Seagate Cheetah 36LP ST318304FC, Руководство по эксплуатации продукта

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Cheetah 36LP FC Product Manual, Rev. C 9
4.0 Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of
Cheetah 36LP FC drives.
4.1 Internal drive characteristics
ST336704FC/FCV ST318304FC/FCV
Drive capacity 36.7 .......................... 18.35................................ Gbytes (formatted, rounded off value)
Read/write data heads 12 ............................. 6
Bytes per track 215,248 .................... 215,248............................ Bytes (average, rounded off values)
Bytes per surface 3,035 ........................ 3,035................................ Mbytes (unformatted, rounded off value)
Tracks per surface (total) 14,100 ...................... 14,100.............................. Tracks (user accessible)
Tracks per inch 18,145 ...................... 18,145.............................. TPI
Peak bits per inch 334 ........................... 334................................... KBPI
Internal data rate 280-427 .................... 280-427............................ Mbits/sec (variable with zone)
Disc rotation speed 10,025 ...................... 10,025.............................. rpm (+ 0.5%)
Avg rotational latency 2.99 .......................... 2.99.................................. msec
4.2 Seek performance characteristics
4.2.1 Access time
4.2.2 Format command execution time for
≥
512-byte sectors
Including controller overhead
(without disconnect)
1
,
2
(msec)
1. Execution time measured from receipt of the FCP Command to the FCP Response.
2. Assumes no errors and no sector has been relocated.
Not including controller overhead
(without disconnect)
1,2
(msec)
Read Write Read Write
Average Typical
3
,
4
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 ov average seek time.
Access to data = controller ov average seek time + latency time.
5.4 6.2 5.2 6.0
Single track Typical
3,4
0.8 1.1 0.6 0.9
Full stroke Typical
3,4
11.2 11.9 11.0 11.7
ST336704FC/FCV ST318304FC/FCV
Maximum (with verify) 120 minutes 60
Maximum (without verify) 60 minutes 30