August 2007
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC
in the United States and/or other countries. DB35 Series, SeaTools and SeaTDD are either trademarks or
registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States
and/or other countries. All other trademarks or registered trademarks are the property of their respective
owners.
One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity
may vary depending on oper ating envi ronme nt and for matting. Seagate reserves the right to chan ge, wi thout notice, product offerings or specifications.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• Quiet operation.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
• Support for autodetection of master/slave drives that use cable select (CSEL).
®
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DB35.3 Series PATA Product Manual, Rev. B
DB35.3 Series PATA Product Manual, Rev. B
3
2.0Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the
following drive models:
The specifications li sted in th e t abl e belo w are for qui ck ref eren ce. Fo r det ai ls on spe c ific ation m easur emen t or
definition, see the appropriate section of this manual.
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DB35.3 Series PATA Product Manual, Rev. B
Table 1: Drive specificati ons summary for 750, 500, and 400 Gbyte models
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During period s of driv e idle, some offline activity may occu r ac cor ding to th e S. M.A .R. T. spe cif icat ion, whi ch ma y in crease acoustic and
power to operational levels.
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
3.0 bels (max)
3.0 (max)
14
bits read
To determine the warranty for a specific drive, use a web browser to
access the following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. Y ou will be asked
to provide the drive serial number, model number (or part number) and
country of purchase. The system will display the warranty information for
your drive.
2.7 bels (typical)
2.9 bels (max)
2.8 (typical)
2.9 (max)
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DB35.3 Series PATA Product Manual, Rev. B
Table 2: Drive specificati o ns summary for 320, 300, and 250 Gbyte models
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During period s of driv e idle, some offline activity may occu r ac cor ding to th e S. M.A .R. T. spe cif icat ion, whi ch ma y in crease acoustic and
power to operational levels.
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
2.9 bels (max)
2.9 bels (max)
14
bits read
T o determine the warranty for a specific drive, use a web browser to access the
following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. You will be asked to
provide the drive serial number, model number (or part number) and country of
purchase. The system will display the warranty information for your drive.
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.
capacity*
Guaranteed
sectors Bytes per sector
2.2.1LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4.1.2, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes.
2.3Default logi cal geometry
CylindersRead/write headsSectors per track
16,3831663
DB35.3 Series PATA Product Manual, Rev. B
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2.4Record i n g an d i nt erface technol o gy
750GB500GB400GB320GB300GB250GB
InterfaceA TA
Recording methodPerpendicular
Recording density , KBPI (kbits/inch max)926813781813
Track density, KTPI (ktracks/inch avg)145
2
Areal density (Gbits/inch
Spindle speed (RPM) (± 0.2%)7,200
Internal data transfer rate (Mbits/sec max)1,030
Sustained data transfer rate (Mbytes/sec max)7872
I/O data-transfer rate (Mbytes/sec max)100 (Ultra DMA mode 5)
avg)128.2114.4
2.5Physical characteristics
Drive specification
Maximum he i g ht
(mm)
(inches)
26.1
1.028
Maximum wid th
Maximum length
Typical weight
ST3320820ACE, ST3300820ACE and ST3250820ACE