Seagate ST1000NM0001 Performance characteristics, Internal drive characteristics, Access time

Models: ST2000NM0001 ST1000NM0041 ST500NM0001 ST2000NM0021 ST1000NM0021 ST1000NM0001 ST500NM0041 ST500NM0021 ST2000NM0041

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5.0Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Con- stellation ES.1 drives.

5.1Internal drive characteristics

 

ST2000NM0001

ST1000NM0001

ST500NM0001

 

 

ST2000NM0021

ST1000NM0021

ST500NM0021

 

 

ST2000NM0041

ST1000NM0041

ST500NM0041

 

Drive capacity

2TB

1TB

500GB

(formatted, rounded off value)

Read/write data heads

8

4

2

 

Bytes per track

1,012,608

1,012,608

1,012,608

Bytes (average, rounded off values)

Bytes per surface

250,000

250,000

250,000

MB (unformatted, rounded off value)

Tracks per surface (total)

248,600

248,600

248,600

Tracks (user accessible)

Tracks per inch

237,000

237,000

237,000

TPI (average)

Peak bits per inch

1,523,000

1,523,000

1,523,000

BPI

Areal density

324

324

324

Gb/in2

Internal data rate

95 - 212

95 - 212

95 - 212

MB/s (variable with zone)

Disk rotation speed

7200

7200

7200

rpm

Avg rotational latency

4.16

4.16

4.16

ms

5.2Seek performance characteristics

See Section 12.4.1, "SAS physical interface" on page 66 and the SAS Interface Manual (part number 100293071) for additional timing details.

5.2.1Access time

 

 

Not including controller overhead1, 2 (ms)

Including controller overhead1, 2 (ms)

 

 

Read

Write

Read

Write

Average

Typical3,4

8.3

9.3

8.5

9.5

Single track

Typical3,4

0.5

0.8

0.7

1.0

Full stroke

Typical3,4

18

19

18.2

19.2

1.Execution time measured from receipt of the Command to the Response.

2.Assumes no errors and no sector has been relocated.

3.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

4.Access time = controller overhead + average seek time and applies to all data transfer commands. Access to data = access time + latency time.

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Constellation ES.1 SAS Product Manual, Rev. E

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Seagate ST1000NM0001 manual Performance characteristics, Internal drive characteristics, Seek performance characteristics

ST2000NM0001, ST1000NM0041, ST500NM0001, ST2000NM0021, ST1000NM0021 specifications

Seagate is a renowned leader in data storage solutions, offering a wide array of hard disk drives (HDDs) suitable for various applications. Among their product lineup, the Seagate ST2000NM0041, ST500NM0021, ST500NM0041, ST1000NM0001, and ST1000NM0021 stand out as reliable options tailored for enterprise environments and general storage needs.

The Seagate ST2000NM0041 is a 2TB 7200 RPM drive designed for high-performance workloads in data centers. One of its key features is the use of the SATA III interface, providing data transfer speeds of up to 6 Gbps, ensuring quick access to data. This model supports advanced error recovery controls and features enhanced power management capabilities, which contribute to its reliable performance and energy efficiency.

Next, the ST500NM0021 and ST500NM0041 are both 500GB drives that cater to different consumer needs. The ST500NM0021 is a 5400 RPM drive, typically used in scenarios where lower power consumption is vital, such as in compact systems or external storage configurations. Its efficient design enables quieter operation, making it ideal for environments that require minimal noise. Conversely, the ST500NM0041 operates at a speed of 7200 RPM, making it suitable for more demanding applications that require swift read and write speeds. Both models utilize Serial ATA for connectivity, ensuring compatibility with a wide range of systems.

The ST1000NM0001 and ST1000NM0021 are 1TB drives that provide versatility across different platforms. Similar to their 500GB counterparts, the ST1000NM0001 features a 7200 RPM speed, optimizing performance for applications requiring faster data processing. In contrast, the ST1000NM0021 operates at 5400 RPM, designed for users prioritizing energy efficiency over speed, like in desktop and external storage solutions. Each of these drives supports advanced technologies such as Native Command Queuing (NCQ), which enhances performance by allowing multiple commands to be executed simultaneously.

Overall, the Seagate ST series hard drives offer flexible storage options for a variety of applications. With their robust features, including varied RPM speeds, power management, and compatibility with SATA connections, these drives cater to the needs of both consumer and enterprise markets, establishing Seagate as a trusted provider in the storage arena.