3.0 Drive Characteristics
This chapter provides the characteristics of the drive.
3.1 Formatted Capacity
Figure 1. Formatted Capacity
3.2 Data Sheet
Description DDRS-39130 DDRS-34560
Label Capacity (MB) 9130 4560
Bytes per Sector 512 512
Sectors per Track 165-264 165-264
Number of heads 10 5
Number of disks 5 3
Number of LBAs 17,850,000 8,925,000
Total Logical Data Bytes 9,139,200,000 4,569,600,000
Figure 2. Data Sheet
Buffer to/from media [Mbit/sec] 109 to 171
Host to/from buffer ( Interface transfer rate )
[Mbyte/sec]
20 (50-pin FAST-20)
40 (68/80-pin FAST-20 WIDE)
| 80 (68/80-pin FAST-40 WIDE)
Data buffer size 384 Kbyte
Number of buffer segments 6 x 64 Kbyte
3 x 128 Kbyte
Rotational speed [RPM] 7200
Recording density [Kbpi] 134 (Ave) / 156 (Max)
Track density [TPI] 10000
Areal density [Mb/sq.in.] 1560 (Max)
Data zone 8
Copyright IBM Corp. 1997 9
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