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4.0
Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of
NL35 Series drives.
4.1
Internal drive characteristics
Drive capacity*
Read/write data heads
Bytes per track
Bytes per surface
Tracks per surface (total) 122,712 .................... 122,712.................... .................. Tracks (user accessible)
Tracks per inch
Peak bits per inch
Internal data rate
Disc rotation speed
Avg rotational latency
* One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on op-
erating environment and formatting.
4.2
Seek performance characteristics
4.2.1
Access time [4]
Average—Typical [2]
Single Track—Typical [2]
Full Stroke—Typical [2]
4.2.2
Format command execution time (in minutes)
Maximum (with verify)
Maximum (without verify)
NL35 Series FC Product Manual, Rev. D
ST3500071FC
ST3400071FC
500.0 ........................ 400.0........................ .................. Gbytes (formatted, rounded off value)
8 ............................... 8
686 ........................... 552........................... .................. Kbytes (average, rounded off values)
84.1 .......................... 67.7.......................... .................. Mbytes (unformatted, rounded off value)
120,000 .................... 120,000.................... .................. TPI
747 ........................... 597........................... .................. KBPI
411-794 .................... 322-669 .................... .................. Mbits/sec (variable with zone)
7,200 ........................ 7,200........................ .................. rpm (+ 0.5%)
4.17 .......................... 4.17.......................... .................. msec
Not including controller overhead
(without disconnect) [1]
Drive level
Read
Write
msec
8.5
9.5
0.8
1.0
16
16.5
ST3500071FC
375
170
ST3400071FC
360
155
11
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