S T 1 1 3 3 N S SEAGATE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 3.5"/HH Cylinders 1268| | | Capacity form/unform 113/ 133 MB Heads 5| | | Seek time / track 15.0/ 4.0 ms Sector/track 35| | | Controller SCSI2 SINGLE-ENDED Precompensation Cache/Buffer 32 KB Landing Zone Data transfer rate 1.250 MB/S int Bytes/Sector 512 5.000 MB/S ext SYNC Recording method RLL 2/7 operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 10 50 | -40 70 Power: sleep W Humidity % 8 90 | 5 95 standby W Altitude km -0.305 3.048| -0.305 12.192 idle W Shock g 2 | 50 seek W Rotation RPM 3600 read/write 11.5 W Acoustic dBA 43 spin-up W ECC Bit 48 MTBF h 150000 Warranty Month 12 Lift/Lock/Park YES Certificates CSA,FCC,UL478,VDE ********************************************************************** L A Y O U T ********************************************************************** SEAGATE ST1126/1133/1162/1186/1201/1239-N PRODUCT MANUAL 36132-006 Standard I/O ============ +-------------------------------------------------------+ | |XXXX Power | 1-+ | | | | |X1 | Resistor | | |XX | Termination +-+ |XX SCSI | Packs 1-+ |XX Connec- | | | |XX tor | | | |XX | +-+ |XX | 1-+ |XX | | | |XX | | | |+-1 | +-+ || | SCSI ID | +-+|| | +----------------------------------------------------+-+++-11 Termination Power Reoriented I/O ============== +-------------------------------------------------------+ | |XXXX Power | 1-+ | | | | |XX | Resistor | | |XX | Termination +-+ |XX SCSI | Packs 1-+ |XX Connec- | | | |XX tor | | | |XX | +-+ |XX | 1-+ |XX | | | |1X | | | |+-1 | +-+ || | SCSI ID | +-+|| | +----------------------------------------------------+-+++-11 Termination Power ********************************************************************** J U M P E R S ********************************************************************** SEAGATE ST1126/1133/1162/1186/1201/1239-N PRODUCT MANUAL 36132-006 Jumper setting -------------- J2 SCSI ID jumpers -------------------- +----------------+-------+-------+-------+------+-------+-------+ | SCSI ID | 11-12 | 10-9 | 8-7 |6-5 | 4-3 | 2-1 | +----------------+-------+-------+-------+------+-------+-------+ | 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| +----------------+-------+-------+-------+------+-------+-------+ |Enable Parity | | | CLOSED| | | | +----------------+-------+-------+-------+------+-------+-------+ |Start/Stop | | CLOSED| | | | | +----------------+-------+-------+-------+------+-------+-------+ |Ext.Spindle | OPEN | | | | | | |Sync. Connection| | | | | | | +----------------+-------+-------+-------+------+-------+-------+ Pin 1-2: Least Significant Bit 3-4: Next Significant Bit 5-6: Most Significant Bit Start/Stop option ----------------- When a jumper is installed on pins 9 and 10, the drive waits for a Start Unit command from the host before starting the spindle motor. The spindle motor is also stopped using this command. External Spindle Motor Synchronization -------------------------------------- Note: this option is available on the ST1133N, ST1186N, ST1201N, and ST1239N only. Terminator Power Source Select ------------------------------ ----+----+--PCB-- A-B Drive Power Connector (Factory Default) |D C| A-C Drive from SCSI Bus |B A| A-C & B-D Drive from Power Connector and Provide +----+ to SCSI Bus B-D Only Provide to SCSI Bus 50-Pin SCSI Connector Pin Assignments ------------------------------------- Signal Pin No. Signal Pin No. ---------------------------------------- -DB(0) 2 Ground 28 -DB(1) 4 Ground 30 -DB(2) 6 -ATN 32 -DB(3) 8 Ground 34 -DB(4) 10 -BSY 36 -DB(5) 12 -ACK 38 -DB(6) 14 -RST 40 -DB(7) 16 -MSG 42 -DB(P) 18 -SEL 44 Ground 20 -C/D 46 Ground 22 -REQ 48 Ground 24 -I/O 50 Terminator 26 Power Note: All odd pins, except pin-25 are connected to ground. Pin-25 is open. Caution: Pin 25 must not be connected to ground at the host end or the drive end of the cable. If the I/O connector should accidentally be plugged in upside down, terminator power would then be shorted to ground. The minus sign next to signals means that the asserted state is the low voltage of the two levels used for logic signals. DC Power and pin connector assignments -------------------------------------- +------------+ 1 = + 12 VDC | 1 2 3 4 | 2 = + 12 Volts return +------------+ 3 = + 5 Volts return 4 = + 5 VDC ********************************************************************** I N S T A L L ********************************************************************** SEAGATE ST1126/1133/1162/1186/1201/1239-N PRODUCT MANUAL 36132-006 Notes on installation ===================== Drive mounting -------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || x x | | | | | | || x x || +------x------x-------+ | +-----+ +-----+ | || xx || +-+------x--x-------+-+ +--+ +--+ || x x || | xx | || x x || | x x | || x x || +---x--------x----+ |x x| x x x++----------------++x UNACCEPTABLE! UNACCEPTABLE! Never install PC board on the Top! The drive may be mounted horizontally with the PC board down or on either side. Mounting vertically on either end is a prohibited orien- tation. For optimum performance, the drive should be formatted in the same position as it will be mounted in the host system. Do not mount the drive vertically on either end. Shock and vibrations -------------------- All shock and vibration specifications assume that the drive is moun- ted in an approved orientation with the input levels at the drive mounting screws. During normal operating shock and vibration, there is no physical damage to the drive and performance is not degraded. During abnormal operating shock and vibration, there is no physical damage to the drive, although performance may be degraded during the shock or vibration episode. Drive performance will return to speci- fications when normal operating shock levels resume. Handling and Static-Discharge Precautions ----------------------------------------- After unpacking, and prior to system integration, the drive may be exposed to potential handling and ESD hazards. It is mandatory that you observe standard static-discharge precautions. A grounded wrist- strap is preferred. Handle the drive by the frame only and always rest the drive on a padded surface until it is mounted in the host system. Caution: to avoid potential service problems, observe the following precautions: - Handle the drive by the edges or frame. Do not put pressure on the top cover or touch the circuit board. - Do not remove or cover factory-installed labels. They contain in- formation needed to service the product. - Do not put labels over the brather holes on the top surface of the drive. The breather holes must remain clear to allow air to circu- late. - If a label, other than a factory-installed label, has been placed over the breather holes, remove it. Do not poke holes through the label. This damages the filter underneath, allowing contaminants to enter the drive. - Do not use solvents to remove the adhesive residue from drive labels. Small amounts of solvent may get into the unit and conta- minate the disc. - Do not plug a live DC power cabel into the drive power connector. This damages the connector contacts. FCC Verification ---------------- This equipment has been tested with a Class B computing device and has been found to comply with Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful inter- ference in residential installations. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that will not occur in a particular installation. Caution: Any changes or modifications to the equipment by the user not expressly approved by the garantee or manufacturer could void the user's authority to operate such equipment. Note: This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of communications. SCSI Interface -------------- The interface is compatible with the mandatory subset of the ANSI SCSI-2 Interface Specification and the Common Command Set (CCS) document. In addition, the interface includes automatic features that relieve the host from the necessity of knowing the physical architecture of the target. The physical interface consists of single-ended drivers and receivers using asynchronous or synchronous communication protocols that support cable lengths of up to 6 meters and a bus interface transfer rate of up to 1.25 Mbytes/sec asynchronous and 5.0 Mbytes/sec synchronous. The drive is always a target on the SCSI bus. Sway ---- The sway of the HDA left to right and front to rear is within the envelope. The sway of the HDA up and down is .18 inches outside the envelope. SCSI Connector -------------- The drive may be daisy-chained to other SCSI devices using a common cable. The SCSI devices at both ends of the daisy-cain are to be terminated. Intermediate SCSI devices shall not be terminated. All signals are common between all SCSI devices. The drive may be daisy- chained only with SCSI devices that have single-ended driver and receivers. A maximum of eight SCSI devices (including the Host) can be daisy-chained together. Single-Ended Drivers/Receivers ------------------------------ The drive uses single-ended drivers and receivers. Terminator circuits should be installed only on the last drive in the daisy- chain. Cable requirements ------------------ Only nonshielded cable connectors are applicate. A 50 conductor flat cable or 25 twisted pair cable shall be used. The maximum cable length is 6.0 meters. A stub length of no more than 0.1 meter is allowd off the mainline interconnection at any connected equipment. A characteristic impedance of 100 10% is recommended for un- shielded flat or twisted-pair ribbon cable. However, most of the commonly-avialable cables have a somewhat lower characteristic impedance. To minimize discountinuites and signal reflections, cables of different impedances should not be used in the same bus. If the same SCSI bus uses both shielded and unshielded cables, problems may result from impedance mismatch. In implementing your system, you may encounter trade-offs in shielding effectiveness, cable length, the number of loads, transfer rates, and cost to achieve satisfactory system operation. A minimum conductor size of 28 AWG should be used to minimize noise effects. External Spindle Motor Synchronization -------------------------------------- Note: this option is available on the ST1133N, ST1186N, ST1201N, and ST1239N only. The external spindle motor synchronization option allows for synchro- nized rotation of multiple disc drives in a system. Drives configured to source a spindle clock signal are not interchangeable with drives configured to one of the following modes: Use internal spindle clock, omit spindle reference clock. - Use external spindle clock with a line terminator. - Use external spindle clock without the line terminator. The spindle rotation synchronization uses one of the following methods: - Reference clock is generated by the controller. All the disc drives are connected radially to the controller. Each end must be terminated. Reference clock is generated by a master disc drive. All disc drives are connected in parallel (daisy-chain) to the master disc drive. The master disc drive end and the last drive in the chain must be terminated. The cable consists of two #28 AWG wires. The maximum cable length is 20 ft (6.1 meters). The external spindle clock connector header is mounted on the disc drive main PCB. Posistion 6 of the SCSI ID Address and Option Select Jumpers is used for the external spindle clock connection. The external spindle clock signal shares balanced differential drivers, balanced differential receivers and terminators with the data transfer section. Terminators ----------- There are three internal drive I/O termination SIP resistor modules that plug into sockets on the PC board. You can order the drive with or without these terminators, depending on the application. All single initiator/single target applications require that the initiator and drive be terminated. Daisy-chain applications require that only the units at each end of the daisy-chain be terminated. All other peripherals on the chain should not be terminated. All interface signals with the drive are single-ended and must be terminated with 220 to 5V and 330 to ground at each end ot the total cable. All signals use open collector of three state drivers. Note: Remove terminator resistor packs where terminators are not required. Removal of terminator power source selection jumper does not disconnect the terminator resistors from the circuit. Terminator Power ---------------- The drive can be configured to supply terminator power for the SCSI Bus. The drive also may be configured to accept terminator power via Pin 26 of the SCSI bus or to provide terminator power for optional internal termination resistors via the drive power connector. If terminators are installed, jumpers must also be installed. DC Power Specification ---------------------- Except during the write procedure, power may be applied or removed in any sequence without loss of data or damage to the drive. If you turn off the power during the write procedure, you may lose the data beeing written. A 10% tolerance for 5 VDC and +10/-15% tolerance for the 12 VDC is permissible during the first 10 seconds of power up. A voltage tolerance of 5% must be maintained after this initial start period. ********************************************************************** F E A T U R E S ********************************************************************** SEAGATE ST1126/1133/1162/1186/1201/1239-N PRODUCT MANUAL 36132-006 Introduction ------------ These products are high capacity, high performance drives incor- porating an embedded SCSI controller. The SCSI Interface used in the Swift drive is compatible with the ANSI SCSI standard and the Common Command Set (CCS) document, Revision 4.B. Swift SCSI interface drives are classified as "intelligent peripherals." These drives provide Level 2 conformance with the ANSI SCSI standard. UL/CSA Listing -------------- The Swift SCSI disc drives comply with UL 478 and UL 1950, CSA C22.2 No. 220-M1986, VDE 0806/8.81 and EN 60 950/1.88 VDE Listing ----------- The Swift SCSI disc drives comply with VDE 0806/8.81 and EN 60 950/1.88 Format capacity --------------- The sector size is user-selectable (256-4,096) at format time. The user may modify the sector size before issuing a format command and obtain different formatted capacities. User available will depend on the spare reallocation method selected. The maximum execution time for a format command is 20 minutes. Reliability ----------- Read error rates are measured with automatic retries and data correction with ECC enabled and all flaws reallocated. MTBF is measured at nominal power, sea level, and 40*C ambient temperature. MTBF 150,000 power on hours MTTR 30 Minutes Seek Time Definition and Timing ------------------------------- Seek time is a true statistical average (at least 5,000 measure- ments) of seek time less drive internal and external host overhead. All measurements are calculated under nominal conditions of tempera- ture, voltage and horizontal orientation. Track-to-track access time is the average of all possible single- track seeks in both directions. Average seek time is measured by executing seek in both directions between random cylinders or Logi- cal Block Addresses (LBA). Full-stroke access time is one-half the time needed to seek from LBA zero to the maximum LBA and back to LBA zero. Note: Host overhead varies between systems and cannot be specified. Drive internal overhead is measured by issuing a no-motion seek from the highest Logical Block Address. Overhead is typically less than 1.5 |ST11**N | ----------------------------------+--------+ Track-to-Track msec. typ. | 4 | msec. max. | 5 | Average msec. typ. | 15 | Average msec. max. | 16 | Full-Stroke msec. typ. | 33 | msec. max. | 35 | Latency msec. avg. | 8.33 | ----------------------------------+--------+ SCSI Bus -------- Communication on the SCSI bus is allowed between only two SCSI devices at a time. There can be a maximum of eigth SCSI devices including the host computer(s) connected to the SCSI bus. Each SCSI device has a SCSI ID bit assigned. The SCSI ID is assigned by installing from zero to three jumper plugs onto a connector in a binary coded configuration during system configuration. When two SCSI devices communicate on the SCSI Bus one acts as an initiator and the other acts as a target. The initiator (typically a host computer) originates an operation and the target performs the operation. The drive always operates as a target. The Host Adapter/Initiator must be identified by one of the eight SCSI Device Addresses. When installing drives on the SCSI Bus make sure no drive has the same address as the Host Adapter. Certain SCSI bus functions are assigned to the initiator and certain SCSI bus functions are assigned to the target. The initiator will select a particular target. The target will request the transfer of Command, Data, Status or other information on the data bus. Thermal Compensation -------------------- The Thermal Compensation operation compensates for thermal-related position offset on the selected head. Thermal Compensation is per- formed during startup and every 2 minutes thereafter. This periodic compensation coincides with a host command service operation. The last command execution time will increase by 100 msec. typical or 125 msec. maximum. Read/Write Head Auto-Park ------------------------- Upon power-down, the read/write heads automatically move to the shipping zone. All portions of the head/slider assembly park inboard of the maximum data cylinder. When power is applied, the heads re- calibrate to Track 0. Start/Stop Time --------------- After DC power has been applied, the drive becomes ready within 20 seconds unless the Motor Start option is disabled. During this time, the drive responds to the SCSi interface. Stop time is about 10 seconds if the drive was commanded to stop and DC power was not removed. Otherwise, no dynamic braking is applied, so stop time is considerably longer than 10 seconds. If the Motor Start option is enabled the internal controller accepts a Motor Start, Inquiry, or Request Sense command via the SCSI inter- face 3 seconds after DC power has been applied. After the Motor Start command has been received, the drive becomes ready for read/write operations within 20 seconds. During this time, the drive responds to the SCSI interface. Note: Do not move the drive until the motor has come to a complete stop. There is no power control switch on the drive. ********************************************************************** G E N E R A L ********************************************************************** SEAGATE SCSI CONNECTOR Evolution of the SCSI Connector: The Single Connector Standard ----------------------------- Introduction ------------ The advent of SCSI as the interface of choice among high-performance system designers has provided several benefits for the computing industry. Unlike traditional interface designs which usually only allow two data storage peripherals, SCSI allows the use of multiple peripherals operating on a common bus. Because of the expandability, power and flexibility afforded by this implementation, system designers quickly embraced SCSI as the optimal interface for performance intensive computing platforms. Unfortunately, the very elements which provide this flexibility and expandability also created difficulty in the configuration and installation of several peripherals within a single enclosure. Furthermore, the increasing popularity of disc arrays and mass-storage subsystems has created the need for efficient and simplified component designs. Currently, installing a SCSI drive is a complex procedure. Apart from physically mounting the drive within the system chassis, there are the additional tasks of attaching the interface and power cables to their appropriate connectors, and placing several jumpers on the circuit board to configure the drive for proper operation within the SCSI subsystem. These jumpers are used to designate mandatory options such as a specific SCSI ID for that drive, and application specific options such as a delayed or remote start of the spindle motor. If a visual indication of drive operation is desired, an additional cable attachment is necessary for the activity LED. For applications which require several drives to synchronize their spindle rotation, yet another connection must be made to provide the drive with an external clock signal. To complicate matters, the SCSI interface itself is specifically designed to accommodate the concurrent operation of several peripherals simultaneously. Under such circumstances, the task of configuring, installing and connecting several peripherals multiplies the number of necessary operations. Maintenance of such an arrangement can become very complicated -- the proverbial "Plumber's nightmare." The Single Connector Standard as proposed by Sun Microsystems, Seagate Technology and other drive manufacturers is an ideal design solution for these problems. The Single Connector was created to facilitate the expandability and flexibility of the SCSI interface, while simplifying the intricacies of peripheral installation and interconnection. In addition to vastly simplifying this process, the standard also encompasses all of the critical elements necessary for migration to the Fast and Wide implementations of SCSI. Evolution of the Connector -------------------------- In short, the Single Connector is true to its name. It integrates the power connector, the interface connector, the SCSI ID jumpers, the LED signal, and several other functions into a single unit. The intent of the design is to create a single point of contact for all electrical and electronic connection necessary to operate a SCSI peripheral. As such, it represents an evolution from earlier, disjoint methods to a single, unified system of peripheral attachment. Present within the connector is the full complement of interface signals required for the 8-bit bandwidth of the standard SCSI interface. Also present, are the additional signal lines required for Fast/Wide SCSI, which support 16-bit operation as well. The Fast/Wide SCSI specification also extends the maximum number for peripherals common to a SCSI bus from eight units to 16 units. The Single Connector Standard provides support for all requirements for the operation of Fast/Wide SCSI. Therefore, the migration to Fast/Wide SCSI from standard SCSI is already built into the specification. In addition to the interface signals, the standard also includes the provision of setting a device's SCSI ID via system software. Four signal lines have been designated to allow the host system to assign a device's SCSI ID. This includes option of dynamically reassigning and software device selection. For applications which require on-the-fly adjustment of the peripheral ID and selection status on the SCSI bus, this feature is invaluable. Special features required by specific types of applications have also been integrated in to the Single Connector specification. First, the inclusion of a specific Spindle Synchronization signal will provide an essential feature to the design of many disc array and RAID array systems. The synchronization process begins with a clock pulse generated by an external source, such as the host, or perhaps another drive. An individual drive is able to coordinate the rotation of its spindle motor to the clock signal, which insures all drives within that subsystem are rotating in concert. Many disc arrays require this feature for coherent operation of multiple components as a unified whole. Other special features supported by the connector are Delayed Spindle Start and Remote Spindle Start. Delayed motor start is usually necessary for systems which need time to initialize the host system before the drives are needed on-line. Certain systems have special power consumption requirements which also require the Delayed Spindle. Start option. The Remote Spindle Start option is a feature which allows the host to control when the drive initiates spin-up of the spindle motor. In large disc arrays some drives are assigned special functions (such as data backup), and consequently are used rarely. In such cases there is no need for the drive to be spinning, as long as the electronic circuitry on the drive is active. Remote Spindle Start allows the drive's electronics to remain active, while the spindle is at rest. When data is necessary from the drive, the command is sent to start the spindle motor. This feature conserves system power and minimizes wear on the spindle motor. The last elements integrated into the Single Connector are the power lines. The specification provides both +5 Volt and +12 Volt power, with dedicated ground for each. Specifically, there are four +12 Volt and 12 Volt ground lines, with three +5 Volt and 5 Volt ground lines. The power and ground lines are strategically positioned on the connector to mitigate the effects of electro-magnetic interference with the signal lines. Finally, the connector was originally designed to fit onto the chassis of low profile (1-inch height) 3.5" disc drive. However, the connector itself can fit 1.6-inch high 3.5-inch disc drives and 2.5-inch drives as well. This flexibility provides for the migration to smaller form-factor drives as well. Advantages ---------- The structure of the connector connotes modifications to the host chassis. The impetus for the development of the Single Connector was the need for simplification of the host design. The chief objectives included the reduction of complexity in attaching or replacing a peripheral. Essential to the simplification process is the implementation of a series of mating connectors mounted on the host system backplane. Properly designed backplanes would allow the installation of a drive without the need for attaching any cables. In fact, backplane mounting provides an immediate solution for two common problems associated with traditional installment. First, the Single Connector backplane avoids the tangle of interface cables, power cables, LED activity indicators and so forth. Fears of malfunctioning wires and twisted cables are also allayed. One connection provides for all of the functions and helps alleviate all of the problems. More importantly, electro-magnetic noise which is incurred from adjacent cables is completely eliminated, since there are no cables necessary in the interface connection. This helps preserve the integrity of the data on the SCSI bus and prevents signal corruption. Probably the best feature of the of Single Connector implementation is the capability it provides for blind mating the drive to the host. Since all necessary functions are integrated within the connector, a single action is all that is necessary to install a drive. Blind mating greatly simplifies peripheral attachment in critical applications such as network data servers, RAID arrays and data backup systems. With proper design of the backplane and mounting frame, a technician will be able to install a drive by simply sliding the drive along the mounting rails until it mates with the connector. The installation would be done without the need for reaching in to the mounting enclosure, without setting any configuration jumpers, or attaching any cables. Even the drive configuration can be done by the host via the ability to softselect the drive's SCSI ID and operating parameters. Blind plane mating gives the Single Connector unparalleled ease and time savings for peripheral installation. Summary ------- The manifold advantages of Single Connector are largely self-evident. The spindle synchronization and ease of mounting create an excellent solution for RAID implementations. The capability to remotely configure the drive and ease of installation naturally lends the Single Connector for use in networked environments. Furthermore, the ability to migrate to other platforms is a key factor in the viability and growth potential of the Single Connector Standard. Therefore, the single Connector is an excellent choice for system designers wishing to simplify the host design process through streamlining and integration. The ability to migrate upward to Fast/Wide SCSI, or down-size to the 2.5-inch form-factor, concurrently allows the system to accommodate higher bus bandwidths and upcoming peripheral form-factors. The Single Connector provides unprecedented ease, speed and integrated upgradability within a single specification. It has a high potential for simplifying a vast number of applications while simultaneously reducing installation time and costs. The Single Connector signifies an evolution of the SCSI connector. It provides the rarest of combinations: enhanced simplicity, reduced cost, and an increased time savings.