HP A7818-IE002 - Manual (Page 107)

Hardware Components
Mass Storage Devices
Chapter 5 107
IDE DVD-ROM Drive
Some models
1
have a DVD-ROM drive, which can play any standard audio CDs and
CD-ROMs, conforming to optical and mechanical standards as specified in the Red,
Yellow, Orange, and Green Books.
IDE CD-Writer Plus Drive
Some models
2
have a CD-RW drive in a 5.25-inch front-access shelf ATAPI, supporting
ATAPI commands and with audio playback capability. The drive can play any standard
audio CDs and CD-ROMs, and can record both write-once (CD-R) and CD-RW optical
media. It conforms to optical and mechanical standards as specified in the Red, Yellow,
Orange, and Green Books.
Interface ATAPI
Power requirements 5V, 1.2A
12V, 0.8A
1. Refer to the HP Workstation x2100 Service Handbook to determine which models
are installed with the DVD-ROM drive.
Description
Description
Data capacity 650MB
Data transfer rate Sustained transfer rate (1X=150KB/sec); Outerside:
7,200KB/sec
Burst transfer rate:
PIO mode 4 - 16.6MB/sec maximum
Single Word DMA Mode 2 - 8.3MB/sec maximum
Multi Word DMA Mode 2 - 16.6MB/sec maximum
Buffer memory size 128KB
Access time Average stroke (1 / 3) 110ms
Full stroke 180ms
Rotational speed 2,048 bytes (Mode 1)
2,336 bytes (Mode 2)
Interface ATAPI
Power requirements 5V, 1.2A
12V, 0.8A
2. Refer to the HP Workstation x2100 Service Handbook to determine which models
are installed with the HP CD-RW drive.
Description
Data capacity 650MB or up to 74 minutes of audio per disc
547MB in CD-UDF data format
Performance Typical: 110ms (random, 1/3 access including latency)
Maximum: 130ms (random, 1/3 access including latency)
Data transfer rate:
Read: Up to 32X (1X=150KB/sec)
Write: 12X (CD-R); 8X (CD-RW)
Burst transfer rate 16.67MB/sec