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CheetAh 15K.5
Best price/performance, lowest cost of
ownership disc drive |
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300, 146 and 73GB • 15K RPM • Ultra320 SCSI •
3 Gbit/sec SAS • 4 Gbit/sec FC
The Cheetah® 15K.5 hard drive enables manageable tiered storage solutions without compromising performance or reliability. Cheetah 15K.5 drives deliver cost-effective solutions, allowing systems to keep up with increasing performance needs over a longer period of time. |
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Key Features and Benefits
- 16-MB cache
- Perpendicular recording technology for maximum capacity
- Up to 125-MB/s sustained transfer rate
- 30% more IOPS than 10K 3.5-inch drives
- Reduced RAID rebuild times
- Highest reliability rating in the industry
- LOWER TOTAL COST OF OWNERSHIP
- Perpendicular recording is fundamentally superior, delivering
300GB capacity with 30 percent faster sequential performance
and the highest reliability rating of any 3.5-inch drive in the
industry.
- Enables higher performance with fewer drives, reducing
supporting infrastructure, maintenance and space needs while
boosting system reliability
- 30 percent more IOPS and over 20 percent faster response times
than 3.5-inch 10K drives; first drive to break 100-Mbyte sustained
transfer rate barrier
- Reduces RAID rebuild times while minimizing reliability risk
exposure; nonrecoverable error rate has been proved by a
factor of 10.
Applications
- Workstations
- Midrange and high-end servers
- Direct attached (JBOD/RAID) storage
- Storage Area Networks (SAN)
- Network attached storage (NAS)
- High-performance computing (scientific/technical data)
- Data streaming, mining, visualization and analysis
- Online transaction processing (OLTP)
- Collaboration (groupware, email, e-learning, messaging)
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Product Description
The new Cheetah 15K.5 enterprise disc drive
employs innovative perpendicular recording
technology to set new standards for storage costeffectiveness.
While doubling available capacity
to 300GB, the Cheetah 15K.5 also delivers 36
percent higher sequential performance. This
enables enterprises to meet their throughput
and capacity requirements with fewer drives,
significantly reducing total cost of ownership
(TCO). Seagate® designed the Cheetah 15K.5
for maximum reliability in demanding enterprise
applications, including a nonrecoverable error rate
that’s been improved by a factor of 10. Cheetah
15K.5 incorporates such Seagate-exclusive
features as IRAW (Idle Read After Write),
enhanced ECC (Error Correction Code) and BMS
(Background Media Scan) to safeguard data
integrity in the most rigorous environments.
the Seagate Advantage
- Fifth-generation Cheetah 15K is the fastest,
highest capacity and most reliable ever;
delivers lower TCO for a wide variety of
enterprise applications.
- Cheetah 15K.5 employs perpendicular
recording technology to deliver 300GB capacity with 30 percent faster sequential performance.
- Nonrecoverable error rate has been improved
by a factor of 10, safeguarding data integrity and reducing risk exposure during RAID rebuilds.
enabling New Opportunities
- Cheetah 15K.5 drives employ perpendicular
recording to enable systems with an unprecedented blend of storage performance, capacity and reliability.
- Cheetah 15K.5 drives offer lasting value,
ensuring systems can keep up with growing performance and capacity needs over a longer period of time.
- Cheetah 15K drives have the highest fieldproven
reliability of any 3.5-inch drives in the world, and boost system reliability even further due to the need for fewer drives.
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| Specifications |
300GB
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146.8GB
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73.4GB
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| Model Number |
ST3300655LW/LC/FC/SS
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ST3146855LW/LC/FC/SS
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ST373455LW/LC/FC/SS
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| Capacity |
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| Formatted 512 Kbytes/Sector (GB) |
300 |
146.8 |
73.4 |
| External Transfer Rate (Mbytes/sec) |
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Ultra320 SCSI |
320 |
320 |
320 |
4-Gbit/sec FibreChannel |
400 |
400 |
400 |
3-Gbit/sec Serial Attached SCSI |
300 |
300 |
300 |
| Performance |
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| Spindle Speed (RPM) |
15K |
15K |
15K |
| Average Latency (msec) |
2.0 |
2.0 |
2.0 |
Seek Time
Average Read/Write (msec) |
3.5/4.0 |
3.5/4.0 |
3.5/4.0 |
| Track-to-Track Read/Write (msec) |
0.2/0.4 |
0.2/0.4 |
0.2/0.4 |
Transfer Rate
Internal (Mbits/sec) |
960 to 1607 |
960 to 1607 |
960 to 1607 |
| Internal Formatted (Mbytes/sec) |
89 to 150 |
89 to 150 |
89 to 150 |
| Sustained (Mbytes/sec) |
73 to 125 |
73 to 125 |
73 to 125 |
| Cache, Multisegmented (Mbytes) |
16 |
16 |
16 |
| Configuration/Organization |
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| Discs |
4 |
2 |
1 |
| Heads |
8 |
4 |
2 |
Nonrecoverable Read Errors per
Bits Read |
1 sector per 10^16 |
1 sector per 10^16 |
1 sector per 10^16 |
| Annualized Failure Rate (AFR) (%) |
0.62 |
0.62 |
0.62 |
| Power Management |
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|
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| Typical (watts) SCSI |
17.6 |
14.2 |
13.6 |
| Fibre Channel |
18.8 |
16.5 |
14.7 |
| SAS |
17.4 |
14.9 |
13.7 |
| Power Idle (watts) SCSI |
12.5 |
9.6 |
8.1 |
| Fibre Channel |
13.7 |
10.7 |
9.2 |
| SAS |
13.2 |
11.2 |
8.4 |
| Environmental |
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| Temperature, Operating (°C) |
5 to 55 |
5 to 55 |
5 to 55 |
| Temperature, Nonoperating (°C) |
–40 to 70 |
–40 to 70 |
–40 to 70 |
| Shock, Operating: 2 msec (Gs) |
60 |
60 |
60 |
| Shock, Nonoperating: 2 msec (Gs) |
250 |
250 |
250 |
| Acoustics Idle (bels—sound power) |
3.6 |
3.4 |
3.2 |
| Vibration, Operating: <400 Hz (Gs) |
1.0 |
1.0 |
1.0 |
| Vibration, Nonoperating: <400 Hz (Gs) |
2.0 |
2.0 |
2.0 |
| Physical |
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| Height (in/mm) |
1.0/25.4 |
1.0/25.4 |
1.0/25.4 |
| Width (in/mm) |
4.0/101.6 |
4.0/101.6 |
4.0/101.6 |
| Depth (in/mm) |
5.75/146.05 |
5.75/146.05 |
5.75/146.05 |
| Weight (lb/kg) |
1.5/0.771 |
1.5/0.771 |
1.5/0.771 |
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