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Suche Jumper-Belegung für HP 0950-2168 SCSI-HD

  • Hallo,


    mein A590 wollte nicht mehr ... die Platte ist kaputt. Da ich gelesen habe, dasss der A590 auch einen SCSI-Anschluß hat, habe ich mal meine alte SCSI-Platte hervorgekramt. Es ist eine HP 0950-2168. Leider habe ich dazu kein Handbuch und kann so nicht jumpern (Ich hatte irgendwann mal alle Jumper abgezogen, weil ich die anderswo brauchte ...)


    Tante Guugel spuckt nix aus ---- wo kann ich sonst noch fündig werden?


    CU,
    A500Man

  • Ja, wie vermutet, ist es eine Original-Hewlett-Packard-Festplatte mit der Modellbezeichnung C2235 S, also die Narrow-Variante, die auch zur A590 passt. Die Variante C2235 SD hätte nämlich nicht gepasst und hätte bei Anschluss die A590 verbaucht beschädigen können.


    Damit müsstest Du jetzt vermutlich weiterkommen.


    Auf jeden Fall eine sehr schöne und recht seltene Festplatte.


    Noch ein Tipp: Die Festplatte setzt etwa 10 W im Idle-Modus um. Das heißt, für ein langes Leben sollte die nicht zu warm werden und je nach Gehäuse auch aktiv gekühlt werden. Beim Lesen/Schreiben sind es etwa 14 W, beim Hochlauf etwa 28 W.

  • Wie hast Du denn die anderen Jumper der Festplatte eingestellt?


    Ist die Terminierung korrekt? Die A590 hat vermutlich eine passive Terminierung an dem einen Ende des SCSI-Bus. Dann würde ich am anderen Ende die gleiche Art wählen. Oder beide Enden aktive Terminierung, wobei in diesem Fall die passive Terminierung wohl eher passen sollte.


    Wie ist Term-Power eingestellt? Nur eine Quelle darf die Terminatoren speisen!


    Ist die SCSI-ID auf dem Bus zwischen Host-Adapter (= A590) und Festplatte unterschiedlich?


    Wie ist die Paritätsfunktion eingestellt, aktiviert oder deaktiviert?

  • Also,


    • es ist im Moment nur der Jumper 4 (=spin-up) gesetzt
    • Die A590 ist nicht besonders eingestellt. Ich habe mir zu Testzwecken heute mal eine andere SCSI-Festplatte von einem Kumpel geliehen. Diese ist auch nur mein Jumper "auto-spin-up" jepumpert. Alle anderen Jumper sind leer. Und die A590 erkennt diese Platte.
    • Die Installations-Software der A590 sucht alle möglichen SCSI-Kombinationen durch (0 bis 6, glaube ich). Er hängt aber schon bei 0.
    • Term Power sagt mir nichts; wo stelle ich das ein? Ist das der vier-Pin-Jumper (im Bild rot umkreist)? AUf meiner Platte sind da zwei mal vier Pins (Gelb umkreist)
    • Paritätsfunktion ist nicht aktiviert, denn der Jumper 3 ist offen.

    Hilft das bei der Analyse?





    CU,
    A500Man

  • SCSI ist an der Stelle, die Hardware richtig einzustellen etwas kniffelig. Wenn die Einstellungen nicht stimmen, kann vieles passieren von nicht erkennen/funktioieren oder einfach nur instabil sein.
    Term-Power ist davon eins und ist die Stromversorgung der Terminatoren am Bus. SCSI gibt da sehr genaue Regeln vor, wie das einzustellen ist.


    Ja, die rot eingekreisten haben mit der Terminierung zu tun in dem Bild. Daneben sind die passiven Widerstandsnetzwerke zu sehen.
    An Hand des Foto können wir aber auch sehen, dass die Elektronik zu Deiner Festplatte nicht zu dem Bild darüber passt.
    Auf dem Foto sind nämlich keine Widerstandsnetzwerke sondern Terminator-IC's (Motorola MCCS142233FN, 2 Stück, http://www.farnell.com/datasheets/64860.pdf). Die ersetzen die Widerstandsnetzwerke mit gleicher Funktion. Die IC's sind also keine aktive Terminierung wie ich das im Datenblatt gelesen habe.


    Somit passt die Beschreibung nicht zu Deiner Festplatte.
    Ich kann leider nicht auf den Fotos erkennen, was an den Stiftleisten dransteht, die unten links im Foto zu sehen sind. Steht da J4 und J5?
    Wenn die Beschreibung unten passt, würde ich folgendes versuchen:
    -------------+-------------------------------------------------------
    J5 1-2 CLOSED|Initiator supplies +5V input to SCSI connector pin 26
    J4 1-2 OPEN |for on-board terminators.
    J4 3-4 CLOSED|
    -------------+-------------------------------------------------------
    Dabei versorgt die A590 die Term-Power für sich selbst, den SCSI-Bus und Termnatoren auf der HP-Platte. So verstehe ich zumindest die Beschreibung.


    Am Ende habe ich noch eine Beschreibung gefunden (Quelle: http://arvutimuuseum.ee/th99/h/txt/1254.txt). Du kannst nochmal schauen, ob die vielleicht besser zu Deiner Festplatte passt.


    Parität sollte sowohl an der A590 als auch an der Festplatte gleich eingestellt sein. Das kannst Du ja mal mit der geliehenen Festplatte vergleichen.


    Hast Du die Gelegenheit und kannst die Hewlett-Packard-Festplatte mal an einem PC mit SCSI-Host-Bus-Adapter prüfen? Das würde ich als erstes versuchen, um sicher zu sein, dass die Festplatte von HP funktioniert.



    H P C 2 2 3 5 S HEWLETT PACKARD
    NO MORE PRODUCED Native| Translation
    ------+-----+-----+-----
    Form 3.5"/HH Cylinders 1546| | |
    Capacity form/unform 422/ MB Heads 9| | |
    Seek time / track 12.6/ 3.0 ms Sector/track | | |
    Controller SCSI2 SINGLE-ENDED Precompensation
    Cache/Buffer 64 KB STATIC RAM Landing Zone
    Data transfer rate 2.200 MB/S int Bytes/Sector
    10.000 MB/S ext SYNC
    Recording method RLL 2/7 operating | non-operating
    -------------+--------------
    Supply voltage 5/12 V Temperature *C 5 50 | -40 65
    Power: sleep W Humidity % 8 80 | 5 90
    standby W Altitude km -0.305 3.048| -0.305 15.240
    idle 10.0 W Shock g 10 | 50
    seek 11.8 W Rotation RPM 3600
    read/write W Acoustic dBA 33
    spin-up 28.0 W ECC Bit 144,REED SOLOMON
    MTBF h 150000
    Warranty Month 60
    Lift/Lock/Park YES Certificates CSA,IEC950,TUV,UL1950,VDE



    **********************************************************************
    L A Y O U T
    **********************************************************************
    HEWLETT HP C2230 SERIES TECHNICAL REFERENCE MANUAL 5960-0113, 6.1991



    Single-Ended
    +---------------------------------------------------------+
    | J5 1-+1-+J4|XX
    | | || | |XX
    | 4-+4-+ |XX
    | |XX I
    | |XX N
    | |XX T
    | |XX E
    |10+Option |XX R
    || |Pinset |XX F
    || | |XX A
    || | |XX C
    || | |XX E
    || | |1X
    |1-+ |
    ++ |XX
    ++LED |XX Power
    +---------------------------------------------------------+ 1








    Front View
    +------------------------------------------------------+
    | |
    |LED Option Pinset |
    ++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-------------------------+
    |+-+ +1+2+3+4+5+-+6+7+-+8+9+10 |





    Rear View
    +------------------------------------------------------+
    | |
    | SCSI Connector Power |
    +--------------------- ----------------------1---------+
    |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXX |
    4 3 2 1







    Differential
    +---------------------------------------------------------+
    | 1-+J4|XX
    | | | |XX
    | 4-+ |XX
    | |XX I
    | |XX N
    | |XX T
    | |XX E
    |10+Option |XX R
    || |Pinset |XX F
    || | |XX A
    || | |XX C
    || | |XX E
    || | |1X
    |1-+ |
    ++ |XX
    ++LED |XX Power
    +---------------------------------------------------------+ 1





    Front View
    +------------------------------------------------------+
    | |
    |LED Option Pinset |
    ++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-------------------------+
    |+-+ +1+2+3+4+5+-+6+7+-+8+9+10 |





    Rear View
    +------------------------------------------------------+
    | |
    | SCSI Connector Power |
    +--------------------- ----------------------1---------+
    |XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXX |
    4 3 2 1






    **********************************************************************
    J U M P E R S
    **********************************************************************
    HEWLETT HP C2230 SERIES TECHNICAL REFERENCE MANUAL 5960-0113, 6.91



    Jumper Setting
    ==============



    Option Pinset
    -------------




    SCSI ID -----------------------+
    Sync Spindle ----------------+ |
    Auto-Spin-Up -----------+ | |
    Parity ---------+ | | |
    SDTR -------+ | | | |
    Unit Attention -----+ | | | | |
    Write Protect ---+ | | | | +++ +-+-+
    O O O O O o O O o O O O
    O O O O O o O O o O O O
    1 2 3 4 5 6 7 8 9 10




    Pins 1 Write Protect
    --------------------
    When shorted, the entire drive is write protected. When open, the
    Write Protect function is enabled and disabled with bit 7 of the
    Mode Select command control byte, and the Write Protect status is
    indicated by the WP bit in the Mode Sense parameter list header.




    Pins 2 Unit Attention
    ---------------------
    Controls the Unit Attention function



    OPEN Enable Unit Attention
    CLOSED Inhibit Unit Attention




    Pins 3 SDTR Synchronous Data Transfer Request
    ---------------------------------------------
    When shorted, the drive will initiate an SDTR message at power-on and
    RESET. When open, the drive will not initiate an SDTR message. The
    drive will respon to a host-initiated SDTR message whether this pin-
    set is open or shorted.




    Pins 4 Parity
    -------------
    When shorted, the disk drive checks parity on commands and data. When
    open, the disk drive does not check for parity. Parity bits are
    generated whether this pin-set is open or shorted.




    Pins 5 Auto Spin-Up
    -------------------
    OPEN Drive will not spin up until Initiator sends Start Unit
    Command
    CLOSED Drive will spin up automatically at Power-On



    When not in the auto spin up mode the drive will return "Not Ready"
    to all commands except REQUEST SENSE, INQUIRY, RESERVE, RELEASE, and
    START UNTI until the drive is ready for access.




    Pins 6 and 7 Synchronized Spindle
    ----------------------------------
    Input/Output pins for the sync signal. Also routes the sync signal to
    pin 29 of the SCSI connector.



    6 = CLOSED; 7 = OPEN
    Pin-set 6, upper pin, is sync output in Master Mode, or sync input in
    Slave Mode. Lower pin is connected to ground. NOTE: when pinset 7 is
    is open, pinset 6 MUST be shorted in order to connect pin 29 of the
    SCSI connector to ground.



    6 = OPEN; 7 = CLOSED
    Connects sync signal line to pin 29 of SCSI connector. Pin 29 then
    becomes sync output in Master Mode, or sync input in Slave Mode.
    NOTE: When pinset 7 is shorted, pinset 6 MUST be open.




    Pins 8, 9, 10 SCSI Adress
    -------------------------
    +----------+-----------------------+
    | SCSI | Pins |
    | Adress | 8 | 9 | 10 |
    +----------+-------+-------+-------+
    | 0 | OPEN | OPEN | OPEN |
    | 1 | OPEN | OPEN | CLOSED|
    | 2 | OPEN | CLOSED| OPEN |
    | 3 | OPEN | CLOSED| CLOSED|
    | 4 | CLOSED| OPEN | OPEN |
    | 5 | CLOSED| OPEN | CLOSED|
    | 6 | CLOSED| CLOSED| OPEN |
    | 7 | CLOSED| CLOSED| CLOSED|
    +----------+-------+-------+-------+



    The drive is shipped from the factory with shorting jumpers across
    all three pin-sets which sets up a SCSI Address of 7.



    Save any removed jumpers for future use.




    Terminator Power Source Options
    -------------------------------
    The single-ended drive is shipped with terminator resistor packs
    installed. When installing multiple drives on the SCSI channel, the
    resistors must be disconnected from all but the last drive in the
    chain. When the Terminator Enable jumper (J5, 1-2) is installed, the
    resistors are connected to the SCSI connector; when removed, the
    terminators are disconnected from the SCSI connector.



    SINGLE-ENDED DRIVES
    -------------------
    Terminator Enable jumper (J5, 1-2) must be installed to connect the
    termination resistors to the SCSI connector.



    J5 3-4 Reserved, must be open.



    SINGLE-ENDED DRIVES
    -------------+-------------------------------------------------------
    Jumper |Function
    -------------+-------------------------------------------------------
    J5 1-2 OPEN |Terminator Resistor Packs disabled. Terminator
    J4 1-2 OPEN |Resistors not connected TO SCSI Connector.
    J4 3-4 OPEN |Drive +5V not connected to on-board terminators or to
    |SCSI connector pin 26.
    |Initiator supplied +5V not connected to on-board
    |terminators.
    -------------+-------------------------------------------------------
    J5 1-2 CLOSED|Drive +5V connected to on-board terminators but not to
    J4 1-2 CLOSED|SCSI connector pin 26.
    J4 3-4 OPEN |
    -------------+-------------------------------------------------------
    J5 1-2 CLOSED|Initiator supplies +5V input to SCSI connector pin 26
    J4 1-2 OPEN |for on-board terminators.
    J4 3-4 CLOSED|
    -------------+-------------------------------------------------------
    J5 1-2 CLOSED|Drive +5V connected to on-board terminators and to SCSI
    J4 1-2 CLOSED|connector pin 26.
    J4 3-4 CLOSED|
    -------------+-------------------------------------------------------




    DIFFERENTIAL DRIVES
    ---------------------------------------------------------------------
    Terminator Enable and Reserved (J5) pinsets are NOT INSTALLED on
    standard drives.
    ---------------------------------------------------------------------
    Termination power pinset (J4 1-2) connects +5V to SCSI connector pins
    25 and 26 when shorted.
    ---------------------------------------------------------------------
    Termination power pinset (J4 3-4) is NOT USED; normally open.
    ---------------------------------------------------------------------






    **********************************************************************
    I N S T A L L
    **********************************************************************
    HEWLETT HP C2230 SERIES TECHNICAL REFERENCE MANUAL 5960-0113, 6/91



    Notes on installation
    =====================



    Protection From Mechanical Shock
    --------------------------------
    The mechanism is attached to the mounting frame(s) by pliable shock
    mounts that isolate it from mechanical shock when properly installed.
    Before installation, the disk drive is susceptible to damage from
    excessive shock and vibration during shipping and handling. Dropping
    a drive almost always causes immediate damage, but setting a drive
    down too hard may shorten its operational life. The damage can be
    hidden, and can reduce the life of the drive, or cause unexplained
    failure to occur at a later date.




    Physical Mounting
    -----------------
    Typically, the disk drive is fastened directly to a chassis with four
    no. 6/32 screws.



    There are twelve (12) threaded mounting holes (for no. 6/32 threads)
    on the disk drive: four on each side, and four on the bottom.



    Use the following guidelines to mount the disk drive:



    - Use 6/32 screws and torque them to 15 inch-pounds.



    - When mounted, the hardware must not protrude more than 4 mm (0.12
    inch) beyond the inside of the disk drive frame.



    - Maintain a minimum clearance of 0.06 in. (1.5mm) between any
    system structure and the top and all four sides of the disk drive.



    - Maintain a minimum clearance of 0.04 in. (1.0mm) between the
    bottom mounting surface and any PCA component.




    Airflow Requirements
    --------------------
    The disk drive must be installed such that the ambient air
    temperature surrounding the disk drive is maintained within the
    limits.



    Airflow is required to maintain disk drive performance and
    reliability. The disk drive can be cooled by forced air or by natural
    cooling. Forced air may be necessary if the disk drive is located
    within a cabinet or other enclosure. If forced air cooling is not
    used, the disk drive must be located such that internal heat is
    conducted away from the drive and no outside heat sources raise the
    operating temperatures above the limits.




    Cable Requirements
    ------------------
    The disk drive adheres to the cabling requirements and limitations
    set forth in the ANSI SCSI specifications.



    - Cables with a characteristic impedance of 100 ohms 10% are
    recommended for unshielded flat or twisted pair ribbon cable.



    - Cables with a characteristic impedance of 90 ohms 10% are pre-
    ferred for shielded cables.



    - To minimize discontinuities and signal reflections, do not use
    cables with different impedances on the same bus.



    - A minimum cable size of 28 AWG should be used to minimize noise
    effects and ensure proper distribution of terminator power.



    - Cables should be properly terminated.




    Recommended Mating Connectors
    -----------------------------



    SCSI Connector (single-ended) 3M 3425-6600



    DC Power AMP 1-480424-0



    LED Connector AMP 102107-3 (for AWG
    22-26 wire)



    Synchronized Spindle Connector AMP Housing 4-87456-9
    (*1)



    Shorting jumpers for option pinsets:



    2*1 shorting jumper: Dupont 86730-001
    2*2 connector housing: Dupont 69307-004 (*2)
    2*3 connector housing: Dupont 69307-006 (*2)
    2*5 connector housing: Dupont 69307-010 (*2)



    Notes:



    1. Requires a contact set; (For AWG 20-24 wire, use AMP 1-87309-4)



    2. Contact inserts required: (For AWG 26-30, use Dupont 77138-101;
    for AWG 32-36 wire, use Dupont 77139-101)




    Single-Ended Cable
    ------------------
    A 50-conductor flat cable or 25-signal twisted-pair cable should be
    used. Cable length should be equal to or less than 6.0 meters. This
    refers to internal and external cable length (except stubs).



    A stub length of no more than 0.1 meter is allowed off the main line
    interconnection within any connected device.




    Differential Cable
    ------------------
    A 50-conductor flat cable or 25-signal twisted-pair cable should be
    used. Cable length should be equal to or less than 25 meters. This
    refers to internal and external cable length (except stubs).



    A stub length of no more than 0.2 meter is allowed off the main line
    interconnection within any connected device.




    Power Distribution
    ------------------
    The +5 and +12 voltages provided by an external dc power supply are
    distributed to the spindle motor driver, actuator driver, analog
    amplifiers, and digital circuitry. A reset output alerts the other
    circuits when power-on occurs and when power is lost. Each circuit
    responds in a predefined manner to the reset condition.




    Look Ahead Reads
    ----------------
    The Look Ahead Read capability can improve the performance of a drive
    doing sequential READs by preloading the buffer with the data most
    likely to be requested with the next READ command. After a READ
    command is received by the controller, the drive seeks to the proper
    location and loads the requested data into the buffer. While that
    data is being transferred to the host, the Look Ahead Read function
    continues to read the remainder of the current track into the buffer.
    If, in subsequent READ requests, the host asks for the following
    blocks on the same track, they will already be in the buffer, and the
    data will be returned to the host without the delay of a media
    access. However, the controller is optimized to return any requested
    data to the host as fast as possible.



    If a new READ command requests data not contained in the buffer while
    the drive is performing a Look Ahead Read, the process is aborted,
    and the drive will immediately seek to the new location with no
    effect on access or transfer performance. Filling the track buffer
    with unrequested data has a lower priority than delivering requested
    data.




    RAM Buffer
    ----------
    The RAM Buffer contains 64-kilobytes of static RAM. All data
    transferred between the host and the disk must pass through the RAM
    buffer.




    Synchronized Spindle
    --------------------
    There are four synchronized spindle modes: Stand Alone, Slave,
    Master, and Master Control. The HP C2230 SCSI disk drives supports
    the Stand Alone, Slave, and Master modes, but not the Master Control
    mode.



    The power-on default for all drives is the Stand Alone mode. The
    Synchronized Spindle function is controlled with the RPL bits in
    parameter 04 (hex), byte 17 of the Mode Select command. In addition,
    byte 18 of the same Mode page provides for positional offset from the
    input sync signal.



    When the drive is in the Stand Alone mode:



    - It does not transmit a sync signal on the master line.
    - It does not receive an externally sourced slave sync input.



    When the drive is set to the Slave mode:



    - It does not transmit a sync signal.
    - It receives an externally sourced slave sync on the slave input
    line (or from the SCSI connector pin 29).



    When the drive is set to the Master mode:



    - It transmits a sync signal on both the master and slave lines
    (or from the SCSI connector pin 29).
    - It syncs internally to the same signal.





    Front Panel LED Indicator
    -------------------------
    The light emitting diode (LED) indicator on the front of the disk
    drive is an activity light that indicates the oerational status of
    the drive from power-on, through the self-test diagnostics, and into
    normal operation:



    1. ON When the disk drive is switched on, the LED normally stays on
    during the power-on sequence. The LED stays on while the
    spindle motor is being started until it is up to speed. If
    the LED is does not go out, a catastrophic failure has
    occured. The most probable cause is a failure of the drive
    electronics/controller PCA.



    2. FLASHING
    A flashing LED (approximately 1 Hz) insicates that the
    controller has failed all or a portion of the internal
    diagnostic tests.



    3. INTERMITTENT
    After the power-on diagnostics have completed, the LED
    functions as an activity light and will go on any time the
    disk drive is executing a command, reading, or writing. If
    the LED is off, the drive is idle.






    **********************************************************************
    F E A T U R E S
    **********************************************************************
    HEWLETT HP C2230 SERIES TECHNICAL REFERENCE MANUAL 5960-0113




    Product Description
    -------------------
    The HP C2230 SCSI single-ended and differential disk drives are
    reliable, low cost, high capacity, high performance, random access
    mass storage devices. Each product utilizes sputtered thin-film
    3.5-inch disks as storage media.



    The disk drive is orderable with or without a:



    - front bezel
    - front panel LED indicator
    - terminator resistor packs
    - differential interface




    Seek Time
    ---------
    +-----------------------------------+--------+
    |Track-to-Track msec. typ. | 3 |
    +-----------------------------------+--------+
    |Random Average msec. typ. | 12.6 |
    +-----------------------------------+--------+
    |Maximum Seek (1962 cyl) msec. typ. | 25 |
    +-----------------------------------+--------+
    |Head Switch Time msec. typ. | < 1.0 |
    +-----------------------------------+--------+
    |Latency (Average) msec. avg. | 8.33 |
    +-----------------------------------+--------+




    Assembly Descriptions
    ---------------------
    The assemblies in the disk drive include the head/disk assembly (HDA)
    and the drive/electronics printed-circuit assemly (PCA). The sealed
    HDA contains the mechanical and electromechanical assemblies of the
    disk drive. The drive/electronics PCA provides all electronic control
    over the HDA.




    Head/Disk Assembly
    ------------------
    The head/disk assembly (HDA) contains disks, heads, an actuator
    assembly, head interface circuits, atmospheric controls, vibration
    isolators, and a spindle assembly. A stainless steel baseplate and
    cover provide the supporting structure for these parts. The entire
    assembly is sealed and is not field repairable.




    Atmospheric Controls
    --------------------
    The atmospheric controls in the HDA consist of a breather system and
    a recirculating filter. The breather system equalizes air pressure
    within the HDA to ambient air pressure. A breather filter prevents
    contaminants from entering the HDA. A recirculating filter maintains
    the internal cleanliness of the HDA.




    Vibration Isolators
    -------------------
    The HDA is mounted on vibration isolators to protect it from high
    frequency external vibrations.




    Spindle Assembly
    ----------------
    The spindle assembly provides the mechanical mounting for the disks.
    The spindle rotates on a ball bearing system and is driven by an
    "in-hub" brushless DC motor. The drive current for the motor is
    supplied by the spindle drive circuit on the drive/electronics PCA.
    Three Hall-effect sensors, mounted on the spindle assembly, provide
    feedback signals to the spindle control electronics for speed and
    phase switching control.




    Defect List
    -----------
    The defect list consists of a 4-byte header followed by zero or more
    8-byte defect descriptors. Each descriptor consists of an 8-byte
    physical address or bytes from index address. Each address is bounds-
    checked by the Target. If any address is out of bounds, an ILLEGAL
    REQUEST Sense Key is generated, and the format operation is
    discontinued.




    Error Correction Code
    ---------------------
    The HP C2233/34/35 Series of disk drives use a Reed-Solomon error
    correction code (ECC) for detection and correction of data errors.
    During a write operation, the ECC function generates 18 bytes of ECC
    information, and writes the information into the ECC field as the
    sector is written. During a read operation, the controller generates
    an 18-byte code rom the data field being read, and compares it to the
    ECC field created during the write operation. If the 18-byte code
    differs from the ECC field, a data error is detected and the ECC
    field is used to correct the data.

  • Wie sind denn die Einstellungen der A590? Für die Festlatte alleine lässt sich das nicht pauschal beantworte, da es ein Zusammenspiel zwischen A590 und der HP-Platte ist.


    Ansonsten gäbe es als zweite Wahl noch die Möglichkeit, die Einstellungen der anderen Festplatte zu übernehmen, die Du testweise zur Verfügung hast.
    An dieser Stelle ist SCSI halt etwas kniffeliger als IDE-XT, was sonst in der A590 eingesetzt wird. Dafür ist es aber auch viel flexibler.


    Ich kann Dir, ohne die anderen Punkte zu wissen nur die grundsätzlichen Einstellungen sagen, was ich weiter oben ja schon geschrieben habe.


    Wenn Deine A590 noch die Grundeinstellung bzgl. der SCSI-Schnittstelle hat, kann hier vielleicht jemand anderes die Angaben zur A590 liefern. Ich habe leider aktuell keine.
    Damit wüsten wir, was an der HP-Festplatte einzustellen ist.


    Die entscheidenden Fragen beziehen sich auf folgende Punkte:
    a) Parität an der A590 ein- oder ausgeschaltet?
    b) SCSI-ID vom A590?
    c) Terminator in der A590 eingeschaltet? Wäre dann vermutlich ein passiver Terminator.
    d) Speist die A590 die Terminatoren auf dem SCSI-Bus oder nicht? Oder speist die A590 nur den eigenen Terminator und den Bus nicht?
    e) Arbeitet die A590 asynchron oder synchron?


    In diesen Punkten begründet sich die Flexibilität von SCSI, allerdings müssen die auch korrekt bzw. zusammenspielend eingestellt werden. Sonst funktioiert es auf dem SCSI-Bus nicht.