3 1/2-INCH 127 MB REWRITABLE OPTICAL DISK DRIVE
MODEL MTA-3127
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AN OEM OFFERING FROM IBM
- Low profile
- Low power
- Low weight
- Low price
This newest magneto-optical drive from IBM offers the industry's lowest
power dissipation, at only 4.3 watts average, in a low 1-inch-high
vertical profile. At just 17 ounces, the drive is the lightest in its
class. Sophisticated sealing of the optical components gives enhanced
protection against contamination. This new model replaces, and is
compatible with, the IBM Model MD3125B and it provides outstanding
price/performance.
The Rewritable Optical Disk Drive attaches via the industry-standard
SCSI-2 interface. The IBM 127 MB Rewritable Optical Cartridge conforms
to ANSI- and ISO-developed standards for optical media.
The drive supports 127 MB rewritable (MO). 122 MB optical read-only
media (O-ROM) and 122 to 127 MB partial read-only (P-ROM) media.
As with all other IBM optical drives, this drive features the
autowrite calibration sequence. Unique to IBM, this feature optimizes
the laser power used for read/write operations to ensure consistently
high performance across a wide range of environmental conditions and
differing media.
HIGHLIGHTS
- One-inch vertical profile
- 4.3 watts power dissipation (average). 7.5 watts (maximum)
- Needs only a single five-volt power source
- Weight 17 ounces
- SCSI-2 interface
- 3000 RPM
- 40 m/sec average seek
- Conformance to ISO/IEC 10090
- Automatic write calibration for assurance of media interchangeability
- Compatible with MD3125A and MD3125B
- 243 kbyte read-ahead buffer
- Integrated controller/drive electronics
- Selection jumpers for customization
- Unit attention disablement
- SCSI parity disablement
- Device type in Inquiry Data (07h, 00h)
- Special mode page support
- Auto spin up
- Rewritable, O-ROM, and P-ROM media support
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PRODUCT DESCRIPTION
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3 1/2" 127 MB Rewritable Model MTA-3127
Optical Drive
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Interface SCIS-2
Rotational Speed 3000 RPM
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Data Transfer Rate
Disk to Data Buffer
(Burst) 7.25 Mbits/sec
Disk Buffer to SCSI
(Burst) 5.0 MB/sec (sync)
2.5 MB/sec (async)
User Data Rate 625 KB/sec (1 KB = 1024 bytes)
Latency 10 ms
Seek Time
Average Random 40 ms
Trk/Trk 1 ms
Ready Time
Power On to Ready 12 seconds
Cartridge Load to Ready 9 seconds
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Reliability Specifications
MTBF 40,000 Power-on hours
Read Error Rate (Corrected) 1 error 1E 12 bits transferred
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Environmental Characteristics
Temperature 10 to 40 degrees C
(50 to 104 degrees F)
Operating 0 to 60 degrees C
(32 to 140 degrees F)
Storage -40 to 60 degrees C
Shipment (-40 to 140 degrees F)
Shock
Operating 5 G (11 msec half-sine pulse)
Non-Operating 35 G (11 msec square pulse)
Vibration
Operating 0.25 G RMS (1 to 500 Hz)
Cooling Air Flow .88 CFM (min) outgoing through bezel
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DC Power Requirements Total Power
Nominal Supply 5 V
Tolerance (incl ripple) + or - 5%
Power Consumption (Idle) 4.0 W rms
Power Consumption (Max) 7.5 W rms
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Physical Size
Height 25.4 mm
Width 101.6 mm
Depth
Drive 169.0 mm
Weight 0.481 kg
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Special Disk Cartridges
Capacity
Rewritable 127 MB
Read Only (O-ROM) 122 MB
Partial O-ROM 122-127 MB
Sectors per Track (512 bytes) 25
User Tracks 10000
Recording Density 24400 BPI
Track Density 15900 TPI
Standard ISO/IEC 10090
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Product Description data represents IBM's design objectives and is
provided for comparative purposes; actual results may vary depending
on a variety of factors. This product data does not constitute a
warranty. Questions regarding IBM's warranty terms or methodology
used to derive this data should be referred to your IBM representative.
Data subject to change without notice.
IBM Storage Systems Division's development and manufacturing operations
are ISO 9001 certified.
Copywrite International Business Machines Corporation 1994
* IBM is a trademark or registered trademarks of the
International Business Machines Corporation.
