Cheetah Family 3.5-inch Form-Factor Industry's highest performance 10,000-RPM 3.5-inch disc drives Embedded servo provides uninterrupted data-transfer for A/V applications Unsurpassed formatted transfer rates of 11.3 to 16.8 Mbytes per second High performance UltraSCSI and Fibre Channel interfaces Advanced SCSI Architecture II (ASA II) Average seek times as fast as 7.5 msec Cheetah The Cheetah family of disc drives offers the industry's highest random I/O transaction performance and astounding formatted data-transfer rates. These drives incorporate leading edge technology such as MR heads, a PRML channel and embedded servo. The Cheetah family provides unmatched performance for demanding application platforms such as workstations, network file servers and enterprise-wide servers. This family is the superior solution for nonlinear video editing and graphics-visualization requirements and transaction-intensive busines applications such as banking or reservation systems. The 1- and 1.6-inch-high Cheetah drives are available in formatted capacities of 4.55 and 9.1 Gbytes. Read More on the Cheetah Family:      "This Cheetah Lives Up to Its Namesake" ZDNet, January 29, 1997      "Seagate's Cheetah Outruns Them All"      "The UltraSCSI Buzz" Where-to-Buy Cheetah Disc Drives View or print this Data Sheet in Adobe Acrobat (PDF) format Cheetah Family ST34501N ST34501W ST34501WD ST34501WC ST34501DC Cheetah 4LP ST34501FC Cheetah 4LP ST19101N ST19101W ST19101WD ST19101WC ST19101DC Cheetah 9 ST19101FC Cheetah 9 Capacity, Formatted Gbytes (512 bytes/sector) 4.55 4.55 9.1 9.1 Interface UltraSCSI (8- and 16-bit, SCA) Fibre Channel (Dual Port) UltraSCSI (8- and 16-bit, SCA) Fibre Channel (Dual Port) Performance Internal Transfer Rate, ZBR (Mbits/sec) 122 to 177 122 to 177 122 to 177 122 to 177 Internal Formatted Transfer Rate, ZBR (Mbytes/sec) 11.3 to 16.8 11.3 to 16.8 11.3 to 16.8 11.3 to 16.8 External Transfer Rate 8-bit/16-bit (Mbytes/sec) 20/40 100 per port 20/40 100 per port Multisegmented Cache (Kbytes) 512 (2,048 optional) 1,024 512 (2,048 optional) 1,024 Track-to-Track Seek Read/Write(msec) 0.78/1.04 0.78/1.04 0.78/1.04 0.78/1.04 Average Seek, Read/Write (msec) 7.5/8.5 7.5/8.5 8/9 8/9 Maximum Seek Read/Write (msec) 18 19 18 19 Average Latency (msec) 2.99 2.99 2.99 2.99 Spindle Speed (RPM) 10,033 10,033 10,033 10,033 Configuration/Organization Discs 4 4 8 8 Read/Write Heads 8 8 16 16 Servo Heads Embedded Embedded Embedded Embedded Bytes per Sector (typ) 512 512 512 512 Sectors per Drive (512 bytes/sector) 8,890,080 8,890,080 17,839,344 17,839,344 Cylinders 6,582 6,582 6,582 6,582 Recording Method PRML (0,4,4) PRML (0,4,4) PRML (0,4,4) PRML (0,4,4) Reliability and Data Integrity MTBF (power on hours) 1,000,000 1,000,000 1,000,000 1,000,000 Nonrecoverable Read Errors per Bits Read 1 per 1014 1 per 1014 1 per 1014 1 per 1014 Limited Warranty (yrs) 5 5 5 5 Power Requirements +12 VDC +/-5% (amps typ/max) 0.82/2.0 0.94/3.0 1.42/4.0 1.6/4.2 +5 VDC +/-5% (amps) 0.74 1.15 0.74 1.15 Power (Idle watts) 13.5 16.2 20.7 24.6 Environmental Operating Temperature (°C) 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 Physical Height (inches/mm) 1.0/25.4 1.0/25.4 1.63/41.4 1.63/41.4 Width (inches/mm) 4.0/101.6 4.0/101.6 4.0/101.6 4.0/101.6 Depth (inches/mm) 5.75/146.1 5.75/146.1 5.75/146.1 5.75/146.1 Weight (lbs/kgs) 1.33/0.60 1.33/0.60 2.25/1.02 2.25/1.02 Capacity calculated with typical sparing. Sparing is user optional. Specifications subject to change without notice.

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