Seagate ST9600205FC ユーザーズマニュアル
10
Savvio 10K.5 FC Product Manual, Rev. D
5.0
Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of Sav-
vio 10K.5 FC drives.
vio 10K.5 FC drives.
5.1
Internal drive characteristics
ST9900805FC
ST9600205FC
ST9450405FC
ST9300605FC
Drive capacity*
900
600
450
300
GBs (formatted
, rounded off value)
Read/write data heads
6
4
3
2
Tracks per inch
300,000
300,000
300,000
300,000
TPI
Peak bits per inch
1686
1686
1686
1686
kBPI
Areal density
506
506
506
506
Gb/in2
Internal data rate
1.00 to 1.91
1.00 to 1.91
1.00 to 1.91
1.00 to 1.91
Gb/s (ID to OD)
disk rotation speed
10K
10K
10K
10K
rpm
Avg rotational latency
3.0
3.0
3.0
3.0
ms
*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
5.2
Seek performance
See Section 10.5, "FC-AL physical interface" on page 68 and the Fibre Channel Interface Manual (part number
77767496) for additional timing details.
77767496) for additional timing details.
5.2.1
Access time
Not including controller overhead
2
(ms)
1
1.
Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation
as measured on a representative sample of drives.
as measured on a representative sample of drives.
,
Average
3.7
4.1
3.4
3.8
Single track
0.2
0.4
0.2
0.4
Full stroke
7.7
8.1
7.1
7.4
2.
Access to data = access time + latency time.
900GB models
600, 450 and 300GB models
Read
Write
Read
Write