Seagate ST9146652SS ユーザーズマニュアル

10

Savvio 15K.2 SAS Product Manual, Rev. F

This section provides detailed information concerning performance-related characteristics and features of Sav-
vio drives.

 

 

Drive capacity

146.8

73.4

Gbytes (formatted, rounded off value)

Read/write data heads

4

2

Tracks per surface (total)

60,436

60,436

Tracks (user accessible including spare tracks)

Tracks per inch

180,000

180,000

kTPI (average)

Peak bits per inch

1,317

1,317

kBPI

 

Areal density

237.1

237.1

Gbit/in

2

Internal data rate

1,936 - 1,409

1,936 - 1,409

Mbits/sec (variable with zone)

Disk rotation speed

15k

15k

rpm

Avg rotational latency

2.0

2.0

msec

See Section 12.4.1, "SAS physical interface" on page 58  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.

3.1

3.5

2.9

3.3

Single track

Typical

3,4

0.2

0.42

0.2

0.42

Full stroke

Typical

3,4

5.05

5.4

4.85

5.2

2.

Assumes no errors and no sector has been relocated.

1, 2