Seagate ST15150N Product Manual - Page 24

General performance characteristics

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14 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 5.3 General performance characteristics Minimum sector interleave 1 to 1 Data buffer to/from disc media Data transfer rate (≤ 1 sector) Minimum Maximum 512-byte sector 5.30 Mbytes/sec* 8.94 Mbytes/sec* Data transfer rate (< 1 track) Minimum, divided by interleave factor Maximum, divided by interleave factor 3.56 Mbytes/sec 7.65 Mbytes/sec Sector sizes Default Variable in even-sector sizes 512-byte data blocks 180 to 4,096 bytes SCSI interface data Async. transfer rate, max instantaneous ST15150N/ND ST15150W/WD/WC/DC 5.0 Mbytes/sec*, ** 10.0 Mbytes/sec*, *** Synchronous transfer rate fast ST15150N/ND 0.5 to 10.0 Mbytes/sec Synchronous transfer rate wide ST15150W/WD/WC/DC 0.5 to 20.0 Mbytes/sec Read/write consecutive sectors on a track Yes Flaw reallocation performance impact (for flaws reallocated using the spare sectors per track reallocation scheme) Negligible Flaw reallocation performance impact (for flaws reallocated using the spare sectors per cylinder reallocation scheme) Negligible Flaw reallocation performance impact (for flaws reallocated using the spare tracks per volume reallocation scheme) 35 msec (typical) Overhead time for head switch 0.7 msec Overhead time for one track cylinder switch 1.6 msec (typical) Average rotational latency 4.17 msec * Rate measured from the start of the first sector transfer to or from the host. ** Assumes system ability to support 5.0 Mbytes/sec and no cable loss. *** Assumes system ability to support 10.0 Mbytes/sec and no cable loss.

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14
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
5.3
General performance characteristics
Minimum sector interleave
1 to 1
Data buffer to/from disc media
512-byte sector
Data transfer rate (
≤
1 sector)
Minimum
5.30 Mbytes/sec*
Maximum
8.94 Mbytes/sec*
Data transfer rate (< 1 track)
Minimum, divided by interleave factor
3.56 Mbytes/sec
Maximum, divided by interleave factor
7.65 Mbytes/sec
Sector sizes
Default
512-byte data blocks
Variable in even-sector sizes
180 to 4,096 bytes
SCSI interface data
Async. transfer rate, max instantaneous
ST15150N/ND
5.0 Mbytes/sec*, **
ST15150W/WD/WC/DC
10.0 Mbytes/sec*, ***
Synchronous transfer rate fast
ST15150N/ND
0.5 to 10.0 Mbytes/sec
Synchronous transfer rate wide
ST15150W/WD/WC/DC
0.5 to 20.0 Mbytes/sec
Read/write consecutive sectors on a track
Yes
Flaw reallocation performance impact
Negligible
(for flaws reallocated using the spare
sectors per track reallocation scheme)
Flaw reallocation performance impact
Negligible
(for flaws reallocated using the spare
sectors per cylinder reallocation scheme)
Flaw reallocation performance impact
35 msec (typical)
(for flaws reallocated using the spare
tracks per volume reallocation scheme)
Overhead time for head switch
0.7 msec
Overhead time for one track cylinder switch
1.6 msec (typical)
Average rotational latency
4.17 msec
*
Rate measured from the start of the first sector transfer to or from the host.
**
Assumes system ability to support 5.0 Mbytes/sec and no cable loss.
*** Assumes system ability to support 10.0 Mbytes/sec and no cable loss.