Table of Contents
Advertisement
10
______________________________________________________________________________________
5.3
Generalized performance characteristics
Minimum Sector Interleave
Data Buffer To/From Disc Media
Data transfer rate (< 1 sector) - 512 Byte Sector
Min. [4]*
4.33 MByte/sec
Avg. [4]
6.15 MByte/sec
Max. [4]
7.63 MByte/sec
Data Buffer To/From Disc Media
Data Transfer Rate (< 1 Track) - 512 Byte Sector
Min. [4] 3.64 MByte/sec divided by (Interleave Factor)
Avg. [4] 5.16 MByte/sec divided by (Interleave Factor)
Max. [4] 6.41 Mbyte/sec divided by (Interleave Factor)
SCSI Interface Data
Transfer Rate (Asynchronous) [5]
-Maximum Instantaneous
-Maximum Average
Sector Sizes
512 user data blocks (default)
Variable (256 to 4096 bytes per sector) in even number of bytes per sector. If n (number of bytes
per sector) is odd, then n-1 will be used.
Synchronous Transfer Rate
From 1.25 MByte/sec to 10.0 MBytes/sec (See section 11.5.)
Read/Write consecutive sectors on a track
Flaw reallocation performance impact (For flaws reallocated using the spare
sectors per track reallocation scheme.) [10]
Flaw reallocation performance impact (For flaws reallocated using the spare
sectors per cylinder reallocation scheme.) [10]
Flaw reallocation performance impact (For flaws reallocated using the spare tracks
per volume reallocation scheme.)
Overhead time for head switch (512 byte sectors)
Overhead time for one track cylinder switch
Average rotational latency
*[ ] All notes are listed in Section 5.3.1.
Product Manual - Hawk 4 Family (Wide) SCSI-2 (Volume 1), Rev. E
1 to 1
W/WC
5.2 MBytes/sec [9]*
3.1 MBytes/sec [11]
WD/DC
3.3 MBytes/sec
2.4 MBytes/sec
Yes
Negligible
Negligible
35 ms (typical)
1 ms
<3 ms Typical
5.54 ms
Advertisement
Table of Contents
