Dvd-Rom Drive - Compaq AP400 Maintenance And Service Manual

7-12 Physical and Operating Systems

DVD-ROM Drive

Disc
Applicable Disc Formats
Diameter (cm)
Capacity
Thickness
Track Pitch
Performance
Block Size (bytes)
Typical Access Time
Data Transfer Rate
Bus Rate
Cache/Buffer
Typical Start-up Time
Typical Stop Time
Error Rates
Reliability
Indicators
Table 7-9
DVD-ROM Drive
DVD (Single and Double layer)
CD-ROM (Mode 1 & 2)
CD-DA
CD-XA (Mode 2, Form 1 & 2)
CD-I (Mode 2, Form 1 & 2)
CD-I Ready, CD-Bridge, CD-R
PhoteCD (Single & Multi Session)
12 and 8
4.70 GB
8.54 GB
9.40 GB
550 MB (Mode 1, 12 cm)
640 MB (Mode 2, 12 cm)
180 MB (8 cm)
1.2 mm (CD-ROM, DVD)
1.6 m (CD-ROM)
0.74 m (DVD)
Mode 0: 2352
Mode 1: 2352, 2340, 2336, 2048
Mode 2: 2352, 2340, 2336, 2048
DVD: 2048
DVD: <180ms (random), <300 ms (full stroke)
CD: <120ms (random), <200 ms (full stroke)
150 kB/s (sustained, 1x CD-ROM mode)
1200-4800 kB/s (32x CAV CD-ROM mode)
2705-8115 kB/s (6x CAV DVD mode)
16.6 Mbytes/s (burst) with DMA support
512 kB minimum
<10 s
<3 s
-15
10 (soft error)
-20
10 (hard error)
-6
10 (seek error)
35,000 POH, 25% (MTBF)
30 minutes (MTTR)
>20,000 drawer in/out cycles
6
>5x10 full stroke seeks
Busy LED (amber or green)
Continued