12.4.2Physical characteristics

This section defines physical interface connector.

12.4.3Connector requirements

Contact your preferred connector manufacturer for mating part information. Part numbers for SAS connectors will be provided in a future revision of this publication when production parts are available from major connec- tor manufacturers.

The SAS device connector is illustrated in Figures 17 and 18.

12.4.4Electrical description

SAS drives use the device connector for:

DC power

SAS interface

Activity LED

This connector is designed to either plug directly into a backpanel or accept cables.

12.4.5Pin descriptions

This section provides a pin-out of the SAS device and a description of the functions provided by the pins.

Table 15: SAS pin descriptions

Pin

Signal name

Signal type

 

 

 

 

 

 

S1

Port A Ground

 

 

 

 

S2*

+Port A_in

Diff. input pair

 

 

 

S3*

-Port A_in

 

 

 

 

S4

Port A Ground

 

 

 

 

S5*

-Port A_out

Diff output pair

 

 

 

S6*

+Port A_out

 

 

 

 

S7

Port A Ground

 

 

 

 

S8

Port B Ground

 

 

 

 

S9*

+Port B_in

Diff. input pair

 

 

 

S10*

-Port B_in

 

 

 

 

S11

Port A Ground

 

 

 

 

S12*

-Port B_out

Diff output pair

 

 

 

S13*

+Port B_out

 

 

 

 

S14

Port B Ground

 

 

 

 

 

 

 

*- Short pin to support hot plugging NC - No connection in the drive.

Pin

Signal name

Signal type

 

 

 

 

 

 

P1*

NC (reserved 3.3Volts)

 

 

 

 

P2*

NC (reserved 3.3Volts)

 

 

 

 

P3

NC (reserved 3.3Volts)

 

 

 

 

P4

Ground

 

 

 

 

P5

Ground

 

 

 

 

P6

Ground

 

 

 

 

P7

5 Volts charge

 

 

 

 

P8*

5 Volts

 

 

 

 

P9*

5 Volts

 

 

 

 

P10

Ground

 

 

 

 

P11*

Ready LED

Open collector out

 

 

 

P12

Ground

 

 

 

 

P13

12 Volts charge

 

 

 

 

P14*

12 Volts

 

 

 

 

P15*

12 Volts

 

 

 

 

68

Constellation ES Series SAS Product Manual, Rev. E

Page 76
Image 76
Seagate ST32000445SS manual Physical characteristics, Connector requirements, Electrical description, Pin descriptions

ST3500414SS, ST3500415SS, ST32000445SS, ST31000425SS, ST32000446SS specifications

Seagate, a leader in data storage solutions, has introduced a range of high-capacity and reliable hard drives designed for enterprise environments, including the Seagate ST31000424SS, ST3500416SS, ST31000426SS, ST32000444SS, and ST32000446SS. Each of these models is built with an emphasis on performance, endurance, and advanced data protection technologies, catering to mission-critical applications and data-intensive workloads.

The ST31000424SS is a 1TB drive designed for servers and data centers. It offers a 7,200 RPM spindle speed and a 6 Gb/s SATA interface, ensuring quick data access and transfer rates. With a 64MB cache buffer, the ST31000424SS provides enhanced read/write performance, making it suitable for applications that demand quick responses from the storage subsystem.

Similarly, the ST3500416SS is a high-capacity 500GB model, also spinning at 7,200 RPM with a 6 Gb/s SATA interface. This drive is ideal for mid-range servers and enterprise storage, providing an excellent balance of performance and capacity for users looking to optimize their storage efficiency while maintaining lower power consumption.

The ST31000426SS expands the capacity to 1TB while retaining the same reliability and performance characteristics as its counterparts. Its robust design ensures reliability in multi-drive environments, making it an appealing choice for virtualization and database applications, where performance is critical.

The ST32000444SS and ST32000446SS represent Seagate's commitment to higher capacities, with both offering 2TB of storage. They both feature 7,200 RPM speeds, 6 Gb/s SATA interfaces, and 64MB cache buffers, catering to high-demand environments such as cloud storage and data analytics. The drives also integrate advanced error recovery and data integrity features, ensuring the protection of sensitive data, which is vital for enterprise users.

Each model supports Seagate's PowerChoice technology, which optimizes power consumption without sacrificing performance, enhancing energy efficiency in modern data centers. With a broad range of capacities and performance levels, these Seagate drives provide scalable solutions tailored to meet the robust demands of today’s enterprise applications, ensuring reliability and performance for critical data operations.