Seagate ST2000NM0054 ユーザーズマニュアル

Seagate Enterprise Capacity 3.5 HDD v4 SAS Product Manual, Rev. C

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This section provides detailed information concerning performance-related characteristics and features of Enterprise Capacity 3.5 HDD v4 
drives.

 
Drive capacity

6TB models

4TB models

2TB models

(formatted, rounded off value)

Read/write data heads

12

8

4

Bytes/track

1,470,464

Bytes (average, rounded off values)

Bytes/surface

500,000

MB (unformatted, rounded off values)

Tracks/surface (total)

337,400

Tracks (user accessible)

Tracks/in

320,000

TPI (average)

Peak bits/in

2,011,000

BPI 

Areal density

643

Gb/in

2

Internal data rate

2317

Mb/s (max)

Disk rotation speed

7200

RPM

Avg rotational latency

4.16

ms

Maximum (with verify)

1168.83

926.28

384.17

Maximum (without verify)

596.17

407.33

193.55

Maximum (with verify)

1185.62

791.38

393.65

Maximum (without verify)

597.35

411.48

200.73

Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to 
the Initiator (excluding connect/disconnect).

When changing sector sizes, the format times shown above may need to be increased by 30 minutes.

Minimum sector interleave

1 to 1

Maximum Internal data rate*

2.32 Gb/s

Sustained transfer rate

100 to 216 MiB/s **

SAS Interface maximum instantaneous transfer rate

1200MB/s* per port 

(dual port = 2400MB/s*)

Logical block sizes

512 (default), 520, 524 or 528.

Read/write consecutive sectors on a track

Yes

Flaw reallocation performance impact (for flaws reallocated at format time using the 

spare sectors per sparing zone reallocation scheme.)

Negligible

Average rotational latency

4.16ms

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or 

from the host.
** MiB/s x 1.048 = MB/s