IBM DYLA-28100 Hard Drive Specifications - Page 17

Drive Characteristics

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3.0 Drive Characteristics This chapter provides the characteristics of the drives. 3.1 Logical Drive Format The customer usable data capacity is as shown below. Figure 3. Drive Parameter Descriptions Logical Head Number Logical Sectors/Track Logical Cylinder Number Logical Sector Size Total Customer Usable Data Sectors Total Customer Usable Data Bytes DYLA-26480 15 63 13328 512 12 594 960 6440 MB (6,448,619,520) DYLA-27900 15 63 16383 512 15 481 935 7920 MB (7,926,750,720) DYLA-28100 16 63 15880 512 16 007 040 8190 MB (8,195,604,480) 3.2 Data Sheet Figure 4. Data Sheet Media transfer rate [Mb/sec] Interface transfer rate [MB/sec] Data buffer size [ KB] Rotational speed [RPM] Average latency [msec] Recording density [Kbpi] Track density [TPI] Areal density [Gb/sq.in.] Number of zone Number of data disks Number of data heads Servo design method 64.3 - 100.4 33.3 MB/sec Max ( Ultra DMA Mode-2 ) 16.6 MB/sec Max ( PIO-4 ) 459 KB ( Read / Write ) 4900 6.1 221.8 Maximum 14,000 3.11 Maximum 8 5 8 / 10 Embedded sector servo © Copyright IBM Corp. 1997 9

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3.0
Drive Characteristics
This chapter provides the characteristics of the drives.
3.1
Logical Drive Format
The customer usable data capacity is as shown below.
3.2
Data Sheet
Figure 3. Drive Parameter
Descriptions
DYLA-26480
DYLA-27900
DYLA-28100
Logical Head Number
15
15
16
Logical Sectors/Track
63
63
63
Logical Cylinder Number
13328
16383
15880
Logical Sector Size
512
512
512
Total Customer Usable Data Sectors
12 594 960
15 481 935
16 007 040
Total Customer Usable Data Bytes
6440 MB
(6,448,619,520)
7920 MB
(7,926,750,720)
8190 MB
(8,195,604,480)
Figure 4. Data Sheet
Media transfer rate [Mb/sec]
64.3 - 100.4
Interface transfer rate [MB/sec]
33.3 MB/sec Max
( Ultra DMA Mode-2 )
16.6 MB/sec Max
( PIO-4 )
Data buffer size [KB]
459 KB
( Read / Write )
Rotational speed [RPM]
4900
Average latency
[msec]
6.1
Recording density [Kbpi]
221.8 Maximum
Track density [TPI]
14,000
Areal density [Gb/sq.in.]
3.11 Maximum
Number of zone
8
Number of data disks
5
Number of data heads
8 / 10
Servo design method
Embedded sector servo
Copyright IBM Corp. 1997
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