Seagate ST33000650SS ユーザーズマニュアル

10

Constellation ES.2 SAS Product Manual, Rev. D

This section provides detailed information concerning performance-related characteristics and features of 
Constellation ES.2 drives.

 

 

Drive capacity

3

TB (formatted, rounded off value)

Read/write data heads

10

Bytes per track

1,419,776

Bytes (average, rounded off values)

Bytes per surface

300,000

MB (unformatted, rounded off value)

Tracks per surface (total)

284,399

Tracks (user accessible)

Tracks per inch

270,000

TPI (average)

Peak bits per inch

1,638,000

BPI

 

Areal density

444

Gb/in

2

Internal data rate

68.7 - 155

MB/s (variable with zone)

disk rotation speed

7200

rpm

Avg rotational latency

4.16

ms

See Section 12.4.1, "SAS physical interface" on page 55  and  the  SAS Interface Manual (part number 
100293071) for additional timing details.

1.

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

, 

Average

Typical

4

3

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.

8.3

9.3

8.5

9.5

Single track

Typical

3,4

0.5

0.5

0.7

0.7

Full stroke

Typical

3,4

15.5

16.2

15.7

16.4

2.

Assumes no errors and no sector has been relocated.

1, 2