6.3Power dissipation

ST973401SS in 3 Gbit operation

Typical power dissipation under idle conditions in 3Gb operation is 7.43 watts (25.35 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

 

ST973401SS DC CURRENT/POWER vs THROUGHPUT (3Gbit) Random 8 Block Reads

 

 

1.800

 

 

 

 

 

18.00

5Volt A

 

 

 

 

 

 

 

 

 

1.600

 

 

 

 

 

16.00

12 Volt A

 

 

 

 

 

 

Watts

 

 

 

 

 

 

 

 

 

1.400

 

 

 

 

 

14.00

 

 

1.200

 

 

 

 

 

12.00

Power (watts)

Amperes

1.000

 

 

 

 

 

10.00

0.800

 

 

 

 

 

8.00

0.600

 

 

 

 

 

6.00

 

 

 

 

 

 

 

 

0.400

 

 

 

 

 

4.00

 

 

0.200

 

 

 

 

 

2.00

 

 

0.000

 

 

 

 

 

0.00

 

 

0.0

50.0

100.0

150.0

200.0

250.0

300.0

 

 

 

 

 

I/Os per Second

 

 

 

 

Figure 6. ST973401SS (3 Gbit) DC current and power vs. input/output operations per second

ST973401SS in 1.5 Gbit operation

Typical power dissipation under idle conditions in 1.5 Gbit operation is 7.49 watts (25.56 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

 

ST973401SS DC CURRENT/POWER vs THROUGHPUT (3Gbit) Random 8 Block Reads

 

 

1.800

 

 

 

 

 

18.00

5Volt A

 

 

 

 

 

 

 

 

 

1.600

 

 

 

 

 

16.00

12 Volt A

 

 

 

 

 

 

Watts

 

 

 

 

 

 

 

 

 

1.400

 

 

 

 

 

14.00

 

 

1.200

 

 

 

 

 

12.00

Power (watts)

Amperes

1.000

 

 

 

 

 

10.00

0.800

 

 

 

 

 

8.00

0.600

 

 

 

 

 

6.00

 

 

 

 

 

 

 

 

0.400

 

 

 

 

 

4.00

 

 

0.200

 

 

 

 

 

2.00

 

 

0.000

 

 

 

 

 

0.00

 

 

0.0

50.0

100.0

150.0

200.0

250.0

300.0

 

 

 

 

 

I/Os per Second

 

 

 

 

Figure 7. ST973401SS (1.5 Gbit) DC current and power vs. input/output operations per second

30

Savvio SAS Product Manual, Rev. D

Page 36
Image 36
Seagate ST936701SS manual Power dissipation, ST973401SS in 3 Gbit operation, ST973401SS in 1.5 Gbit operation

ST936701SS, ST973401SS specifications

The Seagate ST936701SS and ST973401SS are high-performance enterprise hard drives designed for optimal data storage solutions in demanding environments. Both models belong to Seagate's Savvio series, which is renowned for its reliability and efficiency. These drives are tailored for critical applications such as database management, data warehousing, and online transaction processing.

The ST936701SS comes with a storage capacity of 36.4 GB, while the ST973401SS offers a larger capacity of 73.4 GB. This variance allows users to choose the drive that best suits their storage needs without compromising performance. Both drives utilize a 2.5-inch form factor, making them compact and suitable for high-density storage configurations.

A key feature of these drives is their impressive rotational speed of 10,000 RPM, which enhances data access times and improves overall system responsiveness. This speed allows for reduced latency and faster data transfer rates, critical for applications that require quick retrieval of large datasets.

In terms of technology, these drives utilize the Serial Attached SCSI (SAS) interface, which is favored in enterprise settings for its reliability and speed. SAS provides better performance than traditional SATA drives, particularly when dealing with high workloads, as it supports multiple concurrent connections and higher data throughput.

The ST936701SS and ST973401SS are also equipped with advanced features such as Seagate's Native Command Queuing (NCQ), which optimizes the order in which read and write commands are executed. This results in improved performance under multi-tasking conditions, essential for enterprise servers managing multiple requests simultaneously.

Additionally, both drives incorporate features aimed at enhancing data integrity and reliability. They support End-to-End Data Protection and are designed to endure the rigors of continuous operation, with MTBF (Mean Time Between Failures) ratings that bolster their reputation for durability.

Energy efficiency is another notable characteristic, as both drives are designed to reduce power consumption without sacrificing performance. This is particularly important in enterprise environments where power management contributes to lower operational costs.

In conclusion, the Seagate ST936701SS and ST973401SS drives are robust, reliable storage solutions tailored for enterprise applications. With their high performance, advanced technology features, and capacity options, they provide organizations with the scalability and efficiency required in today’s data-driven landscape. Whether it's for critical data management tasks or high-access applications, these drives stand out as a solid choice for any enterprise storage strategy.