Micropolis 1578-15
Hard Disk Drive
Overview
| Model | Capacity | Size | Height | Interface | Bus Type |
|---|---|---|---|---|---|
| Micropolis 1578-15 | 332MB | 5.25" | FHT | SE | SCSI1 |
Specifications
| Size | 5-1/4" |
| Interface | SCSI |
| Encoding Method | RLL |
| Formatted Capacity | 6331.7 MB |
| Disks | 8 |
| Heads | 15 |
| Cylinders | 1224 |
| Sectors | 36 |
| Buffer Size | N/A |
| Average Seek | 16 msec |
| Single Track | 4 msec |
| Rotation Speed / Avg. Latency | 3600 rpm +/- 0.5% |
| Transfer Rate to / from media | 15 Mbits / sec |
| Transfer Rate to / from buffer | N/A |
| Tracks Per Inch (TPI) | |
| Bits Per Inch (BPI) | |
| Dimensions | 8.0"L x 5.75"W x 3.25"H |
| Weight | 5.75 lbs. |
Power Requirements
| +12V +/-5% | +5V +/-5% | Power | |
| Spin up | 4.25A (max) | ||
| Read / Write | 2.25A avg | 2.0A avg | |
| Typical | 32 Watts |
Notes
Drive Addressing and Interface Termination
PIN 1
J2 J1 |
____________ _______________________________ J3
__| |_| |___________
| |____________| |_______________________________| | POWER |
| RN202 RN203 RN204 |_________|
| |
| |
| ... W201 |
| 123 |
| |
| W5 |
| W4 |
| (Component Side) W20 |
| ID0 |
| ID1 |
| ID2 |
| |
____ ID2
| ___ ID1
|| __ ID0 PIN 1
J2 ||| J1 |
____________ _______________________________ J3
__| |_| |___________
| |____________| |_______________________________| | POWER |
| RN202 RN203 RN204 |_________|
| W4 W5 |
| W21 |
| W1 W2 |
| |
| W11 |
| |
| W20 |
| (Component Side) |
| |
| |
| |
| |
ID0, ID1, ID2 SCSI Address Jumpers
The SCSI ID (drive address) jumpers are identified as ID0, ID1,
and ID2. ID selection is binary, as shown in the table below.
For multiple drive installations, on one Host Adapter, each drivedrive must have a unique address. Drives are configured as SCSI ID 0 at the factory. RN202, RN203, RN204 Interface Terminatorr The Interface Terminators factory installed at RN202, RN203, and RN204 provide proper termination for the interface lines. When daisy-chaining multiple drives, leave the terminators installed only in the last physical drive on the daisy chain cable; remove all three terminators from each of the other drives. In most PC/AT installations, the C: drive is actually at the end of the cable and should retain the terminators. W201 or W1, W2 Terminator Options W201 positions 1-2 and 2-3 (or W1 and W2, respectively, on second board shown) select the source of terminator power (+5V) for the interface terminators. If a jumper is installed at positions 1-2 (W1) and no jumper is installed at position 2-3(W2)(the factory default configuration), the drive provides terminator power. This configuration is used for PC/AT applications. If no jumper is installed at W201 position 1-2(W1) but a jumper is installed at position 2-3(W2), terminator power must be provided by the host computer system via interface connector J1, pin 26. W11 Bus Option W11 (only present on Rev C and higher boards of the second type shown) allows the drive to supply interface terminator power to the SCSI Bus. If W11 is not installed (the factory default configuration), the drive does not supply SCSI bus interface terminator power. W11 should not be installed for PC/AT applications. W5 Spindle Option W5 selects the spindle control option. If W5 is installed, the drive waits for a Start Spindle command (after power is applied) to start the spindle motor. If W5 is not installed (the factory default configuration), the drive automatically starts the spindle motor at power-on. W5 is not installed for PC/AT installations. W4 Bus Parity Check Option W4 selects the parity check option. If W4 is installed, the drive neither generates nor detects parity. If W4 is not installed (the factory default configuration), the drive generates parity and enables parity detection. W4 is not installed most PC/AT applications. Verify the correct configuration required by your Host Adapter. W21 Ground Options W21(only implemented on Rev C and higher boards of the second type shown) is used to connect the drive's logic ground to frame ground. The factory default configuration, which should be used for PC/AT applications, is a jumper installed at W21. W20 Reserved Jumper must be installed |
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Also refer to the notes on installation in HP workstations or in workstations from Sun Microsystems.