Seagate Barracuda 36ES ST318417N, Руководство по эксплуатации продукта

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Barracuda 36ES Product Manual, Rev. H 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 Barracuda 36ES family unless otherwise specified.
Refer to Section 9.10 and to the
SCSI Interface Product Manual
, part number 75789509, 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 single-ended (SE) interface mode 5.0 to 40 Mbytes/sec 5.0 to 80 Mbytes/sec
In low voltage differential (LVD) interface mode 5.0 to 80 Mbytes/sec 5.0 to 160 Mbytes/sec
ST336737 ST318437 ST318417
Drive capacity 36.954 18.400 18.400 Gbytes (formatted, rounded off)
Read/write heads 4 2 2
Bytes/track 384 384 384 KBytes (average, rounded off)
Bytes/surface 9,176 9,176 9,176 Mbytes (unformatted, rounded off)
Tracks/surface (total) 29,850 29,850 29,850 Tracks (user accessible)
Tracks/inch 32,197 32,197 32,197 TPI
Peak bits/inch 490.9 490.9 490.9 KBPI
Internal data rate 308-498 308-498 308-498 Mbits/sec (variable with zone)
Disc rotational speed 7,200 7,200 7,200 r/min (+0.5%)
Average rotational latency 4.17 4.17 4.17 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] 8.7 9.3 8.5 9.1
Single Track – Typical [2] 0.6 0.7 0.4 0.5
Full Stroke – Typical [2] 15.1 15.7 14.9 15.5
ST336737 ST318437 ST318417
Maximum (with verify) 36.5 18.5 18.5
Maximum (no verify) 18.5 9.5 9.5
Minimum sector interleave 1 to 1
Min. [3]* 28.1 Mbytes/sec
Avg. [3] 42.0 Mbytes/sec
Max. [3] 50.7 Mbytes/sec