Seagate ST373455SS Cheetah 15K.5 SAS Product Manual

Seagate ST373455SS - Cheetah 73.4 GB Hard Drive Manual

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  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 1
    Product Manual Cheetah 15K.5 SAS ST3300655SS ST3146855SS ST373455SS 100384784 Rev. E August 2007
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 2
    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
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 3
    Reliability specifications 15 5.1 Error rates 15 5.1.1 Recoverable Errors 15 5.1.2 Unrecoverable Errors 15 5.1.3 Seek errors 16 5.1.4 Interface errors 16 5.2 Reliability and service 16 5.2.1 Mean time between failure (MTBF 16 5.2.2 Preventive maintenance 16 5.2.3 Hot plugging the drive 17
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 4
    59 9.4.4 Electrical description 60 9.4.5 Pin descriptions 60 9.4.6 SAS transmitters and receivers 61 9.4.7 Power 61 9.5 Signal characteristics 61 9.5.1 Ready LED Out 61 9.5.2 Differential signals 62 10.0 Seagate Technology support services 73 ii Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 5
    25. Figure 26. Cheetah 15K.5 SAS disc drive 1 Typical ST3300655SS drive +12V current profile 26 Typical ST3300655SS drive +5V current profile 26 Typical ST3146855SS drive +12V current profile 27 Typical ST3146855SS drive +5V current profile 27 Typical ST373455SS drive +12V current profile 28
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 6
    2 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 7
    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 Cheetah 15K.5 and other Seagate SAS drives. Figure 1. Cheetah 15K.5 SAS disc drive Cheetah
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 8
    2 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 9
    Cheetah 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 disc drive assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be required
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 10
    complies with the Australia/New Zealand Standard AS/ materials in Seagate products are procured drives documented in this publication. Current supplier declarations include disclosure of the inclusion of any RoHS-regulated substance in such parts or materials. 4 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 11
    with. 2.4 Reference documents Cheetah 15K.5 SAS Installation Guide Seagate part number: 100384785 SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 Applicable ANSI SAS documents SFF-8323 3.5" Drive Form Factor with Serial
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 12
    6 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 13
    access storage devices designed to support the Serial Attached SCSI Protocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of this drive. Cheetah drives are classified as intelligent
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 14
    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 • 128 - deep
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 15
    capacity. 3.7 Factory-installed accessories OEM standard drives are shipped with the Cheetah 15K.5 SAS Installation Guide, part number 100384785, and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified). Cheetah 15K.5 SAS Product Manual, Rev. E 9
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 16
    distribution should specify this option. • The Cheetah 15K.5 SAS Installation Guide, part number 100384785, is usually included with each standard OEM drive shipped, but extra copies may be ordered. • The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 17
    of Cheetah drives. 4.1 Internal drive characteristics Drive capacity hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. **Rounded off value. 4.2 Seek time See Section 9.4.1, "SAS physical interface" on page 57 and the SAS Interface Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 18
    with verify) Maximum (without verify) ST3300655SS 120 60 ST3146855SS 90 45 ST373455SS 60 30 Execution time measured from receipt of the last byte of to support the rates listed and no cable loss. 4.3 Start/stop time The drive accepts the commands listed in the SAS Interface Manual less than
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 19
    SAS Interface Manual specification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. If the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable parameter. Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 20
    segments are cleared. The new data is cached for subsequent drive enables prefetch of contiguous blocks from the disc when it senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not likely to occur. 14 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 21
    in this manual assume the following: • The drive is operated per this specification using DC power as defined in this manual (see Section 6.2). • Errors caused by host system failures are excluded the same cause are treated as 1 error for that block. Cheetah 15K.5 SAS Product Manual, Rev. E 15
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 22
    caused by drive malfunction. A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered an MTBF hit. 5.2.2 Preventive maintenance No routine scheduled preventive maintenance is required. 16 Cheetah 15K.5 SAS Product Manual, Rev
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 23
    failure occurs. Note. The drive's firmware monitors specific attributes for degradation over time but can't predict instantaneous drive failures. Each monitored attribute has been selected to monitor a specific set of failure PERF = 0 163 milliseconds Cheetah 15K.5 SAS Product Manual, Rev. E 17
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 24
    point is set at 68°C which is the maximum temperature limit according to the drive specification. The second trip point is user-selectable using the Log Select command. The reference temperature parameter in the temperature log page (see Table 1) can 18 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 25
    the drive fails the test, remove it from service and return it to Seagate for service. 5.2.6.1 DST failure definition The drive will failures. 5.2.6.2 Implementation This section provides all of the information necessary to implement the DST function on this drive. Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 26
    qualifies the drive to be returned to Seagate as a failed drive. A Drive Not Ready condition is reported by the drive under the new parameter block will be initialized as follows: 1. The Function Code field is set to the same value as sent in the DST command 20 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 27
    return information Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction any third-party repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty. Cheetah 15K.5 SAS Product Manual, Rev. E 21
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 28
    22 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 29
    start current margin added. ST3300655SS 3 Gbit mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.73 0.80 0.87 1.97 1.38 3.27 0.67 0.03 0.79 1.15 0.80 1.18 1.56 2.80 Cheetah 15K.5 SAS Product Manual, Rev. E 23
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 30
    97 1.15 3.34 0.70 0.03 0.80 0.89 0.82 0.91 1.58 2.48 Table 4: ST373455SS DC power requirements Voltage Regulation Avg idle current DCX Maximum starting current (peak DC) DC 3σ ( at nominal voltage. N (number of drives tested) = 6, 35 24 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 31
    are peak-to-peak measurements and apply at the drive power connector. +5V = 250 mV pp from ST373454SS and ST336754SS models are shown below in the following figures. Note: All times and currents are typical. See Tables 2, 3, and 4 for maximum current requirements. Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 32
    Figure 2. Typical ST3300655SS drive +12V current profile Figure 3. Typical ST3300655SS drive +5V current profile 26 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 33
    Figure 4. Typical ST3146855SS drive +12V current profile Figure 5. Typical ST3146855SS drive +5V current profile Cheetah 15K.5 SAS Product Manual, Rev. E 27
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 34
    Figure 6. Typical ST373455SS drive +12V current profile Figure 7. Typical ST373455SS drive +5V current profile 28 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 35
    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 (3 Gbit) DC current and power vs. input/output operations per second Cheetah 15K.5 SAS Product Manual, Rev. E 29
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 36
    , 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, DC current and power vs. input/output operations per second 30 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 37
    Power (watts) 0.800 8.00 0.600 6.00 0.400 4.00 0.200 2.00 0.000 0.0 0.00 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I/Os per Second Figure 10. ST373455SS (3 Gbit) DC current and power vs. input/output operations per second Cheetah 15K.5 SAS Product Manual, Rev. E 31
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 38
    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. Check Point 1.0" .5" Figure 11. Location of the HDA temperature check point 32 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 39
    be applied in the X, Y, or Z axis. The drive subjected to nonrepetitive shock not exceeding 120 Gs at a maximum duration of 0.5 msec (half sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis. Cheetah 15K.5 SAS Product Manual, Rev. E 33
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 40
    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. Z Y X X Z Y Figure 12. Recommended mounting 34 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 41
    office environment with minimal environmental control. 6.4.6 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years by replacing materials near circuitry with sulfide-free alternatives. Cheetah 15K.5 SAS Product Manual, Rev. E 35
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 42
    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 ( .18 MIN BLIND) 4.22 X 90 ( .166 X 90 ) 0.36 ( .014) DRIVE CENTER LINE 3.50 +/- .38 (.138 +/- .015) 0.13 (.005) 0.13 (.005) 0.25 (.010
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 43
    are also reallocated, that is, reassigned to a new place on the medium and the location listed in SCSI commands supported by the drive are described in the SAS Interface Manual. Also, more information on the drive Error Recovery philosophy is presented in the SAS Interface Manual. 7.2 Drive
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 44
    Therefore, each command's total recovery time is subject to the recovery time limit. Note: A recovery time limit of 0 will use the drive's default value of FF FF. Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01. 38 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 45
    performed by the drive. Status returned by the drive to the initiator is described in the SAS Interface Manual. Status reporting plays drive is idle. In RAID arrays, BMS allows hot spare drives to be scanned for defects prior to being put into service by the host system. On regular duty drives
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 46
    are marked for DAR during read operations performed by the drive. When a write command is received for an LBA 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 40 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 47
    as long as the I/O cable length does not exceed 4 meters (13.1 feet). Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host system. This connects the drive directly to your system's SAS connector. The SAS connector is normally located on
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 48
    the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment. If forced air is determined to to side) Figure 15. Air flow Above unit Under unit 42 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 49
    of mounting the drive in the host equipment. Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground. This is the system designer's and integrator's responsibility. Cheetah 15K.5 SAS Product Manual, Rev. E 43
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 50
    44 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 51
    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
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 52
    drives support: • Concurrent port transfers-The drive supports receiving COMMAND, TASK management transfers on both ports at the same time. • Full duplex-The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports. 46 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 53
    by Cheetah drives. Table 8: Commands supported by Cheetah 15K.5 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 IMMED bit supported VS (vendor specific) Inquiry
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 54
    -Specific Port page (19h) Power Condition page (1Ah) Rigid Disc Drive supported) 3Ch Y Read Capacity 25h Y Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read Extended 28h Y DPO bit supported Y FUA bit supported Y Read Long 3Eh Y 48 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 55
    ) Firmware Download option (modes 5, 7, Ah and Bh supported) [3] Write Extended DPO bit Command code 07h 1Ch 17h 57h 03h 16h 56h 01h 31h 30h 32h 0Bh 2Bh 1Dh 33h 1Bh 35h 00h 2Fh 0Ah 2Eh 3Bh 2Ah Supported Y Y Y Y Y Y Y Y Y Y Y Y N Y Y N Y N N N Y Y Y Y Y N Y Y Y Y Y Y Y Y Y Y Y Y Cheetah 15K.5 SAS
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 56
    can result in firmware corruption. This usually makes the drive inoperable. [3] Reference Mode Sense command 1Ah for mode pages supported. [4] Y = Yes. Command is supported. N = No. Command is not supported. A = Support is available on special request. 50 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 57
    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: Bytes 0-15 16-31 32-47 48-63 64-79 80-95 96-111 112-127 128-143 Cheetah 15K.5 SAS inquiry data Data (hex) 00 00 xx** 12 8B 00
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 58
    the drive in response to the Mode Sense command pages for SCSI implementation (see the SAS Interface Manual ). Definitions: DEF = Default value. Standard OEM drives are shipped configured this way. CHG = Changeable bits; indicates if default value is changeable. 52 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 59
    ff ff ff 06 ff 00 00 DEF 80 06 00 00 0f 00 00 00 CHG 80 06 b7 40 0f 00 00 00 Cheetah 15K.5 SAS Product Manual, Rev. E 53
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 60
    ff ff 06 ff 00 00 DEF 80 06 00 00 0f 00 00 00 CHG 80 06 b7 40 0f 00 00 00 54 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 61
    9.3.2.3 ST373455SS Mode Sense data MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 08 8b b9 98 00 00 02 00 MODE ff ff ff 06 ff 00 00 DEF 80 06 00 00 0f 00 00 00 CHG 80 06 b7 40 0f 00 00 00 Cheetah 15K.5 SAS Product Manual, Rev. E 55
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 62
    offset bytes Table 11: Miscellaneous status Supported Y Y Y Y Y Y Y Y N N Status Good Check condition Condition met/good Busy Intermediate/good Intermediate/condition met/good Reservation conflict Task set full ACA active ACA active, faulted initiator 56 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 63
    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 16. Physical interface Cheetah 15K.5 SAS Product Manual, Rev
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 64
    0.05 15.875 15.875 1.27 (14X) 1.27 (6X) 5.08 B 0.84 0.05 (22X) 0.15 B 4.90 0.08 P15 P1 S1 S7 CL OF DATUM B Figure 17. SAS connector dimensions 58 Cheetah 15K.5 SAS Product Manual, Rev. E
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    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 connector manufacturers. The SAS device connector is illustrated in Figures 17 and 18. Cheetah 15K.5 SAS Product Manual, Rev. E 59
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 66
    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 P15* 12 Volts 60 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 67
    RY Figure 19. 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 off for 0.5 seconds) Toggles on/off Toggles on/off Cheetah 15K.5 SAS Product Manual, Rev. E 61
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 68
    drive SAS differential signals comply with the intra-enclosure (internal connector) requirements of the SAS standard. Table 15 defines the general interface characteristics. Table 15: General interface population has a range of ± 7 standard deviations. 62 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 69
    time (in UI) Outline of eye mask before adding sinusoidal jitter Outline of eye mask after adding sinusoidal jitter Figure 21. Receive tolerance eye mask Cheetah 15K.5 SAS Product Manual, Rev. E 63
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 70
    (log/log plot) FNOM = 1.5 x 10 9 for 1.5 Gbps FNOM = 3.0 x 10 9 for 3.0 Gbps 1.0 0.1 0 FNOM / 25,000 FNOM / 1,667 Frequency (in kHz) Figure 22. Sinusoidal jitter mask 64 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 71
    -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 the burst times and the idle times of an OOB signal. Cheetah 15K.5 SAS Product Manual, Rev. E 65
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 72
    < 10-12 and the average of the individual events is the measure of the asymmetry. Jitter peak-to-peak measured < (maximum total jitter - |Asymmetry|). 66 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 73
    SAS Interface Manual for definition of the required pattern on the physical link and information regarding special considerations for scrambling and running disparity. 9.5.2.3.4 Impedance specifications 32.5 ± 7.5 100 ± 15 5 32.5 ± 7.5 100 ± 15 5 100 max Cheetah 15K.5 SAS Product Manual, Rev. E 67
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 74
    , shall be used to determine the impedance. e The receiver termination impedance specification applies to all receivers in a TxRx connection and covers all time points or ground plane). 9.5.2.4.1 Transmitter characteristics The drive are D.C. coupled. 68 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 75
    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. The TCTF is the points 10 nF 50 ohm Tx- SAS internal connector Figure 23. Compliance interconnect test load Cheetah 15K.5 SAS Product Manual, Rev. E 69
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 76
    length test load. 10 nF 50 ohm Tx+ Probe points 10 nF 50 ohm Tx- SAS internal connector Figure 24. Zero-length test load Figure 25 shows an ISI loss example at Sample compliance interconnect Frequency (GHz) 1.5 Figure 26. ISI loss example at 1.5 Gbps 70 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 77
    drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equivalent impedance as specified in table 20. The receiver operates within a BER of 10-12 when a SAS jitter reduces the eye opening in both voltage and time. Cheetah 15K.5 SAS Product Manual, Rev. E 71
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 78
    72 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 79
    specifically for OEMs and distributors. It provides self-service access to critical applications, personalized content and the tools that allow our partners to manage their Seagate account functions. Submit pricing requests, orders and returns through a single, password-protected Web interface
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 80
    East and Africa, go to the "Contact Us" page on www.seagate.com. Asia/Pacific Support Services For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific, go to the "Contact Us" page on www.seagate.com. 74 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 81
    drive failure 16 drive malfunction 16 drive mounting 36, 43 drive select 60 dual port support 46 E electrical description of connector 60 signal characteristics 61 specifications 23 electromagnetic compatibility 3 electromagnetic susceptibility 36 EMI requirements 3 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 82
    42 host equipment 43 hot plugging the drive 17 humidity 33 humidity limits 32 I Idle Read After Write 40 inquiry data 51 installation 41 guide 5 interface commands supported 47 error rate 15 errors 16 data, table 51, 53 mounting 43 holes 43 orientations 41 Cheetah 15K.5 SAS Product Manual, Rev. E
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 83
    SCSI (SAS) Interface Manual 1 shielding 3 shipping 21 shipping container 32 shock 33 and vibration 33 shock mount 43 signal characteristics 61 single-unit shipping pack kit 10 SMART 9, 17 SMP = 1 in Mode Select command 56 spindle brake 8 standards 3 start/stop time 12 Sulfur 35 support services
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 84
    not supported 05 45 Function reject 04 45 task set full status 56 technical support services 73 drive 21 U unformatted 9 Unrecoverable Errors 15 unrecovered media data 15 V vibration 33, 35 W warranty 21 Z zero latency read 56 zone bit recording (ZBR) 8 80 Cheetah 15K.5 SAS Product Manual
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 85
  • Seagate ST373455SS | Cheetah 15K.5 SAS Product Manual - Page 86
    Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100384784, Rev. E, Printed in USA
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Product Manual
Cheetah 15K.5 SAS
100384784
Rev. E
August 2007
ST3300655SS
ST3146855SS
ST373455SS