Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
_____________________________________________________________________________________
continued from previous page
ST11200 ST1980 ST1950 ST1830
Min. [4]* 2.90 3.05 TBD TBD MByte/sec
Avg. [4] 4.14 4.21
Max. [4] 5.07 5.07
Data Buffer To/From Disc Media
Data Transfer Rate (< 1 Track) - 512 Byte Sector
ST11200
Min. [4] 2.50 MByte/sec divided by (Interleave Factor)
Avg. [4] 3.55 MByte/sec divided by (Interleave Factor)
Max. [4] 4.36 Mbyte/sec divided by (Interleave Factor)
ST1980
Min. [4] 2.62 MByte/sec divided by (Interleave Factor)
Avg. [4] 3.61 MByte/sec divided by (Interleave Factor)
Max. [4] 4.36 MByte/sec divided by (Interleave Factor)
ST1950
Min. [4] TBD MByte/sec divided by (Interleave Factor)
Avg. [4] TBD MByte/sec divided by (Interleave Factor)
Max. [4] TBD Mbyte/sec divided by (Interleave Factor)
ST1830
Min. [4] TBD MByte/sec divided by (Interleave Factor)
Avg. [4] TBD MByte/sec divided by (Interleave Factor)
Max. [4] TBD MByte/sec divided by (Interleave Factor)
SCSI Interface Data
Transfer Rate (Asynchronous) [5]
ST11200 ST1980 ST1950 ST1830
-Maximum Instantaneous 5.0** 5.0 TBD TBD MBytes/sec**
-Maximum Average 3.1 3.1 TBD TBD MBytes/sec
Sector Sizes 512 user data blocks (default)
Variable (256 to 4096) in even sector sizes
If sector size (n, bytes) is odd it will be rounded down to n-1.
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 1 sector time (typical)
spare sectors per track or cylinder reallocation scheme.)
Flaw reallocation performance impact (For flaws reallocated using the spare 35 ms (typical)
tracks per volume reallocation scheme.)
Track skew incorporated at format time 1.7 ms
Cylinder skew incorporated at format time 3.0 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 5.0 Mb/s and no cable loss.
11
To Next Page