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Revision status summary sheet
RevisionDateSheets Affected
Rev. A04/21/03All.
Rev. B05/07/03Pages 8, 34-36, 38, and 41-45
Rev. C07/17/03Pages 1, 4, 7, 12, and 13. Also new design and page size.
Rev. D09/02/03Page 20.
Rev. E12/01/03Page 18.
This manual describes the functional, mechanical and interface specifications for the following Seagate
Barracuda® 7200.7 model drives:
Barracuda 7200.7 Plus
• ST3160023A
• ST3120026A
• ST380013A
Barracuda 7200.7
• ST3160021A
• ST3120022A
• ST380011A
• ST360014A
• ST340014A
These drives provide the following key features:
• 7,200-RPM spindle speed and 2-Mbyte buffer (8 Mbytes on “Plus” models: ST3160023A, ST3120026A, and
ST380013A) combine for superior desktop performance.
• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.
• Giant magnetoresistive (GMR) recording heads and EPRML technology, which provide the drives with
increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• Quiet operation.
• 350 Gs nonoperating shock.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• The 3D Defense System™ , which includes Drive Defe nse, Data Defense, and Diag nostic Defense, offers
the industry’s most comprehensive protection for disc drives.
• 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).
®
Barracuda 7200.7 Product Manual, Rev. E1
2Barracuda 7200.7 Product Manual, Rev. E
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
ST3160021A, ST3160023A, ST3120022A, ST3120026A, ST380011A, ST380013A, ST360014A, and
ST340014A model drives.
2.1Specification summary table
The specificatio ns lis ted in th is table ar e for quick reference. F or details on specification me as ur eme nt o r de finition, see the appropriate section of this manual.
Drive specification
Formatted Gbytes (512 bytes/sector)160120806040
Guaranteed sectors312,581,808234,441,648156,301,488117,231,40878,165,360
Bytes per sector512
Default sectors per track63
Default read/write heads16
Default cylinders16,383
Physical read/write heads43221
Discs22111
Recording density, BPI (bits/inch max)595,000
Track density , TPI (tracks/inch max)94,600
Areal density, (Mbits/inch2 max)56.3
Spindle speed (RPM)7,200
Internal data transfer rate OD
Cache buffer
ST3160021A, ST3120022A, ST380011A,
ST360014A, and ST340014A
ST3160023A, ST3120026A, and
ST380013A
Height (mm max)26.035 mm (1.028 inches)
Width (mm max )101.6 mm (4.000 inches)
Length (mm max)146.99 mm (5.787 inches)
Weight (typical)635 grams (1.4 lb)
ST3160021A
ST3160023A
85.4
58
Multiword DMA modes 0–2
Ultra DMA modes 0–5
2 Mbytes (2,048 kbytes)
8 Mbytes (8,192 kbytes)
ST3120022A
ST3120026A
ST380011A
ST380013AST360014AST340014A
Barracuda 7200.7 Product Manual, Rev. E3
ST3160021A
Drive specification
Average latency (msec)4.16
Power-on to ready (sec typical)10 sec
Standby to ready (sec typical)10 sec
Startup current (typical) 12V (peak)2.8 amps
Track-to-track seek time (msec typical)<1.0 (read), <1.2 (write)
Average seek time (msec typical)
Average seek, read (msec typical)8.5
Average seek, write (msec typical)9.5
Seek power (typical)12.5 watts
Read/write power (typical)12.0 watts
Idle mode (typical)7.5 watts
Standby mode (typical)0.9 watts
Sleep mode (typical)0.9 watts
Voltage tolerance (including noise)
Ambient temperature0° to 60°C (operating)
Temperature gradient (°C per hour max)20°C (operating)
Relative humidity5% to 90% (operating)
Relative humidity gradient30% per hour max
Wet bulb temperature (°C max)33 (operating)
Altitude, operating–60.96 m to 3,048 m
Altitude, nonoperating (below mean sea
level, max)
Shock, operating (Gs max at 2 msec)63
Shock, nonoperating (Gs max at 2 msec)350 Gs
Vibration, operating1.0 G (0 to peak, 5–350 Hz)
Vibration, nonoperating5.0 Gs (0 to peak, 22–350 Hz)
Drive acoustics Sound power (bels)
ST3160023A
8.5
5V ± 5%
12V ± 10%
–40° to 70°C (nonoperating)
30°C (nonoperating)
5% to 95% (nonoperating)
40 (nonoperating)
(–200 ft to 10,000+ ft)
–60.96 m to 12,192 m
(–200 ft to 40,000+ ft)
ST3120022A
ST3120026A
ST380011A
ST380013AST360014AST340014A
Idle*<2.5 (typical)
Quiet seek2.8 (typical)
Performance seek3.4 (typical)
Nonrecoverable read errors1 per 10
Mean time between failures
(power-on hours)
Service life5 Years
Contact start-stop cycles
(25°C, 40% rel. humidity)
*During periods of drive idle, some o ffline activity may occur according to the S. M.A.R.T. specification, which may increase acoust ic and
When addressing these d rives in LBA mode, all bl ocks (sectors) are c onsecutively numbered fr om 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4. 1.2, "Id enti fy Dev i ce co mma nd" ( wor ds 60 -6 1 a nd 1 00- 10 3) for a ddi tio nal in for ma tio n ab out 48bit addressing support of drives with capacities over 137 Gbytes.
2.3Default logical geometry
CylindersRead/write headsSectors per track
16,3831663
2.4Physical organization
ModelRead/write headsNumber of discs
ST3160021A
ST3160023A
ST3120022A
ST3120026A
ST380011A
ST380013A
ST360014A21
ST340014A11
42
32
21
Barracuda 7200.7 Product Manual, Rev. E5
2.5Recording and interface technology
InterfaceATA
Recording method16/17 EPRML
Recording density BPI (bits/inch max)595,000
Track density TPI (tracks/inch max)94,600
Areal density (Mbits/inch2 max)56.3
Spindle speed (RPM) (± 0.2%)7,200
Internal data-transfer rate OD (Mbytes/sec max)85.4
Sustained data transfer rate OD (Mbytes/sec max)58
I/O data-transfer rate (Mbytes/sec max)100 (Ultra DMA mode 5)
Interleave1:1
Cache buffer
ST3160021A, ST3120022A, ST380011A, ST360014A, and ST340014A2 Mbytes (2,048 kbytes)
ST3160023A, ST3120026A, and ST380013A8 Mbytes (8,192 kbytes)
2.6Physical characteristics
Drive specification
Maximum height
Maximum width
Maximum lengt h
Typic al we ig ht
(mm)
(inches)
(mm)
(inches)
(mm)
(inches)
(grams)
(pounds)
26.035
1.028
101.6
4.00
146.99
5.787
635
1.4
6Barracuda 7200.7 Product Manual, Rev. E
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