IBM DTCA-24090 Hard Drive Specifications - Page 17

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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 DTCA-23240 16 63 6304 512 6 354 432 3240 MB (3,253,469,184) DTCA-24090 16 63 7944 512 8 007 552 4090 MB (4,099,866,624) 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 disks Number of heads Servo design method 51.7 - 83.4 33.3 MB/sec Max ( Ultra DMA Mode-2 ) 16.6 MB/sec Max ( PIO-4 ) 512 KB ( Read / Write ) 4000 7.5 211 Maximum 12,500 2.64 Maximum 12 3 5/6 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
DTCA-23240
DTCA-24090
Logical Head Number
16
16
Logical Sectors/Track
63
63
Logical Cylinder Number
6304
7944
Logical Sector Size
512
512
Total Customer Usable Data Sectors
6 354 432
8 007 552
Total Customer Usable Data Bytes
3240 MB
(3,253,469,184)
4090 MB
(4,099,866,624)
Figure 4. Data Sheet
Media transfer rate [Mb/sec]
51.7 - 83.4
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]
512 KB
( Read / Write )
Rotational speed [RPM]
4000
Average latency
[msec]
7.5
Recording density [Kbpi]
211 Maximum
Track density [TPI]
12,500
Areal density [Gb/sq.in.]
2.64 Maximum
Number of zone
12
Number of disks
3
Number of heads
5/6
Servo design method
Embedded sector servo
Copyright IBM Corp. 1997
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