Page 2 - Contents; Seagate
Contents Preface .................................................................. 1 Electrostatic discharge protection ........................... 1 Important safety information and precautions ......... 2 Wichtige Sicherheitshinweise ............................... 5 Technical support services .....
Page 3 - Preface; Barracuda 2LP Product; Electrostatic discharge protection
Barracuda 2LP Installation Guide, Rev. E 1 Preface This manual contains information for users of theSeagate ® ST31250 and ST32550 Barracuda™ 2LP SCSI disc drives. It provides support services, performancespecifications, and initial setup information. Additionalinformation is available in the Barracu...
Page 4 - Important safety information and precautions
2 Barracuda 2LP Installation Guide, Rev. E • Ground yourself to the drive whenever the drive elec- tronics are or will be exposed. Connect yourself toground with a wrist strap (Seagate part number12263496). Connection may be made to any groundedmetal assembly. As a general rule, remember that youand...
Page 7 - Wichtige Sicherheitshinweise
Typical applications of these disc drives include cus-tomer packaging and subsystem design. Safety agen-cies conditionally certify component assemblies, such asthe Barracuda disc drive, based on their final acceptabil-ity in the end-use product. The subsystem designers areresponsible for meeting the...
Page 12 - Technical support services
Technical support services Seagate Technology provides technical support litera-ture and diagnostic utilities to authorized distributors.Please contact your dealer for technical support andinstallation troubleshooting. Product technical support isavailable for all Seagate products by calling the Sea...
Page 15 - General description
Barracuda 2LP Installation Guide, Rev. E 13 Figure 1. Barracuda 2LP disc drive (N/ND model shown) SCSI I/O Connector DC Power Connector General description Barracuda 2LP SCSI disc drives are high-speed, ran-dom-access digital-data storage devices. The drive is a component for installation in an encl...
Page 16 - Characteristics
14 Barracuda 2LP Installation Guide, Rev. E Characteristics ST31250 ST32550 Interface Fast SCSI-2 1 Fast SCSI-2 1 Capacity Unformatted 1,205.3 Mbytes 2,541.3 Mbytes Formatted 2 1,020.9 Mbytes 2,147.4 Mbytes Recording Cylinders (user) 3,711 3,510 Read/write data heads 5 11 Servo heads 1 1 Avg bytes/t...
Page 20 - cuda 2LP Product Manual.
18 Barracuda 2LP Installation Guide, Rev. E 11 No terminator power. See Section 11.7.3.4 in the Barra- cuda 2LP Product Manual. 12 All power-saving features are enabled (ASA II code only). 13 Seeking is defined as a third-stroke seek at OD. The com-mand is issued every 20 msec. 14 Read track is defi...
Page 21 - Initial setup information; Drive models; WC drives; General information; The following general information topics are discussed:
Barracuda 2LP Installation Guide, Rev. E 19 Initial setup information The general information beginning on this page applies toall of the Barracuda 2LP drive models. After reading thegeneral information topics, refer to the appropriate drive-specific section listed below for additional informationab...
Page 22 - SCSI ID jumpers
20 Barracuda 2LP Installation Guide, Rev. E *This mounting procedure does not apply to WC or DCmodel drives. To mount a WC or DC drive, plug the driveinto the system's single connector attachment (SCA)position on the system's back panel. SCSI ID jumpers Each device on the SCSI chain must have a uniq...
Page 23 - Drive termination; Figure 2. SCSI bus termination
Barracuda 2LP Installation Guide, Rev. E 21 Also check your system or controller user’s manual toensure that you have not violated its SCSI ID numberingrecommendations. Drive termination If you are installing a Barracuda 2LP drive in a system thathas other SCSI devices installed, terminate only the ...
Page 25 - Providing adequate cooling
Barracuda 2LP Installation Guide, Rev. E 23 Providing adequate cooling The enclosure design must ensure adequate cooling forthe drive. The maximum ambient temperature is 50 o C. The drive’s product manual (83328930) describes howto evaluate the air-flow design. The evaluation consistsof ensuring tha...
Page 26 - Kühlung des Systems
24 Barracuda 2LP Installation Guide, Rev. E Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichendeK ü h l u n g d e s L a u f w e r k e s g e w ä h r l e i s t e n . D i eUmgebungstemperatur darf maximal 50 o C betragen. Die Produkthandbuch Barracuda 2LP (Dokument83328930) enthalten Anwei...
Page 28 - Mounting the drive and connecting cables; Mount the drive to the host system’s chassis using four
26 Barracuda 2LP Installation Guide, Rev. E Mounting the drive and connecting cables Do not touch the connector pins or any components onthe control board without observing static-discharge pre-cautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizon-...
Page 33 - Setzen Sie das Gehäuseoberteil des Host-Systems; Formatting the drive; Boot the system from a system floppy disc or from a
Barracuda 2LP Installation Guide, Rev. E 31 Systemgehäuse nicht an die HDA/PCB-Erdunganschließen wollen, müssen Sie das Laufwerk aufnichtleitende Weise (galvanisch isoliert) im Host-System einbauen. Die daraus u.U. resultierendeverstärkte elektromagnetische Strahlung fällt inden Zuständigkeitsbereic...
Page 35 - Figure 5. Setting the SCSI ID; Setting the SCSI ID jumpers
Barracuda 2LP Installation Guide, Rev. E 33 Figure 5. Setting the SCSI ID J4 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 J4 Pin 1 Pin 1 SCSI ID = 0 (default) (front view of J4) Pin 2 Setting the SCSI ID jumpers Use the J4 connector to set the SCSI ID (see Figu...
Page 36 - Figure 6. Terminating the drive; Terminating the drive
Figure 6. Terminating the drive 34 Barracuda 2LP Installation Guide, Rev. E J2 Pin 1 Pin 1 Pin 6 J1 Pin 1 Pin 2 Pin 6 Disable SCSI terminator Enable SCSI terminator (default) J1 N/ND drives Terminating the drive ST31250N and ST32550N drives are terminated withpermanently mounted IC active terminator...
Page 37 - Terminator power; Figure 7. Setting terminator power jumpers
Terminator power There are four possible terminator power configurationsfor ST31250N and ST32550N drives (see Figure 7). Youwill not normally need to change this option and can leavethe drive configured as it was shipped from the factory. ST31250ND and ST32550ND drives should be config-ured with a j...
Page 38 - Synchronizing spindles; Figure 8. Spindle sync connectors
36 Barracuda 2LP Installation Guide, Rev. E N/ND drives Synchronizing spindles Use pins 5 and 6 on the J4 connector to attach the spindlesync cable. See Figure 8. Figure 8. Spindle sync connectors J2 J4 Spindle sync cable connector J4 Pin 1 Pin 1 Spindle Sync Reference Spindle Sync Ground (front vie...
Page 39 - Other applicable jumper options; Several other jumper options are available as illustrated.; Figure 9. Additional jumper options
N/ND drives Other applicable jumper options Several other jumper options are available as illustrated. J2 J4 Remote LED connector* J4 Pin 1 Pin 1 Reserved GND (cathode)POS (anode) (front view of J4) Pin 2 Enable parity check of SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Pin 1 ...
Page 40 - Figure 10. Setting the SCSI ID
38 Barracuda 2LP Installation Guide, Rev. E W/WD drives Setting the SCSI ID jumpers Use the J5 connector to set the SCSI ID (Figure 10). Tochange the SCSI ID, install jumpers on the appropriatepins as shown in the illustration. DC PowerConnector SCSI I/O Connector SCSI ID = 8 SCSI ID = 9 SCSI ID = 1...
Page 42 - Figure 12. Setting terminator power jumpers
40 Barracuda 2LP Installation Guide, Rev. E W/WD drives Terminator power There are four possible terminator power configurationsfor ST31250W and ST32550W drives (see Figure 12).You will not normally need to change this option and canleave the drive configured as it was shipped from thefactory. ST312...
Page 43 - Figure 13. Spindle sync connectors
Barracuda 2LP Installation Guide, Rev. E 41 W/WD drives Synchronizing spindles Use pins 11 and 12 on the J5 connector to attach thespindle sync cable. See Figure 13. DC Power Connector SCSI I/O Connector J5 4P 3P 2P 1P Pin 1 Pin 1 SS J5 Spindle sync cable connector Spindle Sync Reference Spindle Syn...
Page 44 - Other option jumpers are available as illustrated below.; Figure 14a. Additional jumper options
42 Barracuda 2LP Installation Guide, Rev. E W/WD drives Other applicable jumper options Other option jumpers are available as illustrated below. J2 Pin 1 Enable parity check of SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Parity Check option Write protect = Off (enables writing ...
Page 45 - Figure 14b. Additional jumper options
J2 J4 J4 Pin 1 Pin 1 (front view of J4) Pin 2 Pin 1 SCSI ID = 0 Fault LED pin (+) SCSI ID = 1 Vendor Unique SCSI ID = 2 SSREF (+) SCSI ID = 3 Unit Active LED pin (+) Enable termination Ground +5 volts Not connected Reserved SCSI I/O Connector J5 Pin 1 Pin 1 Remote unit active LED connector GND (cath...
Page 47 - Applicable jumper options; Option jumpers are available as illustrated below.; Figure 15a. Jumper options
Barracuda 2LP Installation Guide, Rev. E 45 WC/DC drives Applicable jumper options Option jumpers are available as illustrated below. J2 Pin 1 Enable parity check of SCSI bus (default). Disable parity check. J2 Pin 1 Pin 2 Reserved Parity Check option Write protect = Off (enables writing – default) ...
Page 48 - Figure 15b. Additional jumper options
46 Barracuda 2LP Installation Guide, Rev. E Figure 15b. Additional jumper options J2 J4 J4 Pin 1 Pin 1 (front view of J4) Pin 2 Pin 1 SCSI ID = 0 Fault LED pin (–) SCSI ID = 1 Vendor Unique SCSI ID = 2 SSREF (+) SCSI ID = 3 Unit Active LED pin (–) Not used Ground +5 volts Not connected Reserved WC/D...