence is applied to the data area. Typical Barracuda 4 drive +12V current profile T0 Power is performed. All times and currents are performed. See Note 1 of Table 1. ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
... begins to speed and the head-arm restraint is up to accelerate under current limiting after performing internal diagnostics. T7 Calibration is complete and the drive is as shown. 3.0 2.85 2.5 Peak AC Nominal (average) curve 2.0 1.9 1.5 +12V CURRENT (A) Minimum AC 1.0 0.5 T0 T1 0.0 0 T2 5 T3 ... See Table 1 for reading and writing. T5 The adaptive calibration sequence is applied to the data area. Typical Barracuda 4 drive +12V current profile T0 Power is performed. All times and currents are performed. See Note 1 of Table 1. ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
Product Manual
Page 53
The aluminum substrate is coated with a thin-film magnetic material, which has a proprietary protective layer for improved durability and environmental protection. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 43 8.0 Media characteristics This section provides information regarding the media used in Barracuda 4 disc drives. 8.1 Media description The media used on the drive has a diameter of approximately 95 mm (3.7 inches).
The aluminum substrate is coated with a thin-film magnetic material, which has a proprietary protective layer for improved durability and environmental protection. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 43 8.0 Media characteristics This section provides information regarding the media used in Barracuda 4 disc drives. 8.1 Media description The media used on the drive has a diameter of approximately 95 mm (3.7 inches).
Product Manual
Page 57
..., and ST15150DC models must be used to configure Barracuda 4 drives. ST15150WC/DC drives use J4 pin 6 for your particular system. Option headers may be terminated externally. D 47 10.0 Drive configuration This section describes how to customize many functions of two or more ST15150N/ ND/W/WD drives using option headers. ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
..., and ST15150DC models must be used to configure Barracuda 4 drives. ST15150WC/DC drives use J4 pin 6 for your particular system. Option headers may be terminated externally. D 47 10.0 Drive configuration This section describes how to customize many functions of two or more ST15150N/ ND/W/WD drives using option headers. ST15150N/ND/W/WD/WC/DC Product Manual, Rev.
Product Manual
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.... 10.4 Drive termination ST15150N To enable internal drive termination, install a jumper on J4 pins 11 and 12 as shown in the host equipment; however, this connection. ST15150W To enable internal drive termination, install a jumper on J01 pins 1 and 2 as shown in the Barracuda 4 family drives-do not ...want the system chassis to be connected to system integrators. This shield makes it easier to attach a braid or similar high-frequency grounding device. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Maximizing ...
.... 10.4 Drive termination ST15150N To enable internal drive termination, install a jumper on J4 pins 11 and 12 as shown in the host equipment; however, this connection. ST15150W To enable internal drive termination, install a jumper on J01 pins 1 and 2 as shown in the Barracuda 4 family drives-do not ...want the system chassis to be connected to system integrators. This shield makes it easier to attach a braid or similar high-frequency grounding device. ST15150N/ND/W/WD/WC/DC Product Manual, Rev. Maximizing ...