HP DL974B, Overview

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Drive Drive Drive Drive Manual tray-load
Orientation Orientation Orientation Orientation Horizontal or vertical
Interface Type Interface Type Interface Type Interface Type ATAPI
Dimensions-external Dimensions-external Dimensions-external Dimensions-external
(W x H x D) 5.23 x 0.5 x 5.46 in (132.8 x 12.7 x 138.8 mm)
Disc Diameter Disc Diameter Disc Diameter Disc Diameter 12 cm, 8 cm
Disc Thickness Disc Thickness Disc Thickness Disc Thickness 1.2 mm
Track Pitch Track Pitch Track Pitch Track Pitch 1.6 µm (CD-ROM); 0.74 m (DVD-ROM)
Disc Center Hole
Disc Center Hole Disc Center Hole
Disc Center Hole
Diameter
Diameter Diameter Diameter
15 mm
Reference Scanning Reference Scanning Reference Scanning Reference Scanning
Velocity
Velocity Velocity Velocity
1.2 m/s (CD); 3.49 m/s (DVD SL); 3.84 m/s (DVD DL)
Read Only Disc Read Only Disc Read Only Disc Read Only Disc
Parameters
Parameters Parameters Parameters
Formats and Modes Formats and Modes Formats and Modes Formats and Modes
Supported
Supported Supported Supported
CD-ROM – Mode 1; CD-ROM XA – Mode 2 (forms 1 and 2); CD digital
audio; CD Extra; CD-I – Mode 2 (forms 1 and 2) and CD-I-Ready; Photo
CD (single and multi-session); video CD; DVD (single and doublelayer);
DVD-R 3.95 GB; DVD-R 4.7 GB; DVD-RW 4.7 GB; DVD+R 4.7 GB ;
DVD+RW 4.7 GB
Capacity Capacity Capacity Capacity 180 MB (CD-ROM 8 cm); 550 MB (Mode 1, 12 cm); 630 MB (Mode 2, 12
cm); 650 MB (Mode 1, 12 cm); 700 MB (CD-ROM 80 min); 4.7 GB (DVD-
5); 8.54 GB (DVD-9); 9.4 GB (DVD-10)
Block Size
Block Size Block Size
Block Size Mode 1 – 2,048 and 2,352 bytes; mode 2, form 1 – 2,048; 2,328; 2,336;
2,340 and 2,352 bytes; mode 2, form 2 – 2,328; 2,336; 2,340 and 2,352
bytes; CD-DA – 2,352 and 2,368 bytes; DVD – 2,048 bytes
Writeable Disc Writeable Disc Writeable Disc Writeable Disc
Parameters
Parameters Parameters Parameters
Disc Type Disc Type Disc Type Disc Type CD-R and CD-RW
Write Methods Write Methods Write Methods Write Methods Disc at Once, Track at Once, Session at Once, Variable Packet, Fixed Packet
Format and Modes Format and Modes Format and Modes Format and Modes
Supported
Supported Supported Supported
CD-ROM (mode 1); CD-ROM XA (mode 2, forms 1 and 2); CD digital
audio, CD-I (mode 2, forms 1 and 2); video CD
Capacity Capacity Capacity Capacity 180 MB (CD-R 8 cm) ; 550 MB (Mode 1, 12 cm); 630 MB (Mode 2, 12
cm); 650 MB (Mode 1, 12 cm); 700 MB (CD-R 80 min)
Block Size Block Size Block Size Block Size Mode 1 – 2,048 bytes; mode 2, form 1 – 2,048 and 2,352 bytes; mode 2,
form 2 – 2,352 bytes; CD-DA – 2,353 bytes
Access Times Access Times Access Times Access Times (typical) Random DVD Random DVD Random DVD Random DVD < 130 ms
Random CD Random CD Random CD Random CD < 100 ms
Full Stroke DVD Full Stroke DVD Full Stroke DVD Full Stroke DVD < 225 ms
Full Stroke CD Full Stroke CD Full Stroke CD Full Stroke CD < 175 ms
Data Transfer Rates Data Transfer Rates Data Transfer Rates Data Transfer Rates Maximum – CD-R Write Maximum – CD-R Write Maximum – CD-R Write Maximum – CD-R Write 3600 KB/s (up to 24X CAV)
Sustained – CD-RW Write Sustained – CD-RW Write Sustained – CD-RW Write Sustained – CD-RW Write 3600 KB/s (up to 24X CAV)
Minimum – CD-R Read Minimum – CD-R Read Minimum – CD-R Read Minimum – CD-R Read 3600 KB/s (up to 24X CAV)
Minimum – CD-ROM Minimum – CD-ROM Minimum – CD-ROM Minimum – CD-ROM
Read
Read Read Read
3600 KB/s (up to 24X CAV)
Minimum – DVD-ROM Minimum – DVD-ROM Minimum – DVD-ROM Minimum – DVD-ROM
Read
Read Read Read
10800 KB/s (up to 8X CAV)
Minimum – Digital Audio Minimum – Digital Audio Minimum – Digital Audio Minimum – Digital Audio
Extraction
Extraction Extraction Extraction
1500 KB/s (up to 10X CLV)
Data Transfer Modes Data Transfer Modes Data Transfer Modes Data Transfer Modes ATA PIO mode 4 (16.7 MB/s); ATA Multi-word DMA mode 2 (16.7 MB/s)
Bus Rate Bus Rate Bus Rate Bus Rate 16.6 MB/s (burst) with DMA support
QuickSpecs
MultiBay 24X/24X/24X/8X CD-RW/DVD-ROM Combo MultiBay 24X/24X/24X/8X CD-RW/DVD-ROM Combo MultiBay 24X/24X/24X/8X CD-RW/DVD-ROM Combo MultiBay 24X/24X/24X/8X CD-RW/DVD-ROM Combo
Drive Drive Drive Drive
Technical Specifications
DA - 11479 North America — Version 9 — May 31, 2005 Page 3