Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate
Technology LLC in the United States and/or other countries. DiamondMax, MaxBlast, Maxtor
and the Maxtor logo 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 operating environment and formatting. Seagate
reserves the right to change, without notice, product offerings or specifications.
DiamondMax 21 Serial ATA Product Manual, Rev. Ciii
1.0Introduction
This manual describes the functional, mechanical and interface specifications for the following DiamondMax®
21 Serial ATA model drives:
STM3500630ASSTM3250824ASSTM3160815ASSTM380815AS
STM3320620ASSTM3250820ASSTM3160215ASSTM380215AS
STM3320820ASSTM3250310ASSTM340215AS
These drives provide the following key features:
• 7,200 RPM spindle speed.
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).
• Perpendicular recording, Tunneling Magnetoresistive (TMR) recording heads and EPRML technology, for
increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queueing with command ordering to increase performance in demanding applications.
• 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.
• Supports latching SATA cables and connectors.
DiamondMax 21 Serial ATA Product Manual, Rev. C1
1.1About the Serial ATA interface
The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary
advantages include:
• Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jumpers or other configuration options.
• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.
• Scalability to higher performance levels.
In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial
ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current
system and expect all of your existing applications to work as normal.
The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host
adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two
drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they
were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0
(master) devices.
Note.The host adapter may, optionally, emulate a master/slave environment to host software where two
devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and
Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a
master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA
environment.
The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide
backward compatibility with existing host systems and software. The Command and Control Block registers,
PIO and DMA data transfers, resets, and interrupts are all emulated.
The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized
AT Attachment” specification. The specification can be downloaded from www.serialata.org.
2DiamondMax 21 Serial ATA Product Manual, Rev. C
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:
STM3500630ASSTM3250824ASSTM3160815ASSTM380815AS
STM3320620ASSTM3250820ASSTM3160215ASSTM380215AS
STM3320820ASSTM3250310ASSTM340215AS
2.1Specification summary tables
The specifications listed in the following tables are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
DiamondMax 21 Serial ATA Product Manual, Rev. C3
Table 1: Drive specifications summary for 500 Gbyte models
Drive specificationSTM3500630AS
Formatted capacity (512 bytes/sector)*500 Gbytes
Guaranteed sectors976,773,168
Heads6
Discs3
Bytes per sector512
Default sectors per track63
Default read/write heads16
Default cylinders16,383
Recording density813 kbits/in max
Track density145 ktracks/in avg
Areal density114.4 Gbits/in2 avg
Spindle speed7,200 RPM
Internal data transfer rate1,030 Mbits/sec max
Sustained data transfer rate OD72 Mbytes/sec max
I/O data-transfer rate300 Mbytes/sec max
ATA data-transfer modes supportedPIO modes 0–4
Cache buffer16 Mbytes
Height (max)26.1 mm (1.028 inches)
Width (max)101.6 mm (4.000 inches) +/- 0.010 inches
Contact start-stop cycles50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the Serial ATA Revision 2.5 specificationYes
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 Gs
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
3.0 bels (max)
3.2 bels (max)
14
bits read
DiamondMax 21 Serial ATA Product Manual, Rev. C15
2.2Formatted capacity
Model
STM3500630AS500 Gbytes976,773,168512
STM3320620AS320 Gbytes625,142,448512
STM3320820AS320 Gbytes625,142,448512
STM3250824AS250 Gbytes488,397,168512
STM3250820AS250 Gbytes488,397,168512
STM3250310AS250 Gbytes488,397,168512
STM3160815AS160 Gbytes312,581,808512
STM3160215AS160 Gbytes312,581,808512
STM380815AS80 Gbytes156,301,488512
STM380215AS80 Gbytes156,301,488512
STM340215AS40 Gbytes78,165,360512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
Formatted
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 4.3.1, "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 logical geometry
CylindersRead/write headsSectors per track
16,3831663
LBA 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.
16DiamondMax 21 Serial ATA Product Manual, Rev. C
2.4Recording and interface technology
STM3320620AS
STM3500630AS
InterfaceSerial ATA (SATA)
Recording methodPerpendicular
Recording density (kbits/inch max)813781790.1813
Track density (ktracks/inch avg)145124.5145
Areal density (Gbits/inch2 avg)114 .497.96114.4
Spindle speed (RPM)7,200 ± 0.2%
Internal data transfer rate
(Mbits/sec max)
Sustained data transfer rate
(Mbytes/sec max)
1,030867.21,030
7276.672
STM3320820ASSTM3250824ASSTM3250820AS
I/O data-transfer rate
(Mbytes/sec max)
InterfaceSerial ATA (SATA)
Recording methodPerpendicular
Recording density (kbits/inch max)1,110824
Track density (ktracks/inch avg)160137.259
Areal density (Gbits/inch2 avg)176101
Spindle speed (RPM)7,200 ± 0.2%
Internal data transfer rate
(Mbits/sec max)
Sustained data transfer rate
(Mbytes/sec max)
I/O data-transfer rate
(Mbytes/sec max)
300
STM3160815AS, STM3160215AS,
STM3250310AS
1,303930
11078
300
STM380815AS, STM380215AS and STM340215AS
DiamondMax 21 Serial ATA Product Manual, Rev. C17
2.5Physical characteristics
Maximum height
STM3500630AS, STM3320620AS, STM3320820AS,
STM3250824AS and STM3250820AS
26.1 mm (1.028 inches)
STM3250310AS, STM3160815AS, STM3160215AS,
STM380815AS, STM380215AS and STM340215AS
Maximum width101.6 mm (4.000 +/- 0.010 inches)
Maximum length146.99 mm (5.787 inches)
Typical weight
STM3500630AS, STM3320620AS and STM3320820AS635 grams (1.4 lbs)
STM3250820AS600 grams (1.32 lbs)
STM3250824AS580 grams (1.28 lb.)
STM3250310AS368 grams (0.811 lbs)
STM3160815AS and STM3160215AS380 grams (0.838 lbs)
STM380815AS, STM380215AS and STM340215AS365 grams (0.805 lbs)
Cache buffer
STM3500630AS and STM3320620AS16 Mbytes (16,384 kbytes)
STM3320820AS, STM3250824AS, STM3250820AS, STM3250310AS,
STM3160815AS and STM380815AS
STM3160215AS, STM380215AS and STM340215AS2 Mbytes (2,048 kbytes)
19.99 mm (0.787 inches)
8 Mbytes (8,192 kbytes)
18DiamondMax 21 Serial ATA Product Manual, Rev. C
2.6Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using
drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between
random tracks, less overhead.
Note.These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted
values. However, due to the manner in which these drives are formatted, benchmark tests that
include command overhead or measure logical seeks may produce results that vary from these
specifications.
2.7Start/stop times
STM3250820AS
500-320 GB STM3250824AS
Power-on to Ready (sec)15 (max)11 (max)11 (max)7.9 (max)
Standby to Ready (sec)15 (max)11 (max)15 (max)7.9 (max)
STM3250310AS160 - 40 GB
Ready to spindle stop (sec)10 (max)12 (max)10 (max)10 (max)
2.8Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 30.
DiamondMax 21 Serial ATA Product Manual, Rev. C19
2.8.1Power consumption
Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on
an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient
temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in
a random track location.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and
does not execute a read or write operation. Servo electronics are active. Seek mode power represents the
worst-case power consumption, using only random seeks with read or write latency time. This mode is not
typical and is provided for worst-case information.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/
write electronics are in power-down mode.
Table 7: DC power requirements
STM3500630AS, STM3320620AS, STM3320820AS, STM3250820AS
STM3160815AS, STM3160215AS, STM380815AS, STM380215AS and STM340215AS
Power dissipationAvg (watts 25° C)Avg 5V typ ampsAvg 12V typ amps
Spinup——2.8 (peak)
Idle*9.300.6110.520
Seeking (random, 20% idle)12.600.6130.795
Standby and Sleep0.800.1060.023
STM3250310AS
Power dissipationAvg (watts 25° C)Avg 5V typ ampsAvg 12V typ amps
Spinup——2.0 (peak)
Idle*5.350.5280.226
Seeking (random, 20% idle)8.350.5730.458
Standby and Sleep1.800.0350.008
STM3250824AS
Power dissipationAvg (watts 25° C)Avg 5V typ ampsAvg 12V typ amps
Spinup——2.8 (peak)
Idle*7.750.5120.432
Seeking (random, 20% idle)11. 350.4970.738
Standby and Sleep1.240.2210.011
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
20DiamondMax 21 Serial ATA Product Manual, Rev. C
2.8.1.1Typical current profiles
Figure 1. Typical 5V startup and operation current profile
Figure 2. Typical 12V startup and operation current profile
2.8.2Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on
the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.8.3Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
DiamondMax 21 Serial ATA Product Manual, Rev. C21
2.8.4Power-management modes
The drive provides programmable power management to provide greater energy efficiency. In most systems,
you can control power management through the system setup program. The drive features the following
power-management modes:
Power modesHeadsSpindleBuffer
ActiveTrackingRotatingEnabled
IdleTrackingRotatingEnabled
Standby Parked StoppedEnabled
SleepParkedStoppedDisabled
• Active mode
The drive is in Active mode during the read/write and seek operations.
• Idle mode
The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc
access is necessary.
• Standby mode
The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set
the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for
a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In
Standby mode, thedrive buffer is enabled, the heads are parked and the spindle is at rest. The drive
accepts all commands and returns to Active mode any time disc access is necessary.
•Sleep mode
The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive
buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it
receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and
enters Standby mode with all current translation parameters intact.
• Idle and Standby timers
Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and
begins counting down from its specified delay times to zero. If the standby timer reaches zero before any
drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the
drive accepts all commands and returns to Active mode when disc access is necessary.
22DiamondMax 21 Serial ATA Product Manual, Rev. C
2.9Environmental specifications
2.9.1Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 69°C (156°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet
(3,048 meters).
Operating:0° to 60°C (32° to 140°F)
Nonoperating:–40° to 70°C (–40° to 158°F)
2.9.2Temperature gradient
Operating:20°C per hour (68°F per hour max), without condensation
Nonoperating:30°C per hour (86°F per hour max)
2.9.3Humidity
2.9.3.1Relative humidity
Operating:5% to 90% noncondensing (30% per hour max)
Nonoperating:5% to 95% noncondensing (30% per hour max)
STM3250824AS, STM3160815AS, STM3160215AS,
STM380815AS, STM380215AS and STM340215AS
37.7°C (99.9°F max)
40°C (104°F max)
2.9.4Altitude
Operating:–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating:–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
2.9.5Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1Operating shock
STM3500630AS, STM3320620AS, STM3320820AS, STM3250820AS, STM3160815AS,
STM3160215AS, STM380815AS, STM380215AS and STM340215AS
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 68 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
DiamondMax 21 Serial ATA Product Manual, Rev. C23
STM3250824AS and STM3250310AS
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 350 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
STM3500630AS
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 300 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
2.9.6Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the
drive mounting screws. Vibration may be applied in the X, Y or Z axis.
2.9.6.1Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified below.
5–22 Hz0.25 Gs (Limited displacement)
22–350 Hz0.50 Gs
350–500 Hz0.25 Gs
2.9.6.2Nonoperating vibration
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage
or degradation in performance when subsequently put into operation are specified below.
5–22 Hz0.25 Gs (limited displacement)
22–350 Hz5.0 Gs
350–500 Hz1.0 Gs
24DiamondMax 21 Serial ATA Product Manual, Rev. C
2.10Acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements are consistent with ISO document 7779. Sound power measurements are taken under essentially
free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined
by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Table 8: Fluid Dynamic Bearing (FDB) motor acoustics
Idle*Seek
STM3500630AS
STM3320620AS, STM3320820AS, and STM3250820AS
STM3250824AS
STM3250310AS
STM3160815AS, STM3160215AS, STM380815AS
STM380215AS and STM340215AS
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
**Measured in performance mode.
***Measured in quiet mode.
2.8 bels (typ)
3.0 bels (max)
2.5 bels (typ)
2.9 bels (max)
2.7 bels (typ)
2.9 bels (max)
2.6 bels (typ)
2.7 bels (max)
2.8 bels (typ)
3.0 bels (max)
3.7 bels (typ)**
3.9 bels (max)**
3.0 bels (typ)**
3.2 bels (max)**
3.4 bels (typ)**
3.6 bels (max)**
2.7 bels (typ)***
2.8 bels (max)***
3.0 bels (typ)***
3.2 bels (max)***
2.11Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 9: Radio frequency environments
TestDescriptionPerformance levelReference standard
2.12.1Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
The product shall achieve an Annualized Failure Rate (AFR) of 0.34% (MTBF of 0.7 million hours) when operated in an environment of ambient air temperatures of 25
tions in Section 2.9 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics
that are not relevant to individual units.
AFR and MTBF specifications are based on the following assumptions for desktop personal computer environments:
• 2400 power-on-hours per year.
• 10,000 average motor start/stop cycles per year.
• Operations at nominal voltages.
• Temperatures outside the specifications in Section 2.9 may reduce the product reliability.
• Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade
product reliability.
The desktop personal computer environment of power-on-hours, temperature, and I/O duty cycle affect the
product AFR and MTBF. The AFR and MTBF will be degraded if used in a enterprise application.
Nonrecoverable read errors1 per 1014 bits read, max
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Warranty3 years on distribution units.
Preventive maintenanceNone required.
°C. Operation at temperatures outside the specifica-
2.13Agency certification
2.13.1Safety certification
The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections
of IEC950 and EN 60950.
2.13.2Electromagnetic compatibility
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Electromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and
the immunity levels are defined by EN 55024.
Drives are tested in representative end-user systems. Although CE-marked drives comply with the directives
when used in the test systems, we cannot guarantee that all systems will comply with the directives. The drive
is designed for operation inside a properly designed enclosure, with properly shielded I/O cable (if necessary)
and terminators on all unused I/O ports. Computer manufacturers and system integrators should confirm EMC
compliance and provide CE marking for their products.
26DiamondMax 21 Serial ATA Product Manual, Rev. C
Korean RRL
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with paragraph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic
Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information
and Communication Republic of Korea.
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recognized lab.
• Family name: DiamondMax
• Certificate number: Pending
Australian C-Tick (N176)
If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548
1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communication Authority (ACA).
2.13.3FCC verification
These drives are intended to be contained solely within a personal computer or similar enclosure (not attached
as an external device). As such, each drive is considered to be a subassembly even when it is individually marketed to the customer. As a subassembly, no Federal Communications Commission verification or certification
of the device is required.
Seagate has tested this device in enclosures as described above to ensure that the total assembly (enclosure,
disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B computing device, pursuant to Subpart J, Part 15 of the FCC rules. Operation with noncertified assemblies is likely to result in interference to radio and television reception.
Radio and television interference. This equipment generates and uses radio frequency energy and if not
installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio
and television reception.
This equipment is designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment
does cause interference to radio or television, which can be determined by turning the equipment on and off,
you are encouraged to try one or more of the following corrective measures:
• Reorient the receiving antenna.
• Move the device to one side or the other of the radio or TV.
• Move the device farther away from the radio or TV.
• Plug the computer into a different outlet so that the receiver and computer are on different branch outlets.
If necessary, you should consult your dealer or an experienced radio/television technician for additional suggestions. You may find helpful the following booklet prepared by the Federal Communications Commission:
How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.
DiamondMax 21 Serial ATA Product Manual, Rev. C27
2.14Environmental protection
Maxtor designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
2.14.1European Union Restriction of Hazardous Substances (RoHS) Directive
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances. This drive is manufactured with components and materials that comply
with the RoHS Directive.
2.14.2China Restriction of Hazardous Substances (RoHS) Directive
2.14.2
This product has an Environmental Protection Use Period (EPUP) of 20 years. The following
table contains information mandated by China's "Marking Requirements for Control of Pollution
Caused by Electronic Information Products" Standard.
"O" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is lower
than the threshold defined by the China RoHS MCV Standard.
“O”
"X" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is over
the threshold defined by the China RoHS MCV Standard.
中国限制危险物品的指令
表示该部件(于同类物品程度上)所含的危险和有毒物质低于中国
RoHS MCV
标准所定义的门槛值。
“X”
表示该部件(于同类物品程度上)所含的危险和有毒物质超出中国
RoHS MCV
标准所定义的门槛值。
2.15Corrosive environment
Maxtor electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light
industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845.
However, this accelerated testing cannot duplicate every potential application environment. Users should use
caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals as
electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel
and gold films used in Maxtor products are especially sensitive to the presence of sulfide, chloride, and nitrate
contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be
exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an
ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulcanized rubber,
that can outgas corrosive compounds should be minimized or eliminated. The useful life of any electronic
equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.
28DiamondMax 21 Serial ATA Product Manual, Rev. C
3.0Configuring and mounting the drive
This section contains the specifications and instructions for configuring and mounting the drive.
3.1Handling and static-discharge precautions
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic discharge (ESD) hazards. Observe the following standard handling and static-discharge precautions:
Caution:
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal
chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire
installation procedure.
• Handle the drive by its edges or frame only.
• The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
• Always rest the drive on a padded, antistatic surface until you mount it in the computer.
• Do not touch the connector pins or the printed circuit board.
• Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids
the warranty. Some factory-installed labels contain information needed to service the drive. Other labels are
used to seal out dirt and contamination.
DiamondMax 21 Serial ATA Product Manual, Rev. C29
3.2Configuring the drive
Each drive on the Serial ATA interface connects point-to-point with the Serial ATA host adapter. There is no
master/slave relationship because each drive is considered a master in a point-to-point relationship. If two
drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they
were both “masters” on two separate ports. Both drives behave as if they are Device 0 (master) devices.
Serial ATA drives are designed for easy installation. It is usually not necessary to set any jumpers on the drive
for proper operation; however, if you connect the drive and receive a “drive not detected” error, your SATAequipped motherboard or host adapter may use a chipset that does not support SATA speed autonegotiation. If
you have a motherboard or host adapter that does not support autonegotiation:
• Install a jumper as shown in Figure 3 below to limit the data transfer rate to 1.5 Gbits per second (and leave
the drive connected to the SATA-equipped motherboard or host adapter that doesn’t support autonegotiation)
or
• Install a SATA host adapter that supports autonegotiation, leave the drive jumper block set to “Normal
operation” (see Figure
the drive to a 1.5 Gbits/sec transfer rate.
3.0 Gbits per second operation
Limit data transfer rate to
1.5 Gbits per second
3 below), and connect the drive to that adapter. This option has the benefit of not limiting
Jumper block
SATA interface connector
Figure 3. Serial ATA connectors
SATA power connector
3.3Serial ATA cables and connectors
The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connections. The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches). See Table 10
for connector pin definitions. Either end of the SATA signal cable can be attached to the drive or host.
For direct backplane connection, the drive connectors are inserted directly into the host receptacle. The drive
and the host receptacle incorporate features that enable the direct connection to be hot pluggable and blind
mateable.
For installations which require cables, you can connect the drive as illustrated in Figure 4.
Signal connector
Power connector
Signal cable
Power cable
Figure 4. Attaching SATA cabling
Each cable is keyed to ensure correct orientation. DiamondMax 21 drives support latching SATA connectors.
30DiamondMax 21 Serial ATA Product Manual, Rev. C
3.4Drive mounting
You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the
bottom-mounting holes. See Figure 5 for drive mounting dimensions. Follow these important mounting precautions when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• The screws should be inserted no more than 0.150 inch (3.81 mm) into the bottom or side mounting holes.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb).
Recommended
case temperature
measurement location
.250 + .015
(6.35 + .381)
(3x both sides)
1.122
+ .020
(28.499
+ .508)
[1]
5.787 (146.9898) max.
1.638
(41.605)
[1]
[1]
4.000
(101.6)
[1]
4.000
(101.60)
.138
(3.505)
.814
2.00
(50.80)
(20.676)
CLof conn. Datum B
CLof drive
[1]
2 x 3.750
(2 x 95.25)
1.028 max
(26.111 max)
2 x 1.625
(2 x 41.28)
2 x 1.750
(2 x 44.45)
[1]
Notes:
Dimensions are shown in inches (mm).
[1] Dimensions per SFF-8301 specification
[1]
[1]
4.000
(101.6)
[1]
Recommended
case temperature
measurement location
Figure 5. Drive dimensions for STM3500630AS, STM3250824AS, STM3250820AS and 320 GB models
DiamondMax 21 Serial ATA Product Manual, Rev. C31
Figure 6. Drive dimensions for 40-160 GB and STM3250310AS models
32DiamondMax 21 Serial ATA Product Manual, Rev. C
4.0Serial ATA (SATA) interface
These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA
programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6.
For detailed information about the Serial ATA interface, refer to the “Serial ATA: High Speed Serialized AT
Attachment” specification.
4.1Hot-Plug compatibility
DiamondMax 21 drives incorporate connectors which enable you to hot plug these drives in accordance with
the Serial ATA Revision 2.5 specification. This specification can be downloaded from www.serialata.org.
DiamondMax 21 Serial ATA Product Manual, Rev. C33
4.2Serial ATA device plug connector pin definitions
Table 10 summarizes the signals on the Serial ATA interface and power connectors..
Table 10: Serial ATA connector pin definitions
SegmentPinFunctionDefinition
S1Ground2nd mate
S2A+Differential signal pair A from Phy
S3A-
S4Ground2nd mate
S5B-Differential signal pair B from Phy
S6B+
Signal
S7Ground2nd mate
Key and spacing separate signal and power segments
P1V
P2V
P3V
33
33
33
3.3V power
3.3V power
3.3V power, pre-charge, 2nd mate
P4Ground1st mate
P5Ground2nd mate
P6Ground2nd mate
Power
P7V
P8V
P9V
5
5
5
5V power, pre-charge, 2nd mate
5V power
5V power
P10Ground2nd mate
P11Ground or LED signalIf grounded, drive does not use deferred spin
P12Ground1st mate.
P13V
P14V
P15V
12
12
12
12V power, pre-charge, 2nd mate
12V power
12V power
Notes:
1. All pins are in a single row, with a 1.27 mm (0.050”) pitch.
2. The comments on the mating sequence apply to the case of backplane blindmate connector only. In this
case, the mating sequences are:
• the ground pins P4 and P12.
• the pre-charge power pins and the other ground pins.
• the signal pins and the rest of the power pins.
3. There are three power pins for each voltage. One pin from each voltage is used for pre-charge when
installed in a blind-mate backplane configuration.
4. All used voltage pins (Vx) must be terminated.
34DiamondMax 21 Serial ATA Product Manual, Rev. C
4.3Supported ATA commands
The following table lists Serial ATA standard commands that the drive supports. For a detailed description of
the ATA commands, refer to the Serial ATA: High Speed Serialized AT Attachment specification. See
“S.M.A.R.T. commands” on page 42.for details and subcommands used in the S.M.A.R.T. implementation.
Table 11: Supported ATA commands
Command nameCommand code (in hex)
Check Power Mode98H or E5
Device Configuration Freeze LockB1H / C1
Device Configuration IdentifyB1H / C2
Device Configuration RestoreB1H / C0
Device Configuration SetB1H / C3
Device Reset08
Download Microcode92
Execute Device Diagnostics90
Flush CacheE7
Flush Cache ExtendedEA
Format Track50
Identify DeviceEC
H
H
H
H
H
H
H
Idle97H or E3
Idle Immediate95H or E1
Initialize Device Parameters91
Read BufferE4
Read DMA C8
Read DMA Extended25
Read DMA Without RetriesC9
Read Log Ext2F
Read MultipleC4
Read Multiple Extended29
Read Native Max AddressF8
Read Native Max Address Extended27
Read Sectors 20
Read Sectors Extended24
Read Sectors Without Retries21
Read Verify Sectors 40
Read Verify Sectors Extended42
Read Verify Sectors Without Retries41
Recalibrate10
Security Disable PasswordF6
Security Erase PrepareF3
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
DiamondMax 21 Serial ATA Product Manual, Rev. C35
Command nameCommand code (in hex)
Security Erase UnitF4
Security FreezeF5
Security Set PasswordF1
Security UnlockF2
Seek70
Set FeaturesEF
Set Max AddressF9
H
H
H
H
H
H
H
Note: Individual Set Max Address
commands are identified by the value
placed in the Set Max Features regis
-
ter as defined to the right.
Set Max Address Extended37
Set Multiple ModeC6
H
H
Sleep99H or E6
S.M.A.R.T. Disable OperationsB0H / D9
S.M.A.R.T. Enable/Disable AutosaveB0H / D2
S.M.A.R.T. Enable OperationsB0H / D8
S.M.A.R.T. Execute OfflineB0H / D4
S.M.A.R.T. Read Attribute ThresholdsB0H / D1
S.M.A.R.T. Read DataB0H / D0
S.M.A.R.T. Read Log SectorB0H / D5
S.M.A.R.T. Return StatusB0H / DA
S.M.A.R.T. Save Attribute ValuesB0H / D3
S.M.A.R.T. Write Log SectorB0H / D6
Standby96H or E2
Standby Immediate94H or E0
Write BufferE8
Write DMACA
Write DMA Extended35
Write DMA FUA ExtendedCD
Write DMA Without RetriesCB
Write Log Extended3F
Write MultipleC5
Write Multiple Extended39
Write Multiple FUA ExtendedCE
Write Sectors30
Write Sectors Without Retries31
Write Sectors Extended34
H
H
H
H
H
H
H
H
H
H
H
H
Address:
Password:
Unlock:
Freeze Lock:
H
H
H
H
H
H
H
H
H
H
H
H
H
Lock:
00
01
02
03
04
H
H
H
H
H
36DiamondMax 21 Serial ATA Product Manual, Rev. C
4.3.1Identify Device command
The Identify Device command (command code ECH) transfers information about the drive to the host following
power up. The data is organized as a single 512-byte block of data, whose contents are shown in Table 11 on
page 35. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or
vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
WordDescriptionValue
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
0C5A
• Bit 6: removable controller
• Bit 0: reserved
1Number of logical cylinders16,383
2ATA-reserved0000
3Number of logical heads16
4Retired0000
5Retired0000
6Number of logical sectors per logical track: 63003F
23–26Firmware revision (8 ASCII character string, padded with blanks to end
x.xx
of string)
27–46Drive model number: (40 ASCII characters, padded with blanks to end
MAXTOR STMxxxxx
of string)
H
H
H
H
H
H
H
H
H
47(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
8010
H
multiple (16)
48Reserved0000
49Standard Standby timer, IORDY supported and may be disabled2F00
50ATA-reserved0000
51PIO data-transfer cycle timing mode0200
52Retired0200
53Words 54–58, 64–70 and 88 are valid0007
54Number of current logical cylinders xxxx
55Number of current logical heads xxxx
56Number of current logical sectors per logical trackxxxx
57–58Current capacity in sectorsxxxx
59Number of sectors transferred during a Read Multiple or Write Multiple
xxxx
H
H
H
H
H
H
H
H
H
H
H
command
DiamondMax 21 Serial ATA Product Manual, Rev. C37
WordDescriptionValue
60–61Total number of user-addressable LBA sectors available
0FFFFFFFh*
(see Section 2.2 for related information)
*Note: The maximum value allowed in this field is: 0FFFFFFFh
(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137
Gbytes will have 0FFFFFFFh in this field and the actual number of
user-addressable LBAs specified in words 100-103. This is required
for drives that support the 48-bit addressing feature.
62Retired0000
63Multiword DMA active and modes supported (see note following this
xx07
table)
64Advanced PIO modes supported (modes 3 and 4 supported)0003
65Minimum multiword DMA transfer cycle time per word (120 nsec)0078
66Recommended multiword DMA transfer cycle time per word (120
0078
nsec)
67Minimum PIO cycle time without IORDY flow control (240 nsec)00F0
68Minimum PIO cycle time with IORDY flow control (120 nsec) 0078
69–74ATA-reserved0000
75Queue depth0000
76Serial ATA capabilitiesxxxx
77Reserved for future Serial ATA definitionxxxx
78Serial ATA features supportedxxxx
79Serial ATA features enabledxxxx
80Major version number003E
81Minor version number0000
82Command sets supported364B
83Command sets supported7C03
84Command sets support extension4003
85Command sets enabled30xx
86Command sets enabled0001
87Command sets enable extension4000
88Ultra DMA support and current mode (see note following this table)xx3F
89Security erase time0000
90Enhanced security erase time0000
92Master password revision codeFFFE
93Hardware reset value (see description following this table)xxxx
95–99ATA-reserved0000
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
38DiamondMax 21 Serial ATA Product Manual, Rev. C
WordDescriptionValue
100–
103
Total number of user-addressable LBA sectors available (see Section
2.2 for related information). These words are required for drives that
support the 48-bit addressing feature. Maximum value:
0000FFFFFFFFFFFFh.
Note.Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported
DiamondMax 21 Serial ATA Product Manual, Rev. C39
Note.See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data.
Description (if bit is set to 1)
BitWord 63
0Multiword DMA mode 0 is supported.
1Multiword DMA mode 1 is supported.
2Multiword DMA mode 2 is supported.
8Multiword DMA mode 0 is currently active.
9Multiword DMA mode 1 is currently active.
10Multiword DMA mode 2 is currently active.
BitWord 88
0Ultra DMA mode 0 is supported.
1Ultra DMA mode 1 is supported.
2Ultra DMA mode 2 is supported.
3Ultra DMA mode 3 is supported.
4Ultra DMA mode 4 is supported.
5Ultra DMA mode 5 is supported.
6Ultra DMA mode 6 is supported.
8Ultra DMA mode 0 is currently active.
9Ultra DMA mode 1 is currently active.
10Ultra DMA mode 2 is currently active.
11Ultra DMA mode 3 is currently active.
12Ultra DMA mode 4 is currently active.
13Ultra DMA mode 5 is currently active.
14Ultra DMA mode 6 is currently active.
40DiamondMax 21 Serial ATA Product Manual, Rev. C
4.3.2Set Features command
This command controls the implementation of various features that the drive supports. When the drive receives
this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an interrupt. If the value in the register does not represent a feature that the drive supports, the command is aborted.
Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the
Features register are defined as follows:
Table 12: Set Features command values
02
03
10
55
82
90
AA
F1
Enable write cache (default).
H
Set transfer mode (based on value in Sector Count register).
H
Sector Count register values:
00
Set PIO mode to default (PIO mode 2).
H
01HSet PIO mode to default and disable IORDY (PIO mode 2).
Note.At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
DiamondMax 21 Serial ATA Product Manual, Rev. C41
4.3.3S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines
that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable.
S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T.
commands and implementation, see the Draft ATA-5 Standard.
This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package that
supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the
drive uses.
Table 13: S.M.A.R.T. commands
Code in features registerS.M.A.R.T. command
D0
D2
D3
D4
D5
D6
D8
D9
DA
H
H
H
H
H
H
H
H
H
S.M.A.R.T. Read Data
S.M.A.R.T. Enable/Disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate (runs DST)
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Write Log Sector
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status
Note.If an appropriate code is not written to the Features Register, the command is aborted and 0x 04
(abort) is written to the Error register.
42DiamondMax 21 Serial ATA Product Manual, Rev. C
5.0Maxtor support services
Before contacting Maxtor Support, use the Hard Disk Information feature in MaxBlast to view the model number and serial number of your drive. These numbers can be used to get help from Maxtor Support, register
your drive, and look up information on the Maxtor website.
Please visit http://www.sea
•Warranty services
Drive returns, warranty status, and limited warranty statement.
•Product support
Installation tutorials, specifications, jumper settings, installation guides, and product manuals.
•Software downloads
Installation software, utilities, and diagnostics.
•Knowledge Base
Troubleshooting information, FAQs, and resolved problem database.
•Product Index
Current and legacy Maxtor products listing.
Click on Maxtor Product Support to access the Knowledge Base, download software updates, register your
drive, and get assistance via e-mail
gate.com/maxtor/ to obtain comprehensive support information, such as:
DiamondMax 21 Serial ATA Product Manual, Rev. C43
44DiamondMax 21 Serial ATA Product Manual, Rev. C
Index
A
ACA 27
acceleration 24
acoustics 25
Active 22
Active mode 22
actuator arm 20
AFR 26
Agency certification 26
altitude 23
Ambient temperature 23
ambient temperature 19, 20
Annualized Failure Rate 26
Annualized Failure Rate (AFR) 26
areal density 1, 17
ATA commands 35
Australia/New Zealand Standard AS/NZS3548 1995
27
Australian Communication Authority (ACA) 27
Australian C-Tick 27
Average latency 19
Average seek time 19
B
buffer 18
C
cables and connectors 30
cache 18
capacity 16
case temperature 23
CE mark 26
certification 26
Check Power Mode 35
China RoHS directive 28
compatibility 26
Conducted noise 21
Conducted RF immunity 25
Configuring the drive 29
connectors 30
Corrosive environment 28
CSA C22.2 (950) 26
cycles 26
Cylinders 16