Seagate ST118202LC, Руководство по эксплуатации продукта

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Cheetah 18 Product Manual, Rev. B 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 18 family unless otherwise specified.
Refer to Section 9.10 and to the
SCSI Interface Product Manual , part number 77738479, 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 transfer rate for SCSI Fast-40 (Ultra2 SCSI):
In single-ended (SE) interface mode 5.0 to 40 Mbytes/sec
In low voltage differential (LVD) interface mode 5.0 to 80 Mbytes/sec
ST118202
Drive capacity 18.210 GByte (formatted, rounded off values)
Read/write heads 24
Bytes/track 104,840–159,008 Bytes (average, rounded off values)
Mbytes/surface 939 Mbytes (unformatted, rounded off values)
Tracks/surface (total) 6,962 Tracks (user accessible)
Tracks/inch 8,962 TPI
Peak bits/inch 183 KBPI
Internal data rate 152-231 Mbits/sec (variable with zone)
Disc rotational speed 10,025 r/min
Average rotational latency 2.99 msec
Including controller overhead
(without disconnect) [1] [3]
Drive level
Read Write
msec
Average – Typical [2] 6.0 6.8
Single Track – Typical [2] 0.8 1.1
Full Stroke – Typical [2] 12.2 13.2
ST118202
Maximum (with verify) <60
Maximum (no verify) <30
Minimum sector interleave 1 to 1
Min. [3]* 19.0 MByte/sec
Avg. [3] 23.95 MByte/sec
Max. [3] 28.9 MByte/sec