Seagate ST3146855LW Cheetah 15K.5 SCSI Product Manual

Seagate ST3146855LW Manual

Get Seagate ST3146855LW PDF manuals and user guides View all Seagate ST3146855LW manuals
Add to My Manuals
Save this manual to your list of manuals

Seagate ST3146855LW manual content summary:

  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 1
    Product Manual Cheetah 15K.5 SCSI ST3300655LW ST3146855LW ST373455LW ST3300655LC ST3146855LC ST373455LC 100384776 Rev. J May 2010
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 2
    877-PUB-TEK1(877-782-8651) to request permission. One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Quantitative usage examples for various applications are for illustrative purposes
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 3
    Contents 1.0 Seagate Technology support services 1 2.0 Scope 2 3.0 Applicable standards and Hot plugging Cheetah 15K.5 SCSI disc drives 16 6.2.4 S.M.A.R.T 16 6.2.5 Thermal monitor 18 6.2.6 Drive Self Test (DST 18 6.2.7 Product Power dissipation 26 Cheetah 15K.5 SCSI Product Manual, Rev. J i
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 4
    error management 35 8.1 Drive internal defects 35 8.2 Drive error recovery miscellaneous features supported 55 Synchronous data transfer 56 10.5.1 Synchronous data transfer periods supported 56 10 drive SCSI timing 72 10.11 Drive activity LED 74 ii Cheetah 15K.5 SCSI Product Manual, Rev.
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 5
    15. Figure 16. Figure 17. Typical ST3300655LW drive +5 V LVD current profile 25 ST3300655LC DC drive physical interface (68-pin J1 SCSI I/O connector 57 LC model drive drives 61 Nonshielded 68-pin SCSI device connector used on LW drives 62 Nonshielded 80-pin SCSI SCA-2 connector used on LC drives
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 6
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 7
    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 Cheetah 15K.5 SCSI Product Manual
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 8
    Technology LLC, Cheetah® 15K.5 SCSI disc drives. Cheetah 15K.5 SCSI drives support the small computer system interface (SCSI) as described in the ANSI SCSI SPI-4 interface specifications to the extent described in this manual. The SCSI Interface Manual (part number 100293069) describes general SCSI
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 9
    Seagate standards as noted in the appropriate sections of this Manual, the Seagate Parallel SCSI Interface Manual, part number 100293069, and the SCSI Commands Reference Manual, part number 100293068. The Cheetah 15K.5 SCSI disc drive is a UL recognized component per UL1950, CSA certified to CSA
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 10
    C-Tick Marking. The drive was tested in a microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display Framework requirements of Australia's Spectrum Management Agency (SMA). Korean MIC Korea. This drive has been tested materials for the disc drives documented in this publication.
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 11
    Reference documents Cheetah 15K.5 SCSI Installation Guide Seagate P/N 100384777 Safety and Regulatory Agency Specifications Seagate P/N 75789512 SCSI Commands Reference Manual Seagate P/N 100293068 Parallel SCSI Interface Product Manual Seagate P/N 100293069 Applicable ANSI small computer
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 12
    drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface specifications to the extent described in this manual attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. The drive contains no
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 13
    DST) • Supports SCSI bus fairness 4.2 Media characteristics The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection. Cheetah 15K.5 SCSI Product Manual, Rev
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 14
    commands • Background processing of queue • Supports start and stop commands (spindle stops spinning 88BB998 867E068 85E4254 8500BB2 83342E0 82040CBh 2. Seagate drives also may be used at the maximum available guaranteed capacities listed above. Using the drives in this manner gives the absolute
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 15
    Interface Manual. Refer to the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall Factory installed accessories OEM Standard drives are shipped with the Cheetah 15K.5 Installation Guide, part number 100384777, and
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 16
    zone) rpm msec * One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. ** Rounded specified. Refer to the Parallel SCSI Interface Manual for additional timing details. 10 Cheetah 15K.5 SCSI Product
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 17
    of temperature, voltage, and horizontal orientation as measured on a representative sample of drives. 2. Access to data = access time + latency time. 5.2.2 Format command sector has been relocated. [3] Assumes system ability to support the rates listed and no cable loss. Cheetah 15K.5 SCSI Product
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 18
    5.5.2. All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Table 10. 5.5 Cache operation Note. Refer to the SCSI Interface Manual for more detail concerning the cache bits. Of the 16 Mbytes physical buffer space in the
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 19
    drive the drive responds as it does for drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive drive does not overwrite data drive the drive to write the drive. bit = 0 enables prefetch. The drive does not use the Max Prefetch
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 20
    reallocated. 6.1 Error rates The error rates stated in this specification assume the following: • The drive is operated per this specification using DC power as defined in this manual (see Section 7.2). • Errors caused by host system failures are excluded from error rate computations. • Assume
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 21
    ) are classified as drive failures. 6.2 Reliability and service You can enhance the reliability of Cheetah 15K.5 SCSI disc drives by ensuring that the drive receives adequate cooling. No routine scheduled preventive maintenance shall be required. Cheetah 15K.5 SCSI Product Manual, Rev. J 15
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 22
    removal, except on the device being changed Seagate Cheetah 15K.5 SCSI disc drives support all four hot plugging cases. Provision shall be made by the system During drive insertion, care should be taken to avoid exceeding the limits stated in Section 7.4.4, "Shock and vibration" in this manual.
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 23
    Forcing S.M.A.R.T. will reset the timer so that the next scheduled interrupt will be two hours. The drive can be interrogated by the host to determine the time remaining before the next scheduled measurement and and decremented (not to exceed Cheetah 15K.5 SCSI Product Manual, Rev. J 17
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 24
    the temperature exceeds the specified limit in compliance with the SCSI standard. The drive temperature is reported in the FRU code field of mode sense data. You . If the drive fails the test, remove it from service and return it to Seagate for service. 18 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 25
    DST. The channel and servo parameters are not modified to test the drive more stringently, and the number of retries are not reduced. All bytes 1, bits 5, 6, and 7. Refer to the SCSI Commands Reference Manual, part number 100293068, for additional information about invoking DST. 6.2.6.2.3 Short and
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 26
    of the log page. Existing data will be moved to make room for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are more than 20 parameter blocks, the least recent and conditions of Purchase for Seagate products. 20 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 27
    by the Seagate-approved package label. Shipping a drive in a non-approved container voids the drive warranty. Seagate repair centers may refuse receipt of and return information Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 28
    and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector. The tables show LVD mode +12 V ±5% [2] 0.80 0.76 1.94 1.07 3.35 0.57 0.03 0.69 1.18 0.70 1.23 1.38 2.90 22 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 29
    at nominal voltage. Number of drives tested = 6, 35 Degrees drive signifies that its power-up sequence has been completed and that the drive Option is enabled and the drive has not yet received a idle, the drive heads are relocated drives from a common supply, careful consideration for individual drive
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 30
    the backplane for LC models. See Section 9.1 for pin selection information. To delay the motor until the drive receives a Start Unit command, enable the Enable Remote Motor Start option on the J6 connector on LW Table 3 for maximum current requirements. 24 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 31
    Figure 1. Typical ST3300655LW drive +12V LVD current profile Figure 2. Typical ST3300655LW drive +5 V LVD current profile Cheetah 15K.5 SCSI Product Manual, Rev. J 25
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 32
    operations, refer to the following I/O rate curve (see Figure 3). 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 ) Power (watts) 5Vo lt A 12 Vo lt A Watts 26 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 33
    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 ) Power (watts) 5Vo lt A 12 Vo lt A Watts Cheetah 15K.5 SCSI Product Manual, Rev. J 27
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 34
    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 Power (watts) 5Vo lt A 12 Vo lt A Watts 28 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 35
    AFR. Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 36°F ( -1,000 to +10,000 feet (-305 to +3,048 meters) Cheetah 15K.5 SCSI Product Manual, Rev. J 29
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 36
    shock shall apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives. The drive subjected to nonrepetitive shock not exceeding 75 Gs at a maximum duration of 11 mm) 42 in (1067 mm) 36 in (914 mm) 30 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 37
    Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent. Z Y X X Z Y Figure 7. Recommended mounting Cheetah 15K.5 SCSI Product Manual, Rev. J 31
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 38
    shall apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives. The drive shall not incur physical damage or degraded performance as a result of continuous circuitry with sulfide-free alternatives. 32 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 39
    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 ± .010 6.73 ± .25 E D Figure 8. LW mounting configuration dimensions Cheetah 15K.5 SCSI Product Manual, Rev. J 33
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 40
    holes are 6-32 UNC 2B, three on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full max E D Figure 9. LC mounting configuration dimensions 34 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 41
    on host (initiator) defect management routines. 8.1 Drive internal defects During the initial drive format operation at the factory, Commands Reference Manual, which describes the Mode Select/Mode Sense Error Recovery parameters. The error recovery scheme supported by the drive provides a
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 42
    below the default setting could result in an increased unrecovered error rate which may exceed the value given in this product manual. A setting of zero (0) will result in the drive not performing error recovery. For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retry
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 43
    drive. Status returned by the drive to the Initiator is described in the SCSI Commands Reference Manual. Status reporting plays a role in the SCSI systems error management background functions to operate. BMS interrupts immediately to service host commands from the interface bus while performing
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 44
    locations on a subsequent write command. Sites are marked for DAR during read operations performed by the drive. When a write command is received for an LBA marked for DAR, the auto-reallocation process is , the sector is re-mapped to a spare location. 38 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 45
    instructions are provided by host system documentation or with any additionally purchased drive installation software. If necessary see Section 10 for Seagate support services telephone jumper plug types is shipped with the standard OEM drives. Cheetah 15K.5 SCSI Product Manual, Rev. J 39
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 46
    4 2 +5V N.C. Ground Drive Activity LED [4] Dashed area is optional host circuitry (external to the drive) connected to host supplied optional drive ID. Remote Switches Pins 2, 4, 6, and 8 are normally not grounded. They are driven low (ground) for 250 ms after a Reset or PWR ON to allow drive
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 47
    Drive Revision 2.0, Unitized Connector for Cabled Drives, signal assignments for auxiliary connectors. Voltage supplied by the drive. [4] Dashed area is optional host circuitry (external to the drive) connected to host external Drive Activity LED to J5 pin 8 (see Figure 10) and the drive's +5V
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 48
    after power up - Default setting. Drive spindle does not start until Start Unit On Entire drive is write protected. Off Drive is not by the drive is disabled. Off Drive checks for drives do not have terminator circuits on the drive. Note. J6 does not exist on the LC model and is supported
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 49
    host enclosure must provide heat removal 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 12. Air flow (suggested) Above unit Under unit Cheetah 15K.5 SCSI Product Manual, Rev. J 43
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 50
    that it can meet the shock and vibration specifications listed in this manual. 9.5 Grounding Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The equipment in which the drive is mounted is connected directly to the HDA and PCBA with no
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 51
    the Seagate Parallel SCSI Interface Manual and the SCSI Commands Reference Manual . 10.2 SCSI interface messages supported Table 7 lists the messages supported by the Cheetah 15K.5 SCSI family drives. Table 7: SCSI messages supported by Cheetah 15K.5 SCSI family drives Message name Abort Abort
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 52
    the SCSI Interface Product Manual). [2] Supports all options except qas_req and iu_req. Supported (Y = yes) (N = no) Y Y Y N Y Y Y N N Y 10.3 SCSI interface commands supported Table 8 following lists the SCSI interface commands that are supported by the drive. OEM standard drives are shipped set
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 53
    Table 8: Commands supported by Cheetah 15K.5 SCSI family drive (Continued) Command name Lock-unlock (1Ah) Command code 36h 4Ch 4Dh 15h 55h 1Ah Supported by SCSI-2/3 N Y Y N Y Y N N N Y Y Y N Y Y N N Y Y Y N Y Y Y Y Y Y [2] Y Y [2] Y Y Y Y Y Y Y N Y Y Cheetah 15K.5 SCSI Product Manual, Rev. J 47
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 54
    drive (Continued) Command name Rigid Disc Drive Geometry page (04h) Unit Attention page (00h) Verify Error Recovery page (07h) Xor Control page (10h) Mode Sense (10) (same pages as Mode Sense 1Ah) Prefetch Read Read Buffer (modes 0, 2, 3, Ah and Bh supported Send Diagnostics Supported Diagnostics
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 55
    1Bh 35h 00h 2Fh 0Ah 2Eh 3Bh Supported by SCSI-2/3 Y N Y Y Y Y Y Y Y Y Y Y 2Ah Y Y Y 3Fh Y 41h Y N N 52h N 50h N 51h N [1] The drive can format to any even number of in firmware corruption. This usually makes the drive inoperable. Cheetah 15K.5 SCSI Product Manual, Rev. J 49
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 56
    given in the SCSI Interface Product Manual, part number 100293069, Inquiry command section. Table 9: Cheetah 15K.5 SCSI family drive Standard Inquiry data Bytes Data serial number. [ ]3 Bytes 18 through 26 reflect model of drive. The table above shows the hex values for Model ST3300655LW. Refer
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 57
    values. Default values are hard coded in the drive firmware that is stored in flash EPROM nonvolatile memory on the drive PCBA. Default values can be the SCSI Commands Reference Manual). Definitions: SAV = Current saved value. DEF = Default value. Standard drives are shipped configured this
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 58
    CHG 80 06 f7 40 0f 00 00 00 READ CAPACITY DATA 22 ec b2 5b 00 00 02 00 52 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 59
    00 CHG 80 06 f7 40 0f 00 00 00 READ CAPACITY DATA 11 17 73 2f 00 00 02 00 Cheetah 15K.5 SCSI Product Manual, Rev. J 53
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 60
    CHG 80 06 f7 40 0f 00 00 00 READ CAPACITY DATA 08 8b b9 97 00 00 02 00 54 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 61
    SCSI bus conditions supported by the drive are listed below. These conditions cause the SCSI device to perform certain actions and can alter the SCSI bus phase sequence. Other miscellaneous operating features supported are also listed here. Refer to the Parallel SCSI Interface Manual and the SCSI
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 62
    be used by the drive and the initiator is established by an exchange of messages during the Message Phase of operation. See the section on message protocol in the Parallel SCSI Interface Manual and SCSI Commands Reference Manual. 10.5.1 Synchronous data transfer periods supported In the following
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 63
    and connector LW model drives receive DC power through Contacts (20-14 AWG) AMP 60619-4 (Loose Piece) AMP 61117-4 (Strip) LC model drives receive power through the 80-pin I/O connector. See Tables 19 and 20. J1 Pin drive physical interface (68-pin J1 SCSI I/O connector) Cheetah 15K.5 SCSI Product
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 64
    respond in an acceptable manner (per applicable SCSI Standards) to reject newer Ultra320 protocol extensions that they don't support. The drives documented in this manual support single-ended and low voltage differential physical interconnects (hereafter referred to as SE and LVD, respectively) as
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 65
    Table 16 shows the interface transfer rates supported by the various drive models defined in this manual. Table 16: Interface transfer rates supported Interface type/ drive models SE ST3300655LW/LC ST3146855LW/LC ST373455LW/LC LVD ST3300655LW/LC ST3146855LW/LC ST373455LW/LC Maximum transfer rate
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 66
    , since the power-carrying conductors on the 80-conductor interface were not intended to support a series of drives. To insure that both drive connector and host equipment mating connector mate properly, both drive connector and host equipment mating connector must meet the provisions of "SFF-8451
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 67
    5-175475-9 Hot plug version (with ground guide-pin) 787311-1 with polarization 787311-2 without additional information call Amp FAX service at 1-800-522-6752. "LW" Model Drive Terminator [7] [6] 2 through 8 has the very lowest priority). [6] Last drive on the daisy chain. [7] Open-end type 68
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 68
    .71) .840 - .005 (21.34) Pos. 2 .767 (19.48) .083 +-.0.00012dia (2.1) Trifurcated Pins (4 places) Figure 16. Nonshielded 68-pin SCSI device connector used on LW drives 62 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 69
    1 1.27 (.05) Typ X CL of Datum Y Pin 40 Grounding Pins Pin 41 Pin 80 Figure 17. Nonshielded 80-pin SCSI SCA-2 connector used on LC drives Back View Cheetah 15K.5 SCSI Product Manual, Rev. J 63
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 70
    Reserved GND -ATN GND -BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O -DB8 -DB9 -DB10 -DB11 Notes [ ]: See page following Table 20. 64 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 71
    -DB6 -DB7 -DBP Ground Ground TermPwr TermPwr Reserved Ground -ATN Ground -BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O -DB8 -DB9 -DB10 -DB11 Cheetah 15K.5 SCSI Product Manual, Rev. J 65
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 72
    2 5 V GND 5 V GND ACTIVE LED OUT [4] [9] DLYD-START [6] [9] [12] SCSI ID (1) [7] [9] [12] SCSI ID (3) [7] [9] [12] Notes [ ]: See page following Table 20. 66 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 73
    +DB12 MATED 2 5 V GND 5 V GND ACTIVE LED OUT [4] [9] DLYD_START [6] [9] [12] SCSI ID (1) [7] [9] [12] SCSI ID (3) [7] [9] [12] Notes [ ]: See page following this table. Cheetah 15K.5 SCSI Product Manual, Rev. J 67
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 74
    drive activity for host front panel hard drive drive. [8] GND provides a means for differential devices to detect the presence of a single ended device on the bus. Drive tied high by the drive circuitry. The preferred electrical drives drive interface the drive interface circuits Drives drives drives drive
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 75
    receiver circuits depends on several factors. Table 21 lists the maximum lengths allowed for different configurations of drive usage. These values are from the SPI documents. All device I/O lines must have equal to connection to the mainline SCSI bus. Cheetah 15K.5 SCSI Product Manual, Rev. J 69
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 76
    in Table 23. Table 22: Shielded round twisted-pair cables-into a multi-drive backplane Differential Cable impedance description , nominal Singleended impedance, nominal Singleended capacitance, maximum 1.52 meters 3.04 meters (5.0 ft) (10.0 ft) 70 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 77
    drives are designed to be plugged into a backpanel connector without cabling. 10.9 Terminator power LW drives You can configure terminator power from the drive show how to place jumpers for this configuration. LC drives These drives cannot furnish terminator power because no conductors in the
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 78
    SCSI timing Table 24: Disc drive SCSI timing These values are not current Cheetah 15K.5 SCSI values, but are listed for information only Command Dependent Command Dependent 0.98 μs 0.51 μs 4.00 μs 0.79 μs 0.04 μs 0.58 μs 0.12 μs 0.12 μs 0.12 μs 0.12 μs 72 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 79
    . [2] Maximum SCSI asynchronous interface transfer rate is given in Section 5.2.3 of this manual. [3] Synchronous Transfer Period is determined by negotiations between an Initiator and a Drive. The Drive is capable of setting periods as given in Section 10.5. See also the Synchronous data transfer
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 80
    activity LED The following table provides drive activity LED status. Table 25: Drive activity LED status Spindle status Command status LED status Spinning up with DC power applied N/A Spun toggles on/off on each cylinder boundary Toggles on/off 74 Cheetah 15K.5 SCSI Product Manual, Rev. J
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 81
    12 bulkhead connector 58 bus device reset message 51 Cheetah 15K.5 SCSI Product Manual, Rev. J bytes per sector 49 C cable 57 cache 12 cache buffer write data 13 Canadian Department of Communications 3 capacities 9 capacity, drive, programmable 9 CE Marking 4 changeable bit 51 changeable value 51
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 82
    management 35 defects 35 Deferred Auto-Reallocation 38 delayed motor start option 22, 23, 68 delayed start 42 differential I/O circuit 42 differentiating features 6 dimensions 33 disc rotational speed 10 drive 32 drive activity 68 drive activity LED 74 drive hard guide 9 installation instructions
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 83
    56, 58 power 23, 42 power connector 22, 24 power control switch 12 power dissipation 26 power distribution 3 power sequencing 24 Cheetah 15K.5 SCSI Product Manual, Rev. J 77
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 84
    maintenance 14, 15 product data page 50 programmable drive capacity 9 R radio interference regulations 3 RCD bit supported 46 SCSI interface connector 56 SCSI interface data 11 SCSI Interface Product Manual 3, 5, 6 SCSI systems error 37 SCSI systems error management 37 Seagate support service
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 85
    bulb temperature 29 wide Ultra160 SCSI interface 6 WP jumper 42 write protect 42 write retry count 35 Z zoned bit recording (ZBR) 7 Cheetah 15K.5 SCSI Product Manual, Rev. J 79
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 86
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 87
  • Seagate ST3146855LW | Cheetah 15K.5 SCSI Product Manual - Page 88
    Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100384776, Rev. J
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
Product Manual
Cheetah 15K.5 SCSI
100384776
Rev. J
May 2010
ST3300655LW
ST3146855LW
ST373455LW
ST3300655LC
ST3146855LC
ST373455LC