Seagate Hawk 2 ST11900N, Руководство по эксплуатации продукта

Страница: 18 / 82

10 Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. B
_________________________________________________________________________________________
5.3 Generalized performance characteristics
Minimum Sector Interleave 1 to 1
Data Buffer To/From Disc Media
Data transfer rate (< 1 sector) - 512 Byte Sector
Min. [4]* 3.35 MByte/sec
Avg. [4] 4.59 MByte/sec
Max. [4] 5.35 MByte/sec
Data Buffer To/From Disc Media
Data Transfer Rate (< 1 Track) - 512 Byte Sector
Min. [4] 2.88 MByte/sec divided by (Interleave Factor)
Avg. [4] 3.94 MByte/sec divided by (Interleave Factor)
Max. [4] 4.6 Mbyte/sec divided by (Interleave Factor)
SCSI Interface Data
Transfer Rate (Asynchronous) [5]
ST12400N/NC/ST11900N/NC ST12400ND/ST11900ND
-Maximum Instantaneous ** 5.2 MBytes/sec 3.3 MBytes/sec
-Maximum Average *** 3.1 MBytes/sec 2.4 MBytes/sec
Sector Sizes 512 user data blocks (default)
Variable (256 to 4096) in even sector sizes
Synchronous Transfer Rate
From 1.25 MByte/sec to 10.0 MBytes/sec (See section 11.5.)
Read/Write consecutive sectors on a track Yes
Flaw reallocation performance impact (For flaws reallocated using the spare Negligible
sectors per track reallocation scheme.)
Flaw reallocation performance impact (For flaws reallocated using the spare Negligible
sectors per cylinder reallocation scheme.)
Flaw reallocation performance impact (For flaws reallocated using the spare tracks 35 ms (typical)
per volume reallocation scheme.)
Overhead time for head switch (512 byte sectors) 1 ms
Overhead time for one track cylinder switch <3 ms Typical
Average rotational latency 5.54 ms
* [ ] All notes are listed in Section 5.3.1.
** Assumes system ability to support 5.2 Mb/s and no cable loss.
*** Assumes typical host delays and cable losses.