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ND Computer Systems¶
ND 585, 586, 587 Cartridge Disk Drives¶
| Model | Type | Capacity |
|---|---|---|
| ND 585 | Cartridge Disk Drive | 30 Mb |
| ND 586 | Cartridge Disk Drive | 60 Mb |
| ND 587 | Cartridge Disk Drive | 90 Mb |
Introduction¶
The ND 585, ND 586, and ND 587 are high-performance, random access storage devices with a capacity of 30, 60, or 90 Mbytes. The disks feature a removable, front insertable, top-loading cartridge of 15 Mbytes, with a fixed disk capacity of 15, 45, or 75 Mbytes.
Features¶
- Quick access time
- High data transfer rate
Additional Features¶
- Daisy chaining of up to 4 drives on one ND 558 or ND 559 controller
- Quiet unit (Substantial reduction of noise level)
- Unique front insertable receiver for high performance top-loading cartridge
- Address mark generation and detection
- Servo offset with early/late data strobing
- Automatic write precompensation
- Automatic write current control
- Independent, manual write protection of cartridge and/or fixed media
- Internal faulty monitoring
- Integral power supply
- Dynamic braking system
[Photo: ND Computer Systems Disk Drive]
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Product Description¶
The disk unit consists of 15 Mbytes of removable front-load cartridge capacity, 15 (ND 585), 45 (ND 586), or 75 (ND 587) Mbytes of fixed media capacity, front control panel, cartridge receiver, spindle, AC blower system, braking system, read/write and servo heads, voice coil positioner and track-following servo, air filters, and integral power supply. A logic chassis contains read/write, microprocessor, input/output servo, and drive control electronics.
A rotation speed of 3600 revolutions per minute enables the CMD to operate at a 9.677 mHZ data rate. Head positioning is performed through the use of a field-proven closed-loop proportional servo system, with both acceleration and velocity feedback. The carriage is driven by a voice coil linear actuator, utilizing positioning information from a dedicated disk surface on the cartridge. If the fixed disk option is exercised, the user has a dedicated surface on one of the fixed disks. Field proven read/write heads provide a high degree of data integrity and servo accuracy. Dimensional integrity (necessary for the recording system) is provided for by a precision spindle which is mounted in a rigid cast aluminum deck and insures positive registration and seating of the cartridge to the spindle.
| Unit | Bytes |
|---|---|
| Unit ND 585 | 30302208 |
| Unit ND 586 | 60604416 |
| Unit ND 587 | 9090624 |
| Transfer rate | 9.677 mHZ |
|---|---|
| Media | 15 Mbytes cartridge disk pack ND 588 |
Power Requirements¶
- Voltage AC: 220V + 15, —22
- Watts: 950 operating, 300 stand-by
- Hertz: 50 +0.5, –1.0
Reliability¶
- MTBF: 4000 hours
- Error rate:
- Recoverable — less than 1 in 10^10^ bits transferred
- Unrecoverable — less than 1 in 10^12^ bits transferred
- Access Error — less than 1 in 10^6^ seeks
Environmental Limits¶
- Temperature range: 10°C to 35°C
- Humidity: 20% to 80% RH
- Altitude: —305 m to + 3048 m
Power requirements: Standard international single phase voltages at 50/60 Hz
Specifications¶
- Maximum seek time: 55 ms
- Maximum track-to-track seek time: 6 ms
- Average seek time: 30 ms
- Spindle speed: 3600 rpm
- Average latency time: 8.33 ms
- Maximum latency time: 17.3 ms
Net Capacities Per¶
| Sector | 1024 bytes |
|---|---|
| Track | 18432 bytes |
Cylinder¶
| ND 585 | 36864 bytes |
|---|---|
| ND 586 | 73728 bytes |
| ND 587 | 110592 bytes |
Mechanical Dimensions¶
The disk unit is mounted in a cabinet which has the following dimensions:
| Height | 96 cm |
|---|---|
| Width | 54 cm |
| Depth | 89.5 cm |
Two disk units may be mounted in one cabinet.
Dimensions for the Disk Unit¶
| Height | 26.7 cm |
|---|---|
| Width | 48.3 cm |
| Depth | 76.2 cm |
| Weight | 79.5 kg |
ASCII Diagram Placeholder
Contacts
- Norway
- NORSK DATA A/S
- Jerikoveien 20, Box 4 - Lindeberg gård
- OSLO 10
- Sweden
- ND NORSK DATA AB
- Kanalvägen 3, BOX 2031
- France
- NORSK DATA FRANCE
- “Le Bernard”, Avenue du Jura
- England
- NORSK DATA Ltd.
- NORD House, 17 Balfe Street, King's Cross
- LONDON N1 9EB
- Denmark
- NORSK DATA ApS
- Overvænget 5
- West Germany
- NORSK DATA DEUTSCHLAND GmbH
- Abraham-Lincoln-Str. 30
- 6200 WIESBADEN
- Tel.: 0612-174620, tix. 4186370 noda d
- U.S.A.
- NORSK DATA N.A., Inc.
- 65, William Street
- Wellesley, MASS. 02181
- Tel. 0617-237.7945, tix. 921740 norsk well
NOTE: NORSK DATA reserves the right to change specifications at any time without notice!