M A V E R I C K M V - 2 7 0 S C S I QUANTUM Native| Translation ------+-----+-----+----- Form 3.5"/SLIMLINE Cylinders 2856| | | Capacity form/unform 270/ MB Heads 2| | | Seek time / track 14.0/ 5.0 ms Sector/track | | | Controller SCSI2 SI/FAST Precompensation Cache/Buffer 128 KB SEGMENTED Landing Zone Data transfer rate 3.000 MB/S int Bytes/Sector 512 10.000 MB/S ext SYNC Recording method RLL 1/7 operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 4 50 | -40 65 Power: sleep 0.1 W Humidity % 8 85 | 5 95 standby 0.1 W Altitude km 3.000| 12.000 idle 3.7 W Shock g 10 | 70 seek 4.6 W Rotation RPM 3600 read/write 4.6 W Acoustic dBA 34 spin-up W ECC Bit ON THE FLY,REED SOLOMON MTBF h 300000 Warranty Month 24 Lift/Lock/Park YES Certificates CSA,FCC,IEC950,TUV,CISPR22... ********************************************************************** L A Y O U T ********************************************************************** QUANTUM MAVERICK 270/540S PRODUCT MANUAL 81-106845-01, 6/20/1994 +---------------------------------------------------------+ | +-+ HDA J13 *** +-+-+-+ | +-| | Connector *** +-+-+-+ ++ |XX +-| | on Cable A0 A1 A2 || |XX | +-+ || |XX I | || |XX N | ++ |XX T J11B | Terminating |XX E | Resistor Packs ++ |.X R | || |XX F | || |XX A | || |XX C | ++ |XX E | |XX1 | | |1+LED |XX J11A |++J12 |XX Power +---------------------------------------------------------+ 1 ********************************************************************** J U M P E R S ********************************************************************** QUANTUM MAVERICK 270/540S PRODUCT MANUAL 81-106845-01, 6/20/1994 Jumper Setting ============== x = Jumper set at factory J13 RESERVED ------------ CAUTION These jumpers are reserved for factory use only. Installing a jumper at any of these locations terminates normal drive operation. On the drive printed circuit board assembly (PCBA), there are three pairs of jumper pins that allow you set the drive's SCSI address. When you change a jumper setting, the new setting is in effect when the drive is next powered on. Used in combination, the jumper setting accross pins A2, A1, and A0 determine the Maverick 270/540S hard disk drive's SCSI-bus device identification (SCSI ID). By default, Quantum configures the drive with a SCSI ID of six - that is, with jumpers installed across the pins labeld A2 and A1 and no jumper installed across the pins labeld A0. Default Settings for Address Jumpers ------------------------------------ +---------+-------------------+-----------------------------+ |Jumper | Default Setting | Description | +---------+-------------------+-----------------------------+ | A2 | ON | A2, A1, and A0 are used in | | A1 | ON | combination to determine the| | A0 | OFF | drive's SCSI ID. | | | | The default SCSI ID is 6. | +---------+-------------------+-----------------------------+ Note: ON indicates a jumper is installed. OFF indicates that no jumper is installed. SCSI ID Jumper Settings ----------------------- +------------------------------+----------+ | Jumper settings | SCSI ID | +---------+---------+----------+----------+ | A2 | A1 | A0 | | +---------+---------+----------+----------+ | OPEN | OPEN | OPEN | 0 | +---------+---------+----------+----------+ | OPEN | OPEN | CLOSED | 1 | +---------+---------+----------+----------+ | OPEN | CLOSED | OPEN | 2 | +---------+---------+----------+----------+ | OPEN | CLOSED | CLOSED | 3 | +---------+---------+----------+----------+ | CLOSED | OPEN | OPEN | 4 | +---------+---------+----------+----------+ | CLOSED | OPEN | CLOSED | 5 | +---------+---------+----------+----------+ |x CLOSED | CLOSED | OPEN | 6 | +---------+---------+----------+----------+ | CLOSED | CLOSED | CLOSED | 7 | +---------+---------+----------+----------+ The SCSI bus supports up to eight devices, including the host system. A device's identification number determines its priority and must unique in the system. DC Power and pin connector assignments -------------------------------------- +------------+ pin 1 +12 VDC | 4 3 2 1 | pin 2 +12 V Return (Ground) +------------+ pin 3 + 5 V Return (Ground) pin 4 + 5 VDC Note: Labels indicate the pin numbers on the connector. Pins 2 and 3 are connected together on the drive. ********************************************************************** I N S T A L L ********************************************************************** QUANTUM MAVERICK 270/540S PRODUCT MANUAL 81-106845-01, 6/20/1994 Notes on Installation ===================== Orientation ----------- The mounting holes on the Maverick 270/540S hard disk drive allow the drive to be mounted in any orientation. horizontally vertically +-----------------+ +--+ +--+ | | | +-----+ +-----+ | | | | | | | | | +-+-----------------+-+ | | | | | | +---------------------+ | | | | | | | | | | | | | | | | | | +---------------------+ | +-----+ +-----+ | +-+-----------------+-+ +--+ +--+ | | | | +-----------------+ Mounting -------- For mounting, #6-32 UNC screws are recommended. To avoid stripping the mounting-hole threads, the maximum torque applied to the screws must not exceed 8 inch-pounds. Terminating Resistors --------------------- At the factory, Quantum installs two resistor networks in sockets on the drive PCBA to terminate the SCSI bus. Only the first device - usually the host - and the last device on a SCSI bus should contain terminating resistors. When installing the Maverick 270/540S hard disk drive in any other position on the SCSI bus, remove the terminating resistors. Clearance --------- The printed-circuit board assembly (PCBA) is very close to the mounting holes. Clearance from the drive to any other surface - except mounting surfaces - must be 1.25 millimeters (0.05 inches) minimum. Do not use mounting screws longer than 3.5 mm (4.3 mm side). The specified screw length allows full use of the mounting-hole threads, while avoiding damaging or placing unwanted stress on the PCBA. CAUTION The printed-circuit board (PCB) is very close to the mounting holes. Do not exceed the specified length for the mounting screws. The specified screw length allows full use of the mounting-hole threads, while avoiding damaging or placing unwanted stress on the PCB. To avoid stripping the mounting-hole threads, the maximum torque applied to the screws must not exceed 8 inch-pounds. Ventilation ----------- The Maverick 270/540S hard disk drive operates without a cooling fan, provided the ambient air temperature does not exceed 122*F (50*C). Cable Connector --------------- The Maverick 270/540S has a combination DC/SCSI cable connector. The drive's combination DC/SCSI connector part number is Dupont 90910-001, 2 in 1 SMT. +----------------------------------------+ | | | | | +-----J11-Section-B----------Section-A | | |+-------------------------++4-3-2-1+| | | ||oooooooooooooooooooooooo1||O O O O|| | | ||ooooooooooooooooooooooooo|| || | | |+-------------------------++-------+| | +-+------------------------------------+-+ Recommended header connector and strain relief: 50-pin connector base part AMP P/N 1-746195-2 or equivalent 50-pin connector strain relief AMP P/N 499508-2 or equivalent Recommended mating connector and their part numbers: 4-pin connector (J11 section A) AMP P/N 1-480424-0 or equivalent Loose-piece contacts AMP P/N 61173-4 or equivalent Strip contacts AMP P/N 350078-4 or equivalent ---------------+ +------------+| pin 1 +12 VDC | 4 3 2 1 || pin 2 +12 Volts Return +------------+| pin 3 + 5 Volts Return ----------------+ pin 4 + 5 VDC Labels indicate the pin numbers on the connector. Pin 2 and 3 are connected together on the drive. LED Connector (J12) ------------------- The LED connector my be used to connect an external LED for the pur- pose of monitoring drive activity. A 220-ohm resistor is connected in series from the +LED pin to +5 volts. The -LED pin is connected to a switching transistor on the drive that turns on and lights the LED when the disk is performing a read or write operation. When no read or write operation is taking place, the transistor turns off and the LED is extinguished. +---------------------+--------------------------------+ | J12 Pins | Mating Connector Type and Part | |Pin Number| Function | Number (or equivalent) | +----------+----------+--------------------------------+ | 1 | -LED | Two-position housing: | +----------+----------+ Molex P/N 51021-0200 | | 2 | +LED | Loose-piece contacts: | | | | Molex P/N 50058-8100 | +----------+----------+--------------------------------+ Power Sequencing ---------------- You can apply the power in any order or manner, or short or open either the power or power-return line with no loss of data or damage to the disk drive. However, data may be lost in the sector being written at the time of power loss. The drive can withstand transient voltages of +10% to -100% from nominal while powering up or down. Head/Disk Assembly ------------------ The head/disk assembly (HDA) contains the mechanical subassemblies of the drive, which are sealed under a metal cover. The HDA consists of the disk stack assembly, rotary positioner assembly, headstack assembly, actuator latch assembly, and base casting which includes the DC motor assembly. Assembly of the HDA takes place in a Class- 100 clean room. These subassemblies are not adjustable or field- repairable. Caution: To ensure that the air in the HDA remains free of contamina- tion, never remove or adjust its cover and seals. Tampering with the HDA voids your warranty. The Maverick 270S has one magnetic disk and teo read/write heads, while the Maverick 540S has two disks and four read/write heads. DC Motor Assembly ----------------- Integral with the base casting, the DC motor assembly is a rotating- shaft, brushless DC spindle motor that drives the counter-clockwise rotation of the disks. Disk Caching ------------ The Maverick 270/540S hard disk drive incorporates DisCache, a 96K disk cache, to enhance drive performance. This integrated feature can significantly improve system throughput. Read and write caching can be enabled or disabled using the MODE SELECT command. (The upper 32K is used for firmware). Track and Cylinder Skewing -------------------------- +-------+---------+------+---------+ | Zone |Sectors |Track | Cylinder| | Number|Per Track|Skew | Skew | | | |Wedge | Wedge | +-------+---------+------+---------+ | 15 | 58 | 28 | 32 | +-------+---------+------+---------+ | 14 | 65 | 28 | 32 | +-------+---------+------+---------+ | 13 | 69 | 28 | 32 | +-------+---------+------+---------+ | 12 | 74 | 28 | 32 | +-------+---------+------+---------+ | 11 | 78 | 28 | 32 | +-------+---------+------+---------+ | 10 | 83 | 28 | 32 | +-------+---------+------+---------+ | 09 | 88 | 28 | 32 | +-------+---------+------+---------+ | 08 | 93 | 28 | 32 | +-------+---------+------+---------+ | 07 | 97 | 28 | 32 | +-------+---------+------+---------+ | 06 | 104 | 28 | 32 | +-------+---------+------+---------+ | 05 | 108 | 28 | 32 | +-------+---------+------+---------+ | 04 | 112 | 28 | 32 | +-------+---------+------+---------+ | 03 | 114 | 28 | 32 | +-------+---------+------+---------+ | 02 | 118 | 28 | 32 | +-------+---------+------+---------+ | 0,1 | 118 | 28 | 32 | +-------+---------+------+---------+ |System | 94 | 28 | 32 | +-------+---------+------+---------+ Automatic Actuator Lock ----------------------- To ensure data integrity and prevent damage during shipment, the drive uses a dedicated landing zone and Quantum's patented AIRLOCK. The AIRLOCK holds the headstack in the landing zone whenever the disks are not rotating. It consists of an air vane mounted near the perimeter of the disk stack and a locking arm that restrains the actuator arm assembly. When DC power is applied to the motor and the disk stack rotates, the rotation generates an airflow on the surface of the disk. As the flow of air across the air vane increases with disk rotation, the locking arm pivots away from the actuator arm, enabling the headstack to move out of the landing. When DC power is removed from the motor, an electric return mechanism automatically pulls the actuator into the landing zone, where the AIRLOCK holds it in place. Acoustics --------- +-----------------+-----------------+----------+ | Operating Mode | Measured Noise | Distance | +-----------------+-----------------+----------+ | Idle On Track | 34 dBA (mean) | 39.3 in | | | 38 dBA (maximum)| (1 m) | +-----------------+-----------------+----------+ | Seeking (Random)| 39 dBA (mean) | 39.3 in | | | 42 dBA (maximum)| (1 m) | +-----------------+-----------------+----------+ ********************************************************************** F E A T U R E S ********************************************************************** QUANTUM MAVERICK 270/540S PRODUCT MANUAL 81-106845-01, 6/20/1994 Product Overview ---------------- Quantum's Maverick 270/540S hard disk drives are a part of a family of high-performance, 1-inch-high, hard disk drives manufactured to meet the highest product quality standards. Maverick drives use nonremovable, 3 -inch hard disks. The Maverick 270/540S hard disk drives feature an embedded SCSI drive controller and use SCSI commands to optimize system performance. The drive manages media defects and error recovery internally, so these operations are transparent to the user. The innovative design of Maverick 270/540S hard disk drives enables Quantum to produce a family of low-cost, high-reliability drives. Formatted Capacity ------------------ At the factory, the Maverick 270/540S receives a low-level format that creates the actual tracks and sectors on the drive. Reliability ----------- Mean Time Between Failures (MTBF): 150,000 Power On Hours (POH), typical usage The Quantum MTBF numbers represent Bell-Core MTBF predictions at ambient operating conditions and represent the minimum MTBF that Quantum or a customer would expect from the drive. Quantum's ongoing reliability testing and field return data has historically confirmed an actual MTBF of twice the Bell-Core prediction. Preventive Maintenance (PM): Not required Mean Time To Repair (MTTR): 30 minutes Start/Stop: 20,000 cycles (minimum) Component Life: 5 Years Error Detection and Correction ------------------------------ As disk drive areal densities increase, obtaining extremely low error rates requires a new generation of sophisticated error-correction codes. Quantum Maverick 270/540S series hard disk drives implement 112-bit single- and double-burst Reed-Solomon error-correction techniques to reduce the uncorrectable read error rate to less than one bit in 1 x 10(14) bits read. When errors occur, an automatic retry and a more rigorous double- burst correction algorithm enable the correction of any sector with two bursts of three incorrect bytes each or up to six multiple random one-byte burst errors. In addition to these advanced error correction capabilities, the drive's additional cross-checking code and algorithm double checks the main ECC correction to greatly re- duce the probability of miscorrection. Multiple Random Burst Errors ---------------------------- The drive's ECC can correct up to 48 bits of multiple random errors, provided that the incorrect bytes follow the guidelines for correctablle double burst errors. Up to 24 bits of multiple random errors can be corrected on-the-fly if only one byte per interleave contains an error. If more than two bytes in any one interleave are in error, the sector cannot be corrected. Defect Management ----------------- The Maverick 270/540S allocates one sector per cylinder as a spare. In the factory, the media is scanned for defects. If a sector on a cylinder is found to be defective, the address of the sector is added to the drive's defect list. Sectors located physically subsequent to the defective sector are assigned logical block addresses such that a sequential ordering of logical blocks results. This inline sparing technique is employed in an attempt to eliminate slow data transfer that would result from a single defective sector on a cylinder. If more than one sector is found defective on a cylinder, the inline sparing technique is applied only to the first sector. The remaining defective sectors are replaced with the nearest available spare sectors on nearby cylinders. Such an assignment of additional replacement sectors from nearby sectors rather than having a central pool of spare sectors is an attempt to minimize the motion of the actuator and head that otherwise would be needed to find a replace- ment sector. The result is minimal reduction of data throughput. Seek Time --------- +----------------------------------+--------+ | |270/540S| +----------------------------------+--------+ |Track-to-Track msec. typ. | 5 | +----------------------------------+--------+ |Average msec. typ. | 14 | | msec. max. | 28 | +----------------------------------+--------+ |Sequential Head Switch msec. | 4.5 | +----------------------------------+--------+ |Latency msec. avg. | 8.33 | +----------------------------------+--------+