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1-4 C141-E145-02EN
1.2 Device Specifications
1.2.1 Specifications summary
Table 1.1 shows the specifications of the disk drives (MHR Series).
Table 1.1 Specifications (1/2)
MHR2040AT MHR2030AT MHR2020AT MHR2010AT
Format Capacity (*1) 40 GB 30 GB
20 GB 10 GB
Number of Heads 4 3
21
Number of Cylinders (User) 35,968
Number of Sectors (User) 78,140,160 58,605,120 39,070,080 19,640,880
Bytes per Sector 512
Recording Method 48/50 RLL
Track Density 2.42 K track/mm (61,500 TPI)
Bit Density 23.30 K bit/mm (592,000 BPI)
Rotational Speed 4,200 rpm ± 1%
Average Latency 7.14 ms
Positioning time (read and seek)
• Minimum (Track to Track)
• Average
• Maximum (Full)
1.5 ms (typ.)
Read: 12 ms (typ.)
22 ms (typ.)
Start time Typ.: 5 sec
Interface ATA-5 (Max. Cable length: 0.46 m)
(equipped with expansion function)
Data Transfer Rate
• To/From Media 18.4 to 32.5 MB/s
• To/From Host 100 MB/s Max.
(U-DMA mode 5)
Data Buffer Size 2 MB
Physical Dimensions
(Height × Width × Depth)
9.5 mm × 100.0 mm ×70.0 mm
Weight 99 g
*1: Capacity under the LBA mode.