Table 3:

146GB standard model DC power requirements

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

146GB standard model

146GB standard model

 

 

 

 

3.0 Gbit mode

6.0 Gbit mode

 

 

 

 

 

 

 

 

 

 

 

Notes

(Amps)

(Amps)

(Amps)

(Amps)

 

 

 

 

 

 

 

 

Voltage

 

 

 

+5V

+12V [2]

+5V

+12V [2]

 

 

 

 

 

 

 

 

Regulation

 

 

[5]

±5%

±5% [2]

±5%

±5% [2]

 

 

 

 

 

 

 

Avg idle current DC

 

[1] [7]

0.35

0.14

0.36

0.14

Maximum starting current

 

 

 

 

 

 

 

 

 

 

 

 

(peak DC) DC

3σ

[3]

0.52

1.18

0.53

1.19

(peak AC) AC

3σ

[3]

0.77

2.30

0.82

1.93

 

3σ

 

 

 

 

 

Delayed motor start (max) DC

[1] [4]

0.56

0.04

0.57

0.06

Peak operating current (random read):

 

 

 

 

 

 

 

 

 

 

 

 

Typical DC

 

[1] [6]

0.45

0.36

0.48

0.33

Maximum DC

3σ

[1]

0.48

0.36

0.52

0.33

Maximum (peak) DC

3σ

 

1.08

1.18

1.14

1.16

Peak operating current (random write)

 

 

 

 

 

 

Typical DC

 

 

0.50

0.26

0.53

0.24

Maximum DC

3σ

 

0.52

0.27

0.56

0.25

Maximum (peak) DC

3σ

 

0.98

1.18

1.06

1.18

Peak operating current (sequential read)

 

 

 

 

 

 

Typical DC

 

 

0.85

0.16

0.87

0.13

Maximum DC

3σ

 

0.88

0.16

0.92

0.14

Maximum (peak) DC

3σ

 

1.12

0.28

1.16

0.26

Peak operating current (sequential write)

 

 

 

 

 

 

Typical DC

 

 

0.80

0.16

0.83

0.13

Maximum DC

3σ

 

0.83

0.16

0.87

0.14

Maximum (peak) DC

3σ

 

1.00

0.30

1.06

0.28

 

 

 

 

 

 

 

 

[1]Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these val- ues. Power supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.

[2]For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 9,936 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.

[3]See +12V current profile in Figure 17.

[4]This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive.

[5]See paragraph 7.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response.

[6]Operating condition is defined as random 8 block reads.

[7]During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track.

Savvio 10K.3 SAS Product Manual, Rev. G

23

Page 30 Page 32
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Image 31
Seagate ST9300503SS, ST9300603SS, ST9300403SS, ST9146803SS, ST9146703SS, ST9146603SS manual
Page 30 Page 32

ST9146803SS, ST9300603SS, ST9300503SS, ST9146603SS, ST9146703SS specifications

Seagate has long been a key player in the storage technology industry, and its enterprise-class hard drives such as the ST9300503SS, ST9300403SS, ST9146603SS, ST9146803SS, and ST9146703SS stand out for their performance, reliability, and innovative features. Designed primarily for use in data centers and server environments, these drives offer a range of specifications suited for high-demand applications.

The Seagate ST9300503SS is a 300GB 2.5-inch SAS (Serial Attached SCSI) hard drive that operates at 10,000 RPM, which is essential for ensuring rapid data access. It provides a data transfer rate of 6 Gb/s and features Seagate's AgileArray technology, which enhances RAID performance and reliability by improving data integrity and optimizing power consumption. The drive is also designed to withstand the rigors of enterprise use, boasting a mean time between failures (MTBF) rating of 1.6 million hours.

In contrast, the ST9300403SS offers a similar 300GB capacity and speed, but with slight variations in features that make it better suited for specific applications. This drive also supports SAS 2.0 and includes features that enhance error recovery and data protection.

The ST9146603SS is another powerhouse, providing 146GB of storage. Operating at the same high spindle speed of 10,000 RPM, it is optimized for low-latency performance. This makes it highly suitable for transactional applications and environments where quick access to data is crucial. Like its counterparts, this drive is built with robust technologies that ensure reliable operation and enhanced data security.

The ST9146803SS bumps up the storage capacity to 300GB while maintaining the same impressive speed and performance features. Its incorporation of Seagate’s SeaTach technology allows for advanced communication protocols, which facilitate faster data transfers and lower latency.

Finally, the ST9146703SS also offers 146GB of storage and is known for its energy efficiency features that reduce operational costs in large-scale deployments. All these drives support a wide range of operating systems, making them versatile picks for businesses looking to upgrade their storage solutions.

Overall, the Seagate ST9300503SS, ST9300403SS, ST9146603SS, ST9146803SS, and ST9146703SS are essential components in any enterprise environment, delivering high performance, reliability, and advanced technology features that meet the critical demands of modern data storage.
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