H P C 2 2 3 5 S ( D ) 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 DIFFERENTIAL Precompensation Cache/Buffer 64 KB STATIC RAM Landing Zone Data transfer rate 2.200 MB/S int Bytes/Sector 512 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 11.9 W Shock g 10 | 50 seek 13.6 W Rotation RPM 3600 read/write W Acoustic dBA 33 spin-up 29.8 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.