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Seagate Technology
Seagate Technology, Inc. is a leading data technology company providing products for storing, managing and accessing digital information. Seagate develops and manufactures some of the industry's most advanced information technologies, including disc and tape storage devices, magnetic recording heads and media, precision motors, microelectronics, and data access and management software. With $9.0 billion in revenue, operations in 22 countries and over 100,000 employees worldwide, the Scotts Valley, CA-based company is the world's largest manufacturer of disc drives and related components and one of the globe's largest industrial corporations.
Products[edit]
- Seagate ST38641A
- Seagate ST3120A
- Seagate ST31200N
- Seagate ST3630A
- Seagate 9A8003-101
- Seagate ST-4038
- Seagate ST-412
- Seagate ST-225
- Seagate ST-157A
- Seagate ST-4026
- Seagate Medalist 3221 ST33221A
Cheetah Family[edit]
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 Ultra SCSI and Fibre Channel interfaces
- Advanced SCSI Architecture II (ASA II)
- Average seek times as fast as 7.5 msec
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.
| Cheetah Family | ST34501N
Cheetah 4LP |
ST34501FC
Cheetah 4LP |
ST19101N
Cheetah 9 |
ST19101FC
Cheetah 9 |
|---|---|---|---|---|
|
Capacity,
Formatted |
4.55 |
4.55 |
9.1 |
9.1 |
| Interface |
Ultra SCSI |
Fibre Channel |
Ultra SCSI |
Fibre Channel |
| 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 |
1,024 |
512 |
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 |
6,526 |
6,526 |
6,526 |
6,526 |
| 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) |
12.0 |
15.5 |
20.7 |
23.7 |
| 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 |
Articles[edit]
- Seagate ST43400N issues on SGI
- MR Heads: The Next Step in Capacity and Performance
- DDS-3: DAT Gets Bigger and Better
- Innovative Engineering Creates Cool Cheetah Drive
- PRML: Seagate Uses Space Age Technology Today
- Seagate's Cheetah Outruns Them All
- The UltraSCSI Buzz
- Travan TR-4 Technology
- Enhanced IDE Faces Many Challenges
- Seagate's Advanced SCSI Architecture II
- Playing it S.M.A.R.T.
- Ultra SCSI