Seagate Cheetah 73 ST173404LC, Руководство по эксплуатации продукта

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Cheetah 73 Product Manual, Rev. D 9
4.0 Performance characteristics
4.1 Internal drive characteristics (transparent to user)
4.2 SCSI performance characteristics (visible to user)
The values given in Section 4.2.1 apply to all models of the Cheetah 73 family unless otherwise specified.
Refer to Section 9.10 and to the SCSI Interface Product Manual for additional timing details.
4.2.1 Access time [5]
4.2.2 Format command execution time (minutes) [1]
4.2.3 Generalized performance characteristics
Data buffer transfer rate to/from disc media (one 512-byte sector):
SCSI interface data transfer rate (asynchronous):
Maximum instantaneous one byte wide 5.0 Mbytes/sec [4]
Maximum instantaneous two bytes wide 10.0 Mbytes/sec [4]
Synchronous formatted transfer rate Ultra2 SCSI Ultra160 SCSI
In low voltage differential (LVD) interface mode 5.0 to 80 Mbytes/sec 5.0 to 160 Mbytes/sec
ST173404
Drive capacity 73.4 GByte (formatted, rounded off values)
Read/write heads 24
Bytes/track 215,248 Bytes (average, rounded off values)
Bytes/surface 3,035 Mbytes (unformatted, rounded off values)
Tracks/surface (total) 14,100 Tracks (user accessible)
Tracks/inch 18,145 TPI
Peak bits/inch 334 KBPI
Internal data rate 280-427 Mbits/sec (variable with zone)
Disc rotational speed 10,033 r/min (+0.5%)
Average rotational latency 2.99 msec
Including controller overhead
(without disconnect) [1] [3] Not Including controller overhead
(without disconnect) [1] [3]
Drive level Drive level
Read Write Read Write
msec msec
Average – Typical [2] 6.05 6.55 5.85 6.35
Single Track – Typical [2] 0.8 1.1 0.6 0.9
Full Stroke – Typical [2] 14.2 15.2 14.0 15.0
ST173404
Maximum (with verify) 240
Maximum (no verify) 120
Minimum sector interleave 1 to 1
Min. [3]* 26.7 MByte/sec
Avg. [3] 33.0 MByte/sec
Max. [3] 40.2 MByte/sec