Data Transfer Speed - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

3.3.4 Data Transfer Speed

Description
Disk-Buffer Transfer (Zone 0)
Instantaneous - typical
Sustained - typical
Disk-Buffer Transfer (Zone 7)
Instantaneous - typical
Sustained - typical
Buffer-Host (max)
Figure 11. Data Transfer Speed
Instantaneous Disk-Buffer Transfer Rate (Mbyte/sec) is derived by:
(Number of Sectors on a track) * 512 * (Revolution/sec)
Note: Number of sectors per track will vary because of the linear density recording.
Sustained Disk-Buffer Transfer Rate (Mbyte/sec) is defined by considering head/cylinder change time.
This gives a local average data transfer rate. It is derived by:
(Sustained Transfer Rate) =
A = (Number of Data Sectors per Cylinder) * 512
B = (# of Surface per cylinder) - 1) * (Head Switch Time)
C = (Cylinder Change Time)
D = (# of Surface) * (One Revolution Time)
Instantaneous Buffer-Host Transfer Rate (Mbyte/sec) defines the maximum data transfer rate on AT
Bus. It also depends on the speed of the host.
The measurement method is given in 3.3.5, "Throughput" on page 13.
12
O E M Specifications for DTTA-3xxxxx
DTTA-35xxxx
15.2 Mbyte/sec
33.3 Mbyte/sec
A/ ( B + C + D )
12 Mbyte/sec
8.3 Mbyte/sec
6 Mbyte/sec
DTTA-37xxxx
16.2 Mbyte/sec
13 Mbyte/sec
10.1 Mbyte/sec
8 Mbyte/sec
33.3 Mbyte/sec