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Cheetah NS 10K.2 FC Product Manual, Rev. B 11
4.0 Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of
Cheetah NS 10K.2 FC drives.
4.1 Internal drive characteristics
ST3600002FC ST3450802FC ST3
300602FC
Drive capacity* 600 450 300 Gbytes (formatted, rounded off value)
Read/write data heads 8 6 4
Tracks per inch 165,000
165,000 165,000 TPI
Peak bits per inch 1,347 1,347 1,347 kBPI
Areal density 225 225 225 Gbits/inch
2
Internal data rate 1.01 to 1.84 1.01 to 1.84 1.01 to 1.84 Gbits/sec (variable with zone)
disk rotation speed 10k 10k 10k rpm
Avg rotational latency 2.98 2.98 2.98 msec
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
4.2 Seek performance
See Section 9.5, "FC-AL physical interface" on page 64 and the Fibre Channel Interface Manual (part number
77767496) for additional timing details.
4.2.1 Access time
Not including controller overhead
2
(msec)
1
1. Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as
measured on a representative sample of drives.
,
Average Typ ica l 3.8 4.4
Single track Ty pi cal 0.22 0.22
Full stroke Typ ica l 8.1 8.7
2. Access to data = access time + latency time.
Read Write