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Seagate Cheetah NS SAS ST3400755SS Product Manual

Seagate cheetah ns sas product manual
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Product Manual
Cheetah
NS SAS
®
ST3400755SS
100453994
Rev. B
August 2007

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Summary of Contents for Seagate Cheetah NS SAS ST3400755SS

  • Page 1 Product Manual Cheetah NS SAS ® ST3400755SS 100453994 Rev. B August 2007...
  • Page 2 United States and/or other countries. Cheetah, SeaTools and SeaTDD are either trademarks or reg- istered 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 own- ers.

  • Page 3: Table Of Contents

    Scope ............... . 1 Standards, compliance and reference documents .
  • Page 4 Seagate Technology support services ........
  • Page 5 Figure 1. Typical ST3400755SS drive +5V and +12V current profiles........25 Figure 2.
  • Page 6 Cheetah NS SAS Product Manual, Rev. B...

  • Page 7: Scope

    Scope ® ® This manual describes Seagate Technology LLC, Cheetah NS SAS (Serial Attached SCSI) disk drives. Cheetah drives support the SAS Protocol specifications to the extent described in this manual. The SAS Inter- face Manual (part number 100293071) describes the general SAS characteristics of Cheetah NS and other Seagate SAS drives.
  • Page 8 Cheetah NS SAS Product Manual, Rev. B...

  • Page 9: Standards, Compliance And Reference Documents

    Section 8.3. Standards The Cheetah NS SAS family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SAS Interface Manual, part number 100293071. The Cheetah disk drive is a UL recognized component per UL1950, CSA certified to CAN/CSA C22.2 No. 950- 95, and VDE or TUV certified to EN60950.

  • Page 10: Compliance

    • External modem • Mouse Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate marking for their product.

  • Page 11: Reference Documents

    In case of conflict between this document and any referenced document, this document takes precedence. Cheetah NS SAS Product Manual, Rev. B Seagate part number: 100453998 Seagate part number: 100293068 Seagate part number: 100293071 X3.270-1996(SCSI-3) Architecture Model Seagate part number: 30553-001 Seagate P/N 30190-001 (under 100 lb.) Seagate P/N 30191-001 (over 100 lb.)
  • Page 12 Cheetah NS SAS Product Manual, Rev. B...

  • Page 13: General Description

    General description Cheetah drives combine Tunneling Magnetoresistive (TMR) heads and a Serial Attached SCSI (SAS) interface to provide high performance, high capacity data storage for a variety of systems including engineering worksta- tions, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation computing demands for performance, scalability, flexibility and high-density storage requirements.

  • Page 14: Standard Features

    Standard features Cheetah NS SAS drives have the following standard features: • Perpendicular recording technology • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller • Support for SAS expanders and fanout adapters • Downloadable firmware using the SAS interface •...

  • Page 15: Formatted Capacities

    752,213,841 749,632,385 2. Seagate drives also may be used at the maximum available capacity at a given block size, but the excess capacity above the guaranteed level will vary between other drive families and from generation to genera- tion, depending on how each block size actually formats out for zone frequencies and splits over servo bursts.
  • Page 16 Cheetah NS SAS Product Manual, Rev. B...

  • Page 17: Performance Characteristics

    Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah NS SAS drives. Internal drive characteristics ST3400755SS Drive capacity 400.0 Read/write data heads Tracks per surface (total) 92,200 Tracks per inch 155,000 Peak bits per inch 979k Areal Density 151.7...

  • Page 18: Format Command Execution Time (Minutes)

    4.2.2 Format command execution time (minutes) ST3400755SS Maximum (with verify) Maximum (without verify) Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect). 4.2.3 General performance characteristics Sustainable disk transfer rate*:...

  • Page 19: Prefetch/Multi-Segmented Cache Control

    Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select this feature, the host sends the Mode Select command with the proper values in the applicable bytes in page 08h.

  • Page 20: Prefetch Operation

    If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made avail- able for future read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed independently, having nothing to do with the state of RCD.

  • Page 21: Reliability Specifications

    Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all inter- face timings, power supply voltages, environmental requirements and drive mounting constraints. Seek error rate: Read Error Rates Recovered Data Unrecovered Data Miscorrected Data Interface error rate: MTBF Annualized Failure Rate (AFR) Preventive maintenance:...

  • Page 22: Seek Errors

    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.

  • Page 23: S.m.a.r.t

    5.2.4 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow you to back up the data before an actual failure occurs. Note.

  • Page 24: Thermal Monitor

    Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before the interval expires, the error rate is considered to be unacceptable.
  • Page 25 DST. It is the responsibility of the host application to determine the “not ready” cause. While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

  • Page 26: Product Warranty

    Seagate’s option and at no charge to the customer, if returned by customer at customer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty...
  • Page 27 Seagate will pay for transporting the repair or replacement item to the customer. For more detailed warranty information, refer to the standard terms and conditions of purchase for Seagate products on your pur- chase documentation. The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472.
  • Page 28 Cheetah NS SAS Product Manual, Rev. B...

  • Page 29: Physical/Electrical Specifications

    Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. AC power requirements None. DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.

  • Page 30: Conducted Noise Immunity

    See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient response. During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track. General DC power requirement notes. 1.

  • Page 31: Power Dissipation

    Figure 19. Typical ST3400755SS drive +5V and +12V current profiles Power dissipation Typical power dissipation under idle conditions in 3Gb operation is 8.19 watts (27.95 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 20).

  • Page 32: Environmental Limits

    Non-operating –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp.

  • Page 33: Relative Humidity

    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.
  • Page 34 >600 cu in (>9,800 cu cm) Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.

  • Page 35: Acoustics

    There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea- sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.

  • Page 36: European Union Restriction Of Hazardous Substances (Rohs) Directive

    6.4.8 European Union Restriction of Hazardous Substances (RoHS) Directive Seagate designs its products to meet environmental protection requirements worldwide, including regulations restricting certain chemical substances. A new law, the European Union Restriction of Hazardous Substances (RoHS) Directive, restricts the presence of chemical substances, including Lead, Cadmium, Mercury, Hexavalent Chromium, PBB and PBDE, in electronic products, effective July 2006.

  • Page 37: Mechanical Specifications

    Mechanical specifications Refer to Figure 23 for detailed physical dimensions. See Section 8.3, “Drive mounting.” Height: 1.028 in Width: 4.010 in Depth: 5.787 in Weight: 1.76 pounds 26.11 MAX (1.028 MAX) UNITS OF MEASURE: mm (inches) 20.14 (.793) 101.60 +/- .25 (4.000 +/- .010) 50.80 (2.000)
  • Page 38 Cheetah NS SAS Product Manual, Rev. B...

  • Page 39: Defect And Error Management

    Defect and error management Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data integrity, perform drive self-maintenance, and validate proper drive operation. SCSI defect and error management involves drive internal defect/error management and SAS system error considerations (errors in communications between the initiator and the drive).
  • Page 40 The drive firmware error recovery algorithms consists of 11 levels for read recoveries and five levels for write. Each level may consist of multiple steps, where a step is defined as a recovery function involving a single re- read or re-write attempt. The maximum level used by the drive in LBA recovery is determined by the read and write retry counts.

  • Page 41: Sas System Errors

    SAS system errors Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual. The SSP Response returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive. Status returned by the drive to the initiator is described in the SAS Interface Manual.

  • Page 42: Deferred Auto-Reallocation

    DAR is most effective when AWRE and ARRE are enabled—this is the default setting from the Seagate factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location.

  • Page 43: Installation

    Installation Cheetah disk 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 accommodate the drive. In such systems, the host system typically provides a carrier or tray into which you need to mount the drive.

  • Page 44: Cooling

    Cooling The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that the drive operates within the temperature measurement guidelines described in Section 6.4.1. In some cases, forced airflow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1.

  • Page 45: Drive Mounting

    (F) is applied to the fourth point. Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Technology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame.
  • Page 46 Cheetah NS SAS Product Manual, Rev. B...

  • Page 47: Interface Requirements

    Interface requirements This section partially describes the interface requirements as implemented on Cheetah drives. Additional infor- mation is provided in the SAS Interface Manual (part number 100293071). SAS features This section lists the SAS-specific features supported by Cheetah drives. 9.1.1 task management functions Table 4 lists the SAS task management functions supported.

  • Page 48: Dual Port Support

    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.

  • Page 49: Scsi Commands Supported

    SCSI commands supported Table 6 lists the SCSI commands supported by Cheetah drives. Table 6: Commands supported by Cheetah NS SAS family drives Command name Change Definition Compare Copy Copy and Verify Format Unit [1] DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported...
  • Page 50 Table 6: Commands supported by Cheetah NS SAS family drives (continued) Command name Non-medium Error page (06h) Pages Supported list (00h) Read Error Counter page (03h) Read Reverse Error Counter page (04h) Self-test Results page (10h) Background Medium Scan page (15h) Start-stop Cycle Counter page (0Eh) Temperature page (0Dh) Verify Error Counter page (05h)
  • Page 51 Table 6: Commands supported by Cheetah NS SAS family drives (continued) Command name Reassign Blocks Receive Diagnostic Results Supported Diagnostics pages (00h) Translate page (40h) Release Release (10) Request Sense Actual Retry Count bytes Extended Sense Field Pointer bytes Reserve 3rd Party Reserve Extent Reservation Reserve (10)
  • Page 52 Table 6: Commands supported by Cheetah NS SAS family drives (continued) Command name FUA bit Write Long Write Same PBdata LBdata XDRead XDWrite XPWrite Cheetah NS drives can format to 512, 520, 524, or 528 bytes per logical block. Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.

  • Page 53: Inquiry Data

    9.3.1 Inquiry data Table 7 lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS Interface Manual. Table 7: Cheetah NS SAS inquiry data Bytes Data (hex) 0-15 xx** 16-31 32-47 48-63 64-79...
  • Page 54 On standard OEM drives, the saved values are taken from the default values list and stored into the saved values storage location on the media prior to shipping. 3. Current values Current values are volatile values being used by the drive to control its operation. A Mode Select command can be used to change the values identified as changeable values.
  • Page 55 9.3.2.1 ST3400755SS Mode Sense data MODE PAGES: 80 06 00 80 0f 00 00 00 80 06 b7 c0 0f 00 00 00 81 0a c0 0b ff 00 00 00 05 00 ff ff 81 0a ff ff 00 00 00 00 ff 00 ff ff 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 83 22 68 58 00 00 00 38 00 00 04 01 02 00 00 01 00 83 00 61 40 00 00 00...

  • Page 56: Miscellaneous Operating Features And Conditions

    Miscellaneous operating features and conditions Table 8 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. Table 8: Miscellaneous features Supported Feature or condition...

  • Page 57: Sas Physical Interface

    Figure 26 shows the location of the SAS device connector J1. Figures 27 and 28 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.. SAS Interface connector Figure 26.
  • Page 58 5.92 2.00 (3X) 0.30 0.05 (2X) 4.00 0.08 0.15 D 0.30 0.05 (4X) 15.875 1.27 (14X) 0.35MIN Figure 27. SAS connector dimensions 0.80 (6X) 7.62 4.65 0.45 0.03 (7X) 5.08 0.10 M E 42.73 REF. 41.13 0.15 0.20 B SEE Detail1 33.43 0.05 15.875...

  • Page 59: Physical Characteristics

    Detail A 6.10 2.25 0.05 4.85 0.05 0.10 B 4.40 SEE Detail 2 0.35 3.90 0.15 SECTION A - A CONTACT SURFACE FLUSH 0.08 0.05 TO DATUM A 1.23 0.05 Detail 2 0.08 0.05 2.40 Figure 28. SAS connector dimensions 9.4.2 Physical characteristics This section defines physical interface connector.

  • Page 60: Electrical Description

    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 10: SAS pin descriptions Signal name...

  • Page 61: Sas Transmitters And Receivers

    9.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 29. The receiver is AC cou- pling to eliminate ground shift noise. Transmitter Figure 29. SAS transmitters and receivers 9.4.7 Power 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.

  • Page 62: Differential Signals

    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 resis- tor are external to the drive. See Table 12 for the output characteristics of the LED drive signals. Table 12: LED drive signal State...
  • Page 63 9.5.2.1.2 Receive eye mask Figure 30 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)
  • Page 64 The leading and trailing edge slopes of figure 30 shall be preserved. As a result the amplitude value of Z1 is less than that given in table 15 and Z1 tion: ---------------------------------------------------------------------------------------------------------------------------------- - where: is the value for Z1 to be used for the tolerance masks; and , X1 , and X2 are the values in table 15 for Z1, X1, and X2.
  • Page 65 9.5.2.2 Transmitter signal characteristics Table 14 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 14 specifies the signal characteristics.
  • Page 66 9.5.2.3 Receiver signal characteristics Table 15 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 33 and figure 34. Table 15: Receiver signal characteristics Signal characteristic Jitter (see figure 30) 2 x Z2...
  • Page 67 9.5.2.3.2 Receiver jitter tolerance Table 17 defines the amount of jitter the receiver shall tolerate . Table 17: Receiver jitter tolerance 1.5 Gbps Sinusoidal Deterministic e,f,h jitter jitter 0.10 0.35 a Units are in UI. b The jitter values given are normative for a combination of deterministic jitter, random jitter, and sinusoidal jitter that receivers shall be able to tolerate without exceeding a BER of 10 progressively greater amplitude at lower frequencies, according to the mask in figure 32 with the same deterministic jitter and random jitter levels as were used in the high frequency sweep.
  • Page 68 Table 18: Impedance requirements (Sheet 2 of 2) Requirement Common mode impedance Transmitter source termination Differential impedance Differential impedance imbalance Common mode impedance a All times indicated for time domain reflectometer measurements are recorded times. Recorded times are twice the transit time of the time domain reflectometer signal.
  • Page 69 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 trans- mitter signal at the test points on the required test loads. The transmitter uses the same settings (e.g., pre- emphasis, voltage swing) with both the zero-length test load and the TCTF test load.
  • Page 70 Figure 34 shows the zero-length test load. 50 ohm 10 nF Probe points 10 nF 50 ohm SAS internal connector Figure 34. Zero-length test load Figure 35 shows an ISI loss example at 3.0 Gbps. (dB) Compliance interconnect magnitude response and ISI loss example for 3.0 Gbps ISI loss >...
  • Page 71 9.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equiva- lent impedance as specified in table 18. The receiver operates within a BER of 10 when a SAS signal with valid voltage and timing characteristics is delivered to the compliance point from a 100 ohm source.
  • Page 72 Cheetah NS SAS Product Manual, Rev. B...

  • Page 73: Seagate Technology Support Services

    Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system, as well as product availability and compatibility. Technical Support Seagate technical support is available to assist you online at support.seagate.com...
  • Page 74 Seagate Customer Service Operations (CSO) representative for warranty- related issues. Resellers or end users of drive products should contact their place of purchase or Seagate warranty service for assistance. Have your serial number and model or part number available.
  • Page 75 Index Numerics 12 volt pins 55 5 volt pins 55 abort task set function 41 AC coupling 55 AC power requirements 23 ACA active status 50 ACA active, faulted initiator status 50 acoustics 29 active LED Out signal 55 actuator assembly design 7 adaptive caching 50 AFR 8...
  • Page 76 environmental control 29 error management 33 rates 15 errors 33 EU RoHS directive 30 FCC rules and regulations 3 features 8 interface 41 firmware 8 corruption 46 flawed sector reallocation 8 Format command execution time 12 function complete, code 00 41 not supported, code 05 41 reject, code 04 41 Good status 50...
  • Page 77 audible 3 noise immunity 24 non-operating 27 temperature 26 non-operating vibration 29 office environment 29 operating 27 option selection 54 out-of-plane distortion 39 package size 28 package test specification 5 packaged 28 parameter rounding 50 PCBA 39 peak bits per inch 11 peak operating current 23 peak-to-peak measurements 24 performance characteristics...
  • Page 78 operation 50 system chassis 39 task management functions 41 Abort task set 41 Clear ACA 41 Clear task set 41 terminate task 41 task management response codes 41 Function complete 00 41 Function not supported 05 41 Function reject 04 41 task set full status 50 technical support services 67 temperature 26...
  • Page 80 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100453994, Rev. B, Printed in USA...

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