Disc Thickness
Disc ThicknessDisc Thickness
Disc Thickness
0.05 in (1.2 mm)
Track Pitch
Track PitchTrack Pitch
Track Pitch
1.6 um (CD), 0.74 um (DVD)
Disc Center Hole
Disc Center HoleDisc Center Hole
Disc Center Hole
Diameter
DiameterDiameter
Diameter
0.6 in (15 mm)
Reference Scanning
Reference ScanningReference Scanning
Reference Scanning
Velocity
VelocityVelocity
Velocity
1.2 m/s (CD); 3.49 m/s (DVD SL); 3.84 m/s (DVD DL)
Read Only Disc Prameters
Read Only Disc PrametersRead Only Disc Prameters
Read Only Disc Prameters
Formats and Modes
Formats and ModesFormats and Modes
Formats and Modes
Supported
SupportedSupported
Supported
CD-ROM-Mode 1; CD-ROM XA-Mode 2 (forms
1 and 2); CD-Bridge; 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 double-layer); DVD-
R; DVD-RW; DVD-RW Multi-Border; DVD+R;
DVD+R Multi-Session , and DVD+RW
Capacity
CapacityCapacity
Capacity
180 MB (mode 2, 8 cm); 540 MB (mode 1, 12
cm); 650 MB (mode 2, 12 cm); 700 MB (Mode
2, 12 cm); 4.7 GB (DVD-5); 8.54 GB (DVD-9);
9.4 GB (DVD-10)
Block Size
Block SizeBlock 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 bytes; DVD-2,048
bytes
Writeable Disc
Writeable DiscWriteable Disc
Writeable Disc
Parameters
ParametersParameters
Parameters
Disc Type
Disc TypeDisc Type
Disc Type
CD-R and CD-RW
Write Methods
Write MethodsWrite Methods
Write Methods
Disc at Once, Track at Once, Session at Once,
Variable Packet, Fixed Packet
Format and Modes
Format and ModesFormat and Modes
Format and Modes
Supported
SupportedSupported
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; CD-Bridge; Video CD
Capacity
CapacityCapacity
Capacity
180 MB (mode 2, 8 cm); 540 MB (mode 1, 12
cm); 650 MB (mode 2, 12 cm); 700 MB (mode
2, 12 cm)
Block Size
Block SizeBlock Size
Block Size
CD-DA-2,352 bytes; mode 0- 2,336 and 2,352
bytes; mode 1-2,048 and 2,352 bytes; mode 2-
2,336 and 2,352; mode 2, form 1-2,048 and
2,352 bytes; mode 2, form 2-2,324 and 2,352
bytes
Access Times
Access TimesAccess Times
Access Times
(typical
reads, including settling)
Random DVD
Random DVDRandom DVD
Random DVD
< 140 ms (typical)
Random CD
Random CDRandom CD
Random CD
< 125 ms, (typical)
Full Stroke DVD
Full Stroke DVDFull Stroke DVD
Full Stroke DVD
< 250 ms (seek)
Full Stroke CD
Full Stroke CDFull Stroke CD
Full Stroke CD
< 210 ms (seek)
Maximum Data Transfer
Maximum Data TransferMaximum Data Transfer
Maximum Data Transfer
Rates
RatesRates
Rates
CD-R write
CD-R writeCD-R write
CD-R write
7200 KB/s (48X) Max
CD-RW write
CD-RW writeCD-RW write
CD-RW write
1500 KB/s (10X) Max
CD-ROM, CD-R,
CD-ROM, CD-R,CD-ROM, CD-R,
CD-ROM, CD-R,
CD-RW read
CD-RW readCD-RW read
CD-RW read
7200 KB/s (48X) Max
DVD ROM read
DVD ROM readDVD ROM read
DVD ROM read
21,632 KB/s (16X ) Max
Data Transfer Modes
Data Transfer ModesData Transfer Modes
Data Transfer Modes
ATA PIO mode 4 (16.7 MB/s); ATA Multi-word DMA mode 2 (16.7 MB/s);
ATA UltraDMA mode 0 (16.7 MB/s); ATA UltraDMA mode 1 (24 MB/s),
mode 2 (33 MB/s); ATA UltraDMA Mode 3; 44 Mbytes/s (default)
Cache Buffer
Cache BufferCache Buffer
Cache Buffer
2 MB (minimum)
QuickSpecs
HP Business Desktop d325 Series
HP Business Desktop d325 SeriesHP Business Desktop d325 Series
HP Business Desktop d325 Series
Technical Specifications - Optical Storage
DA - 11642 North America — Version 24 — August 23, 2005
Page 44
(32 pages)
(68 pages)
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