Cheetah 15K.
Cheetah 15K.
©2004, 2005 Seagate Technology LLC All rights reserved Publication number: 100350601, Rev. B May 2005 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. Cheetah, SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications.
Revision status summary sheet Revision Rev. A Rev. B Date 11/22/04 05/04/05 Sheets Affected All. Pages 11, 37, 58, and 59.
Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Standards, compliance and reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4.
List of Figures Figure 1. Cheetah 15K.4 SAS disc drive 1 Figure 2. Typical ST3146854SS drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Figure 3. Typical ST3146854SS drive +5V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Figure 4. Typical ST373454SS drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1.0 Scope This manual describes Seagate Technology® LLC, Cheetah® SAS (Serial Attached SCSI) disc drives. Cheetah drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate SAS drives. Figure 1. Cheetah 15K.4 SAS disc drive Cheetah 15K.4 SAS Product Manual, Rev.
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2.0 Standards, compliance and reference documents The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends on its host equipment to provide adequate power and environment for optimum performance and compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation.
2.2 Compliance 2.2.1 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include: • • • • • • • Typical current use microprocessor 3.
2.3 Reference documents Cheetah 15K.4 SAS Installation Guide Seagate part number: 100350602 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-8323 SFF-8460 SFF-8470 SFF-8482 ANSI INCITS.xxx ISO/IEC 14776-xxx ISO/IEC 14776-xxx ISO/IEC 14776-xxx 3.
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3.0 General description Cheetah drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Serial Attached SCSI (SAS) interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
3.1 Standard features Cheetah drives have the following standard features: • • • • • • • • • • • • • • • • • • • • • • • • • • • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface Integrated dual port SAS controller supporting the SCSI protocol Support for SAS expanders and fanout adapters Firmware downloadable using the SAS interface 64 - deep task set (queue) Supports up to 32 initiators Jumperless configuration.
3.4 • • • • • Reliability Annualized Failure Rate (AFR) of 0.62% LSI circuitry Balanced low mass rotary voice coil actuator Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) 5-year warranty 3.5 Formatted capacities Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes.
3.8 Factory-installed options You may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options): • Other capacities can be ordered depending on sparing scheme and sector size requested. • Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit damage.
4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Internal data rate Disc rotation speed Avg rotational latency 4.2 ST3146854SS 146.8 8 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST373454SS 73.
4.2.2 Format command execution time (minutes) ST3146854SS ST373454SS ST336754SS Maximum (with verify) 90 60 30 Maximum (without verify) 45 30 15 4.2.
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 30 seconds (maximum) from removal of DC power. There is no power control switch on the drive. 4.
During a prefetch, the drive crosses a cylinder boundary to fetch data only if the Discontinuity (DISC) bit is set to 1 in bit 4 of byte 2 of the Mode Select parameters page 08h. Default is zero for bit 4. Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The wrap-around capability of the individual segments greatly enhances the cache’s overall performance, allowing a wide range of user-selectable configurations.
During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters page 08h, byte 2, bit 4 is set to 1 (Discontinuity--DISC bit). When prefetch (read look-ahead) is enabled (enabled by DRA = 0), it operates under the control of ARLA (Adaptive Read Look-Ahead).
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5.0 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints. Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: Annualized Failure Rate (AFR): Service Life Preventive maintenance: 1.
5.1.3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are specified at Less than 10 errors in 108 seeks.
Note. It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from the drive carrier prior to inserting it into the system. Caution. 5.2.4 The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure data integrity. S.M.A.R.T. S.M.A.R.T.
Reporting control Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to the reporting method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and power cycles. Determining rate S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to an unacceptable level.
be used to set this trip point. The default value for this drive is 65°C, however, you can set it to any value in the range of 0 to 65°C. If you specify a temperature greater than 65°C in this field, the temperature is rounded down to 65°C. A sense code is sent to the host to indicate the rounding of the parameter field. Table 1: Temperature Log Page (0Dh) Parameter Code Description 0000h Primary Temperature 0001h Reference Temperature 5.2.
5.2.6.2.1 State of the drive prior to testing The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST. It is the responsibility of the host application to determine the “not ready” cause.
2. The Self-Test Results Value field is set to Fh 3. The drive will store the log page to non-volatile memory After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its SelfTest Results Log page in non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed by the drive. The self-test results value is a 4-bit field that reports the results of the test.
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6.0 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. 6.1 AC power requirements None. 6.2 DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Table 2: ST3146854SS DC power requirements Notes Voltage ST3146854SS 3 Gbit mode ST3146854SS 1.
Table 3: ST373454SS DC power requirements Notes Voltage ST373454SS 3 Gbit mode ST373454SS 1.5 Gbit mode (Amps) (Amps) (Amps) (Amps) +5V +12V [2] +5V +12V [2] Regulation [5] ±5% ±5% [2] ±5% ±5% [2] Avg idle current DCX [1] [7] 1.02 0.56 1.07 0.56 Maximum starting current (peak DC) DC 3σ [3] 1.20 1.76 1.21 1.78 (peak AC) AC 3σ [3] 1.62 3.79 1.56 3.87 [1] [4] 1.03 0.04 0.91 0.04 [1] [6] 1.12 0.95 1.00 0.94 [1] 1.13 0.96 1.02 0.96 1.64 2.70 1.52 2.
[4] [5] [6] [7] This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive. See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response. Operating condition is defined as random 8 block reads with 225 I/Os per second for ST3146854SS drives, 230 I/Os per second for ST373454SS drives, and 230 I/Os per second for ST336754SS drives. Current and power specified at nominal voltages.
Figure 2. Typical ST3146854SS drive +12V current profile Figure 3. Typical ST3146854SS drive +5V current profile 28 Cheetah 15K.4 SAS Product Manual, Rev.
Figure 4. Typical ST373454SS drive +12V current profile Figure 5. Typical ST373454SS drive +5V current profile Cheetah 15K.4 SAS Product Manual, Rev.
Figure 6. Typical ST336754SS drive +12V current profile Figure 7. Typical ST336754SS drive +5V current profile 30 Cheetah 15K.4 SAS Product Manual, Rev.
6.3 Power dissipation ST3146854SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 14.34 watts (48.93 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.
ST373454SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 11.8 watts (40.27 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.
ST336754SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 10.33 watts (35.25 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.
6.4 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb temperature is 82°F (28°C). 6.4.1 Temperature a.
6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 6.4.3 Effective altitude (sea level) a. Operating –1,000 to +10,000 feet (–305 to +3,048 meters) b. Non-operating –1,000 to +40,000 feet (–305 to +12,210 meters) 6.4.
d. Packaged Disc drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg). Package size Packaged/product weight Drop height <600 cu in (<9,800 cu cm) 600-1800 cu in (9,800-19,700 cu cm) >1800 cu in (>19,700 cu cm) >600 cu in (>9,800 cu cm) Any 0-20 lb (0 to 9.1 kg) 0-20 lb (0 to 9.1 kg) 20-40 lb (9.
6.4.4.2 Vibration a. Operating—normal The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding 5-500 Hz @ 0.5 G (zero to peak) Vibration may be applied in the X, Y, or Z axis. Operating normal translational random flat profile 10 - 400 Hz 0.4 GRMS b.
6.4.7 Acoustics Sound power during idle mode shall be 3.6 bels typical when measured to ISO 7779 specification. There will not be any discrete tones more than 10 dB above the masking noise on typical drives when measured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive. 6.4.8 Electromagnetic susceptibility See Section 2.1.1.1. 6.5 Mechanical specifications Refer to Figure 16 for detailed physical dimensions. See Section 8.
7.0 Defect and error management The drive, as delivered, complies with this product manual. The read error rates and specified storage capacities are not dependent upon use of defect management routines by the host (initiator). Defect and error management in the SCSI protocol involves the drive internal defect/error management and SAS system error considerations (errors in communications between the initiator and the drive).
When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive does not report any unrecovered errors. Table 5: Read and write retry count maximum recovery times Maximum recovery time per Read retry count1 LBA (cumulative, msec) Maximum recovery time per Write retry count1 LBA (cumulative, msec) 0 51.
8.0 Installation Cheetah disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accomodate the drive. In such systems, the host system typically provides a carrier or tray into which you need to mount the drive. Mount the drive to the carrier or tray provided by the host system using four 6-32 UNC screws.
8.2 Cooling Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6.4.1, "Temperature." The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temperature measurement guidelines described in Section 6.4.1.
8.3 Drive mounting Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface. The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm).
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9.0 Interface requirements This section partially describes the interface requirements as implemented on Cheetah drives. Additional information is provided in the SAS Interface Manual (part number 100293071). 9.1 SAS features This section lists the SAS-specific features supported by Cheetah drives. 9.1.1 task management functions Table 6 lists the SAS task management functions supported.
9.2 Dual port support Cheetah SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address. The two ports run at the same link rate. The first port to successfully complete speed negotiation sets the link rate support by both ports. When the second port participates in speed negotiation, it indicates the only supported speed is the speed selected by the first port.
9.3 SCSI commands supported Table 8 lists the SCSI commands supported by Cheetah drives. Table 8: Commands supported by Cheetah 15K.
Table 8: Commands supported by Cheetah 15K.
Table 8: Commands supported by Cheetah 15K.
Table 8: Commands supported by Cheetah 15K.4 SAS family drives (continued) Command name Command code Supported Write Same 41h Y PBdata N LBdata N XDRead 52h N XDWrite 50h N XPWrite 51h N [1] [2] [3] [4] 50 Cheetah drives can format to any multiple of four bytes per logical block in the range 512 to 704 bytes. Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.
9.3.1 Inquiry data Table 9 lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS Interface Manual. Table 9: Cheetah 15K.
Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status. On drives requiring unique saved values, the required unique saved values are stored into the saved values storage location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.
9.3.2.
9.3.2.
9.3.2.
9.4 Miscellaneous operating features and conditions Table 10 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feature or condition is not supported.
9.4.1 SAS physical interface Figure 19 shows the location of the SAS device connector J1. Figures 20 and 21 provide the dimensions of the SAS device. Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of Seagate’s SAS drives are provided in the SAS Interface Manual.. J6 SAS Interface connector Figure 19. Physical interface Cheetah 15K.4 SAS Product Manual, Rev.
0.80 (6X) 5.92 7.62 4.65 0.52 2.00 (3X) 0.45 5.08 0.08 x 45 0.03 (7X) 0.10 M E 42.73 REF. 41.13 0.30 0.15 0.20 B 0.05 (2X) C A B 4.00 1.10 0.08 0.15 D 0.30 CL OF DATUM D 0.05 (4X) A B R0.30 C 0.08 (4X) SEE Detail1 33.43 0.05 B 15.875 15.875 1.27 (14X) 1.27 (6X) 0.84 5.08 0.05 (22X) 0.15 B 4.90 0.08 0.35MIN P15 P1 S7 S1 CL OF DATUM B Figure 20. 58 SAS connector dimensions Cheetah 15K.4 SAS Product Manual, Rev.
Detail A 6.10 S14 2.25 S8 0.30 0.05 0.40 4.85 0.05 x 45 (5X) 0.05 0.10 B 0.05 X 45 (3X) CORING ALLOWED IN THIS AREA. E 4.40 0.15 R0.30 0.08 SEE Detail 2 C 1.95 0.08 A 45 0.35 3.90 0.05 0.15 SECTION C - C SECTION A - A 0.08 0.05 CONTACT SURFACE FLUSH TO DATUM A 0.03 65 1.23 0.05 0.08 1.90 0.08 30 0.05 Detail 2 2.40 0.08 0.10 A SECTION B - B D Figure 21. SAS connector dimensions 9.4.2 Physical characteristics This section defines physical interface connector. 9.4.
9.4.4 Electrical description SAS drives use the device connector for: • DC power • SAS interface • Activity LED This connector is designed to either plug directly into a backpanel or accept cables. 9.4.5 Pin descriptions This section provides a pin-out of the SAS device and a description of the functions provided by the pins. Table 12: SAS pin descriptions Pin Signal name S1 Port A Ground S2* +Port A_in S3* Signal type Pin Signal name P1* NC (reserved 3.3Volts) P2* NC (reserved 3.
9.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 22. The receiver is AC coupling to eliminate ground shift noise. .01 TX RX Differential Transfer Medium Transmitter 100 TY Figure 22. SAS transmitters and receivers 9.4.7 Power Receiver 100 RY .01 The drive receives power (+5 volts and +12 volts) through the SAS device connector. Three +12 volt pins provide power to the drive, 2 short and 1 long.
The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +3.3 volt supply through an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive. See Table 14 for the output characteristics of the LED drive signals. Table 14: LED drive signal State Test condition Output voltage LED off, high 0 V ≤ VOH ≤ 3.6 V -100 µA < IOH < 100 µA LED on, low IOL = 15 mA 0 ≤ VOL ≤ 0.225 V 9.5.
9.5.2.1.2 Receive eye mask Figure 23 describes the receive eye mask. This eye mask applies to jitter after the application of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 dB/decade below a frequency of ((bit rate) / 1.667). Absolute amplitude (in V) Z2 Z1 0V -Z1 -Z2 0 X1 X2 1-X1 1-X2 1 Normalized time (in UI) Figure 23.
The leading and trailing edge slopes of figure 23 shall be preserved.
9.5.2.2 Transmitter signal characteristics Table 16 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero-length test load. All specifications are based on differential measurements. The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. Table 16 specifies the signal characteristics.
9.5.2.3 Receiver signal characteristics Table 17 defines the compliance point requirements of the signal at the receiver end of a TxRx connection as measured into the test loads specified in figure 26 and figure 27. Table 17: Receiver signal characteristics Signal characteristic Units 1.5 Gbps 3.0 Gbps N/A See table 18 See table 18 2 x Z2 mV(P-P) 1,200 1,600 2 x Z1 mV(P-P) 325 275 X1a UI 0.275 0.275 UI 0.50 0.50 ps 80 75 mV(P-P) 2.000 2.
9.5.2.3.2 Receiver jitter tolerance Table 19 defines the amount of jitter the receiver shall tolerate . Table 19: Receiver jitter tolerance 1.5 Gbpsa 3.0 Gbpsa Sinusoidal jitterb,c Deterministic jittere,f,h Total jitterh Sinusoidal jitterb,d Deterministic jittere,g,h Total jitterh 0.10 0.35 0.65 0.10 0.35 0.65 a Units are in UI.
Table 20: Impedance requirements (Sheet 2 of 2) Requirement Common mode impedance b,e Units 1.5 Gbps 3.0 Gbps ohm 20 min/40 max 20 min/40 max ohm 60 min/115 max 60 min/115 max ohm 5 5 ohm 15 min/40 max 15 min/40 max Transmitter source termination Differential impedanceb Differential impedance imbalance Common mode b,g impedanceb a All times indicated for time domain reflectometer measurements are recorded times.
A combination of a zero-length test load and the transmitter compliance transfer function (TCTF) test load methodology is used for the specification of transmitter characteristics. This methodology specifies the transmitter signal at the test points on the required test loads. The transmitter uses the same settings (e.g., preemphasis, voltage swing) with both the zero-length test load and the TCTF test load. The signal specifications at IR are met under each of these loading conditions.
Figure 26 shows the compliance interconnect test load. 10 nF Tx+ 50 ohm Probe points TCTF 10 nF Tx- 50 ohm SAS internal connector Figure 26. Compliance interconnect test load Figure 27 shows the zero-length test load. 50 ohm 10 nF Tx+ Probe points 10 nF Tx- 50 ohm SAS internal connector Figure 27. Zero-length test load Figure 28 shows an ISI loss example at 3.0 Gbps. S21 (dB) Compliance interconnect magnitude response and ISI loss example for 3.0 Gbps 0 ISI loss > 3.9 dB -10.
Figure 29 shows an ISI loss example at 1.5 Gbps. S21 (dB) Compliance interconnect magnitude response and ISI loss example for 1.5 Gbps 0 ISI loss > 2.0 dB -5.4 dB Sample compliance interconnect 0.15 0.75 1.5 Figure 29. ISI loss example at 1.5 Gbps 9.5.2.5 Receiver characteristics Frequency (GHz) The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equivalent impedance as specified in table 20.
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10.0 Seagate Technology support services Online services Internet www.seagate.com for information about Seagate products and services. Worldwide support is available 24 hours daily by e-mail for your questions. Presales Support: www.seagate.com/support/email/email_presales.html or Presales@Seagate.com Technical Support: www.seagate.com/support/email/email_disc_support.html or DiscSupport@Seagate.com mySeagate my.seagate.
Customer Service Operations Warranty Service Seagate offers worldwide customer support for Seagate drives. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for warrantyrelated issues. Resellers or end users of drive products should contact their place of purchase or one of the Seagate CSO warranty centers for assistance. Have your drive’s “ST” model number and serial number available.
European support services For presales and technical support in Europe, dial the Seagate Service Center toll-free number for your specific location. If your location is not listed here, dial our presales and technical support call center at +1-405324-4714 from 8:00 A.M. to 11:45 A.M. and 1:00 P.M. to 5:00 P.M. (Central Europe time) Monday through Friday. The presales and technical support call center is located in Oklahoma City, USA.
Asia/Pacific support services For Asia/Pacific presales and technical support, dial the toll-free number for your specific location. The Asia/ Pacific toll-free numbers are available from 6:00 A.M. to 10:45 A.M. and 12:00 P.M. to 6:00 P.M. (Australian Eastern time) Monday through Friday, except as noted. If your location is not listed here, direct dial one of our technical support locations. Warranty service is available from 9:00 A.M. to 6:00 P.M. April through October, and 10:00 A.M. to 7:00 P.M.
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Index Numerics 12 volt pins 61 5 volt pins 61 A abort task set function 45 AC coupling 61 AC power requirements 25 ACA active status 56 ACA active, faulted initiator status 56 acoustics 38 active LED Out signal 61 actuator 9 assembly design 7 adaptive caching 56 AFR 9, 18 air cleanliness 37 air flow 34, 42 illustrated 42 air inlet 42 altitude 35 ambient 34 ambient temperature 34, 42 Annualized Failure Rate 18 ANSI documents SCSI 5 Serial Attached SCSI 5 asynchronous event notification 56 audible noise 3 au
environment 42 environmental limits 34 requirements 17 environmental control 37 error management 39 rates 17 minimum 12 intermediate/condition met/good status 56 intermediate/good status 56 internal data rate 11 internal defects/errors 39 internal drive characteristics 11 F jumpers 41 FCC rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 Format command execution time 12 function complete, code 00 45 not supported, code 05 45 reject, code 04 45 L G Go
MTBF 17, 18, 34 MTBF, see AFR 18 N noise audible 3 noise immunity 27 non-operating 35, 37 temperature 34 non-operating vibration 37 O office environment 37 operating 35, 37 operating environment 18 option selection 60 options 10 orientation 35 out-of-plane distortion 43 P package size 36 package test specification 5 packaged 36 parameter rounding 56 PCBA 43 peak bits per inch 11 peak operating current 25, 26 peak-to-peak measurements 27 performance characteristics detailed 11 general 12 performance degra
SMP = 1 in Mode Select command 56 spindle brake 8 standards 3 start/stop time 12 Sulfur 37 support services 73 surface stiffness allowable for non-flat surface 43 switches 41 synchronized spindle operation 56 system chassis 43 zone bit recording (ZBR) 8 T task management functions 45 Abort task set 45 Clear ACA 45 Clear task set 45 terminate task 45 task management response codes 45 Function complete 00 45 Function not supported 05 45 Function reject 04 45 task set full status 56 technical support service
Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100350601, Rev.
