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Seagate ST2000NM0041 Product Manual

Seagate ST2000NM0041 Product Manual

Constellation es.1 series sas
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Product Manual
Constellation
Standard Models
ST2000NM0001
ST1000NM0001
ST500NM0001
100650925
Rev. A
February 2011
ES.1 Series SAS
®
Self-Encrypting Drive Models
ST2000NM0021
ST1000NM0021
ST500NM0021
SED FIPS 140-2 Models
ST2000NM0041
ST1000NM0041
ST500NM0041

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Summary of Contents for Seagate ST2000NM0041

  • Page 1 Product Manual Constellation ES.1 Series SAS ® Standard Models Self-Encrypting Drive Models ST2000NM0001 ST2000NM0021 ST1000NM0001 ST1000NM0021 ST500NM0001 ST500NM0021 SED FIPS 140-2 Models ST2000NM0041 ST1000NM0041 ST500NM0041 100650925 Rev. A February 2011...

  • Page 2: Revision History

    LLC in the United States and/or other countries. Constellation ES.1 and SeaTools are either trade- marks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. The FIPS logo is a certification mark of NIST, which does not imply product endorsement by NIST, the U.S., or Canadian governments.

  • Page 3: Table Of Contents

    Seagate Technology support services ........
  • Page 4 Environmental limits ............36 7.5.1 Temperature .
  • Page 5 12.4.7 Power ............68 12.5 Signal characteristics.
  • Page 6 Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 7: List Of Figures

    List of Figures Figure 1. 2TB model current profiles ............. . .27 Figure 2.
  • Page 8 Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 9: Seagate Technology Support Services

    Authorized Service Centers For information regarding Warranty Support, visit http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance For information regarding Data Recovery Services, visit http://www.i365.com For Seagate OEM & Distribution partner portal, visit https://direct.seagate.com/portal/system For Seagate reseller portal, visit http://spp.seagate.com Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 10: Scope

    Constellation ES.1 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. The Self-Encrypting Drive Reference Manual, part number 100515636, describes the interface, general operation, and security features available on Self-Encrypting Drive models.

  • Page 11: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 11.3. Standards The Constellation ES.1 family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SAS Interface Manual, part number 100293071. The drives are recognized in accordance with UL 60950-1 as tested by UL, CSA 60950-1 as tested by CSA, and EN60950-1 as tested by TUV.

  • Page 12: Electromagnetic Compliance

    • Printer • 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 13: European Union Restriction Of Hazardous Substances (Rohs)

    July 2006. This drive is manufactured with components and materials that comply with the RoHS Directive. A number of parts and materials in Seagate products are procured from external suppliers. We rely on the rep- resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our...

  • Page 14: General Description

    General description Constellation ES.1 drives provide high performance, high capacity data storage for a variety of systems includ- ing engineering workstations, 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 15: Standard Features

    Standard features Constellation ES.1 drives have the following standard features: • Perpendicular recording technology • 1.5 / 3 / 6 Gb Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for SAS expanders and fanout adapters •...

  • Page 16: Performance

    Seagate recommends product planning in one of two modes: 1. Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with backward and forward compatibility from generation to generation.

  • Page 17: Factory-Installed Options

    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. •...

  • Page 18: Performance Characteristics

    This section provides detailed information concerning performance-related characteristics and features of Con- stellation ES.1 drives. Internal drive characteristics ST2000NM0001 ST1000NM0001 ST500NM0001 ST2000NM0021 ST1000NM0021 ST500NM0021 ST2000NM0041 ST1000NM0041 ST500NM0041 Drive capacity 500GB (formatted, rounded off value) Read/write data heads Bytes per track...

  • Page 19: Format Command Execution Time For 512-Byte Sectors (Minutes)

    Format command execution time for 512-byte sectors (minutes) ST2000NM0001 ST1000NM0001 ST500NM0001 ST2000NM0021 ST1000NM0021 ST500NM0021 ST2000NM0041 ST1000NM0041 ST500NM0041 Maximum (with verify) Maximum (without verify) Note. There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity.

  • Page 20: 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 21: Caching Write Data

    5.5.1 Caching write data Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the Write command. 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.

  • Page 22: 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: Less than 10 errors in 10 seeks Read Error Rates Recovered Data Less than 10 errors in 10 bits transferred (OEM default settings)

  • Page 23: Seek Errors

    6.1.3 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 24: S.m.a.r.t

    Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure data integrity. 6.2.4 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.

  • Page 25: Thermal Monitor

    S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of errors for the current interval. This counter is referred to as the Failure Counter. 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.

  • Page 26: Drive Self Test (Dst)

    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 27 6.2.6.2.3 Short and extended tests DST has two testing options: 1. short 2. extended These testing options are described in the following two subsections. Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.

  • Page 28: 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 procedure.

  • Page 29: Physical/Electrical Specifications

    Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. PowerChoice power management Drives using the load/unload architecture provide programmable power management to tailor systems for per- formance and greater energy efficiency. The table below lists the supported PowerChoice modes. The further you go down in the table, the more power savings you get.

  • Page 30: Powerchoice Reporting Methods

    7.1.1 PowerChoice reporting methods PowerChoice provides these reporting methods for tracking purposes: Request Sense command reports • Current power condition • Method of entry Note. Processing the Request Sense command does not impact the drive’s power save state. Mode Sense command reports (mode page 0x1A) •...
  • Page 31 Table 2: DC power requirements 2TB drive (Standard & SED model) 3.0Gb mode 6.0Gb mode Notes (Amps) (Amps) Voltage +12V [4] +12V [4] Regulation ±5% ±5% [2] ±5% ±5% [2] Avg idle current DCX [1] [7] 0.24 0.43 0.25 0.37 Advanced idle current Idle_A 0.36...
  • Page 32 Table 3: DC power requirements 1TB drive (Standard & SED model) 3.0Gb mode 6.0Gb mode Notes (Amps) (Amps) Voltage +12V [4] +12V [4] Regulation ±5% ±5% [2] ±5% ±5% [2] Avg idle current DCX [1] [7] 0.35 0.28 0.36 0.28 Advanced idle current Idle_A 0.35...
  • Page 33 Table 4: DC power requirements 500GB drive (Standard & SED model) 3.0Gb mode 6.0Gb mode Notes (Amps) (Amps) Voltage +12V [4] +12V [4] Regulation ±5% ±5% [2] ±5% ±5% [2] Avg idle current DCX [1] [7] 0.36 0.21 0.36 0.21 Advanced idle current Idle_A 0.36...

  • Page 34: Conducted Noise Immunity

    Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient. For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 7200 RPM.

  • Page 35: Current Profiles

    7.3.3 Current profiles The +12V (top) and +5V (bottom) current profiles for the Constellation ES.1 drives are shown below. Figure 1. 2TB model current profiles Note: All times and currents are typical. See Table 2 for maximum current requirements. Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 36: Figure 2. 1Tb Model Current Profiles

    Figure 2. 1TB model current profiles Note: All times and currents are typical. See Table 2 for maximum current requirements. Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 37: Figure 3. 500Gb Model Current Profiles

    Figure 3. 500GB model current profiles Note: All times and currents are typical. See Table 2 for maximum current requirements. Constellation ES.1 SAS Product Manual, Rev. A...

  • Page 38: Power Dissipation

    Power dissipation 2TB models in 3Gb operation Please refer to Table 2 for power dissipation numbers. To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). 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.

  • Page 39: Figure 5. 2Tb Models (6Gb) Dc Current And Power Vs. Input/Output Operations Per Second

    2TB models in 6Gb operation Please refer to Table 2 for power dissipation numbers. To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5.). 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.

  • Page 40: Figure 6. 1Tb Models (3Gb) Dc Current And Power Vs. Input/Output Operations Per Second

    1TB models in 3Gb operation Please refer to Table 2 for power dissipation numbers. To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). 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.

  • Page 41: Figure 7. 1Tb Models (6Gb) Dc Current And Power Vs. Input/Output Operations Per Second

    1TB models in 6Gb operation Please refer to Table 2 for power dissipation numbers. To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 7.). 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.

  • Page 42: Figure 8. 500Gb Models (3Gb) Dc Current And Power Vs. Input/Output Operations Per Second

    500GB models in 3Gb operation Please refer to Table 2 for power dissipation numbers. 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.

  • Page 43: Figure 9. 500Gb Models (6Gb) Dc Current And Power Vs. Input/Output Operations Per Second

    500GB models in 6Gb operation Please refer to Table 2 for power dissipation numbers. To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 9.). 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.

  • Page 44: 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 45: Effective Altitude (Sea Level)

    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).

  • Page 46: Figure 11. Recommended Mounting

    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. Figure 11.

  • Page 47: 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 48: Mechanical Specifications

    Mechanical specifications The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions of the front panel are shown in figure below. Refer to Figure 12 for detailed mounting configuration dimensions. See Section 11.3, “Drive mounting.” Weight: (maximum) 500GB models 1.34 lb 610 g...

  • Page 49: About Fips

    About FIPS The Federal Information Processing Standard (FIPS) Publication 140-2, FIPS PUB 140-2, is a U.S. govern- ment computer security standard used to accredit cryptographic modules. It is titled “Security Requirements for Cryptographic Modules”. The initial publication was on May 25, 2001 and was last updated December 3, 2002. Purpose The National Institute of Standards and Technology (NIST) issued the FIPS 140 Publication Series to coordi- nate the requirements and standards for cryptography modules that include both hardware and software com-...

  • Page 50: About Self-Encrypting Drives

    (TCG) Enterprise Storage Specifications as detailed in Section 3.2. The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the com- puter, storage and digital communications industry. Seagate’s SED models comply with the standards pub- lished by the TCG.

  • Page 51: Locking Sp

    9.2.2 Locking SP The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the Locking SP is available using the BandMasterX or EraseMaster passwords. Since the drive owner can define up to 16 data bands on the drive, each data band has its own password called BandMasterX where X is the number of the data band (0 through 15).

  • Page 52: Cryptographic Erase

    Authenticated firmware download In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts download files which have been cryptographically signed by the appropriate Seagate Design Center. Three conditions must be met before the drive will allow the download operation: 1.

  • Page 53: Defect And Error Management

    10.0 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 54: Sas System Errors

    The drive firmware error recovery algorithms consist of 12 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 55: Background Media Scan

    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 56: Idle Read After Write

    10.7 Idle Read After Write Idle Read After Write (IRAW) utilizes idle time to verify the integrity of recently written data. During idle periods, no active system requests, the drive reads recently written data from the media and compares it to valid write command data resident in the drives data buffer.

  • Page 57: Installation

    11.0 Installation Constellation ES.1 disc drive installation is a plug-and-play process. There are no jumpers, switches, or termi- nators 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.

  • Page 58: Cooling

    11.2 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 7.5.1, "Temperature." The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA).

  • Page 59: Drive Mounting

    11.3 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).

  • Page 60: Interface Requirements

    12.0 Interface requirements This section partially describes the interface requirements as implemented on Constellation ES.1 drives. Addi- tional information is provided in the SAS Interface Manual (part number 100293071). 12.1 SAS features This section lists the SAS-specific features supported by Constellation ES.1 drives. 12.1.1 task management functions Table 6 lists the SAS task management functions supported.

  • Page 61: Dual Port Support

    12.2 Dual port support Constellation ES.1 SAS drives have two independent ports. These ports may be connected in the same or dif- ferent SCSI domains. Each drive port has a unique SAS address. The two ports have the capability of independent port clocking (e.g. both ports can run at 6Gb/s or the first port can run at 6Gb/s while the second port runs at 3Gb/s.

  • Page 62: Scsi Commands Supported

    12.3 SCSI commands supported Table 8 lists the SCSI commands supported by Constellation ES.1 drives. Table 8: Supported commands Command name Command code Supported 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 63 Table 8: Supported commands Command name Command code Supported Last n Deferred Errors or Asynchronous Events page (0Bh) Last n Error Events page (07h) 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) Start-stop Cycle Counter page (0Eh) Temperature page (0Dh)
  • Page 64 Table 8: Supported commands Command name Command code Supported Read Capacity (10) Read Capacity (16) 9Eh/10h Read Defect Data (10) Read Defect Data (12) Read Long Y (non-SED drives only) Read Long (16) 9Eh/11h Reassign Blocks Receive Diagnostic Results Supported Diagnostics pages (00h) Translate page (40h) Release Release (10)
  • Page 65 Table 8: Supported commands Command name Command code Supported Verify (10) BYTCHK bit Verify (12) Verify (16) Verify (32) 7Fh/000Ah Write (6) Write (10) DPO bit FUA bit Write (12) Write (16) Write (32) 7Fh/000Bh Write and Verify (10) DPO bit Write and Verify (12) Write and Verify (16) Write and Verify (32)

  • Page 66: Inquiry Data

    Bytes 16 through 26 reflect model of drive. The table above shows the hex values for Model ST2000NM0001. Refer to the values below for the values of bytes 16 through 26 of your particular model: ST2000NM0001 4D 30 ST2000NM0021 4D 30 ST2000NM0041 4D 30 ST1000NM0001 4D 30 ST1000NM0021 4D 30...
  • Page 67 Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode Select command get their values from default values storage. When power is applied to the drive, it takes saved values from the media and stores them as current val- ues in volatile memory.
  • Page 68 Table 10: Mode Sense data changeable and default values for 2TB drives MODE DATA HEADER: 01 92 00 10 00 00 00 08 BLOCK DESCRIPTOR: e8 e0 88 b0 00 00 02 00 MODE PAGES: 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...
  • Page 69 Table 11: Mode Sense data changeable and default values for 1TB drives MODE DATA HEADER: 01 92 00 10 00 00 00 08 BLOCK DESCRIPTOR: 74 70 6d b0 00 00 02 00 MODE PAGES: 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...
  • Page 70 Table 12: Mode Sense data changeable and default values for 500GB drives MODE DATA HEADER: 01 92 00 10 00 00 00 08 BLOCK DESCRIPTOR: 3a 38 60 30 00 00 02 00 MODE PAGES: 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...

  • Page 71: Miscellaneous Operating Features And Conditions

    12.4 Miscellaneous operating features and conditions Table 13 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 13: Miscellaneous features Supported...

  • Page 72: Sas Physical Interface

    Figure 16 shows the location of the SAS device connector J1. Figures 17 and 18 provide the dimensions of the SAS connector. 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. Figure 16. Physical interface...

  • Page 73: Figure 17. Sas Device Plug Dimensions

    0.80 (6X) 5.92 7.62 4.65 0.52 0.08 x 45 2.00 (3X) 0.45 0.03 (7X) 5.08 0.10 M E 42.73 REF. 41.13 0.15 0.20 B 0.30 0.05 (2X) 1.10 4.00 0.08 C OF DATUM D 0.15 D R0.30 0.08 (4X) 0.30 0.05 (4X) SEE Detail1 33.43...

  • Page 74: Figure 18. Sas Device Plug Dimensions (Detail)

    Detail A 6.10 0.30 0.05 x 45 (5X) 2.25 0.05 0.40 0.05 X 45 (3X) 4.85 0.05 0.10 B CORING ALLOWED IN THIS AREA. 4.40 0.15 R0.30 0.08 SEE Detail 2 1.95 0.08 0.35 0.05 SECTION C - C 3.90 0.15 SECTION A - A CONTACT SURFACE FLUSH...

  • Page 75: Physical Characteristics

    12.4.2 Physical characteristics This section defines physical interface connector. 12.4.3 Connector requirements Contact your preferred connector manufacturer for mating part information. Part numbers for SAS connectors will be provided in a future revision of this publication when production parts are available from major connec- tor manufacturers.

  • Page 76: Sas Transmitters And Receivers

    12.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 19. The receiver is AC cou- pling to eliminate ground shift noise. Differential Transmitter Receiver Transfer Medium Figure 19. SAS transmitters and receivers 12.4.7 Power The drive receives power (+5 volts and +12 volts) through the SAS device connector.

  • Page 77: Differential Signals

    For more information about the Phy, Link, Transport, and Applications layers of the SAS interface, refer to the Seagate SAS Interface Manual, part number 100293071. For more information about the SCSI commands used by Seagate SAS drives, refer to the Seagate SCSI Commands Reference Manual, part number 100293068.
  • Page 78 Constellation ES.1 SAS Product Manual, Rev. A...
  • Page 79 Index cache operation 12 cache segments 12 Numerics caching write data 13 12 volt Canadian Department of Communications 3 pins 68 capacity 5 volt pins 68 unformatted 10 6 Gbps 69 CBC 42 CE Marking 4 check condition status 63 Cipher Block Chaining 42 abort task set function 52 class B limit 3...
  • Page 80 DFE 69 dimensions 40 Global Data Band 43 disc rotation speed 10 Good status 63 drive 39 gradient 36 drive characteristics 10 ground shift noise 68 Drive Locking 43 grounding 51 drive mounting 40 drive select 67 dual port support 53 HDA 50 head and disc assembly (HDA) 6 head and disc assembly.
  • Page 81 latency noise average rotational 10 audible 3 Locking SP 42 noise immunity 26 LockOnReset 43 non-operating 36 logical block address 12 temperature 36 logical block reallocation scheme 7 non-operating vibration 39 logical block size 7 logical segments 12 office environment 39 operating 36 maintenance 14 option selection 67...
  • Page 82 shipping 20 shipping container 36 radio interference regulations 3 shock 37 Random number generator 43 and vibration 37 RCD bit 12 shock mount 51 read error rates 14 SID 42 read/write data heads 10 signal receivers 68 characteristics 68 recommended mounting 38 single-unit shipping pack kit 9 Recoverable Errors 14 SMART 8...
  • Page 83 Unrecoverable Errors 14 unrecovered media data 14 vibration 37 warranty 20 zero latency read 63 Constellation ES.1 SAS Product Manual, Rev. A...
  • Page 84 Constellation ES.1 SAS Product Manual, Rev. A...
  • Page 86 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100650925, Rev. A...

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