Barracuda 4LP Family 3.5-inch Disc Drives Low profile design 7,200-RPM, 4.17 msec average latency 8- and 16-bit UltraSCSI interface Fibre Channel-Arbitrated Loop (FC-AL) interface Single Connector Attachment (SCA) Advanced SCSI Architechture II (ASA II) MR heads, embedded servo and PRML channel Barracuda 4LP The Barracuda 4LP offers formatted capacities of 2.15 and 4.35 Gbytesin a low-profile 1-inch high design. With Advanced SCSI Architecture II,SCSI-3 SPI compliance and a range of interfaces including Ultra SCSI andFibre Channel Arbitrated Loop, the Barracuda 4LP continues Seagate's traditionof superior performance, quality and reliability. Read More on the Barracuda 4LP Family:      "PRML: Seagate Uses Space Age Technology Today"      "The UltraSCSI Buzz" Where-to-Buy Barracuda Disc Drives View or print this Data Sheet in Adobe Acrobat (PDF) format Barracuda 4LP Family ST32171N Barracuda 4LP ST32171W ST32171WD ST32171WC ST32171DC Barracuda 4LP ST32171FC Barracuda 4LP ST34371N Barracuda 4LP ST34371W ST34371WD ST34371WC ST34371DC Barracuda 4LP ST34371FC Barracuda 4LP Formatted Capacity, Gbytes (512 bytes/sector) 2.15 2.15 2.15 4.35 4.35 4.35 Interface UltraSCSI (8-bit) UltraSCSI (16-bit SCA) Fibre Channel Dual Port UltraSCSI (8-bit) UltraSCSI (16-bit SCA) Fibre Channel Dual Port Performance Internal Transfer Rate, ZBR (Mbits/sec) 75 to 120 75 to 120 75 to 120 75 to 120 75 to 120 75 to 120 External Transfer Rate (Mbytes/sec) 20 Sync 40 Sync 100 Sync 20 Sync 40 Sync 100 Sync Multisegmented Cache (Kbytes) 512 512 512 512 512 512 Track-to-Track Seek Read/Write (msec) 0.8/0.9 0.8/0.9 0.8/0.9 0.8/0.9 0.8/0.9 0.8/0.9 Average Seek (msec) 8/9 8/9 8/9 8/9 8/9 8/9 Maximum Seek (msec) 17/19 17/19 17/19 17/19 17/19 17/19 Spindle Speed (RPM) 7,200 7,200 7,200 7,200 7,200 7,200 Average Latency (msec) 4.17 4.17 4.17 4.17 4.17 4.17 Configuration/Organization Discs/Data Surfaces 3 3 3 5 5 5 Read/Write Heads 6 6 6 10 10 10 Servo Head Embedded Embedded Embedded Embedded Embedded Embedded Bytes per Sector (typ) 512 512 512 512 512 512 Cylinders 5,288 5,288 5,288 5,288 5,288 5,288 Recording Method PRML PRML PRML PRML PRML PRML Reliability and Data Integrity MTBF (power on hours) 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 Recoverable Read Errors per Bits Read 1 per 1010 1 per 1010 1 per 1010 1 per 1010 1 per 1010 1 per 1010 Nonrecoverable Read Errors per Bits Read 1 per 1014 1 per 1014 1 per 1014 1 per 1014 1 per 1014 1 per 1014 Seek Errors (per seek) 1 per 107 1 per 107 1 per 107 1 per 107 1 per 107 1 per 107 Limited Warranty (yrs) 5 5 5 5 5 5 Power Requirements +12 VDC +/-5% (amps typ/max) 0.46/1.8 0.46/1.8 0.46/1.8 0.54/1.8 0.54/1.8 0.54/1.8 +5 VDC +/-5% (amps) 0.54 0.54 0.54 0.54 0.54 0.54 Power (Idle watts) 9.0 9.0 9.0 10 10 10 Environmental Operating Temperature (°C) 5 to 50 5 to 50 5 to 50 5 to 50 5 to 50 5 to 50 Nonoperating Temperature (°C) -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 Physical Height (inches/mm) 1.0/25.4 1.0/25.4 1.0/25.4 1.0/25.4 1.0/25.4 1.0/25.4 Width (inches/mm) 4.0/101.6 4.0/101.6 4.0/101.6 4.0/101.6 4.0/101.6 4.0/101.6 Depth (inches/mm) 5.47/146.0 5.47/146.0 5.47/146.0 5.47/146.0 5.47/146.0 5.47/146.0 Weight (lb/kg) 1.4/0.57 1.4/0.57 1.4/0.57 1.5/0.68 1.5/0.68 1.5/0.68

Capacity calculated with typical sparing. Sparing is user optional.

Specifications subject to change without notice.

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