Fujitsu M2512A : Specifications Fujitsu M2512A : Specifications
General Specifications
Optical Disk Cartridge : ISO Standard 3.5 inch Optical Disk Cartridge
128MB media 230MB media
Form Factor : 3.5 inch, × 1 inch high
Interface : SCSI-2 (single ended)
Total storage capacity :
Unformatted : 181 MB 325 MB
Formatted : 128 MB 230 MB
Storage capacity/track :
Unformatted : 18,100 bytes 18,100 bytes logical
Formatted : 12,800 bytes 12,800 bytes logical
Storage capacity/sector :
Unformatted : 724 bytes 724 bytes
Formatted : 512 bytes 512 bytes
User tracks/side : 10,000 17,940 logical
The number of user tracks indicates the maximum user zone which includes
the spare and slipping areas.
Alternate sectors per side : >= 1,024 >= 1,025
Sectors per track : 25 25 logical
Data Transfer Rate :
Disk drive : 1.1MB/sec (maximum) 1.3 to 2.1MB/sec (maximum)
Asynchronous mode : 3.3MB/sec maximum 3.3MB/sec maximum
Synchronous mode : 5.0MB/sec maximum 5.0MB/sec maximum
Seek time :
Short stroke (64 tracks) : Less than 18 milliseconds
1/3 stroke : Less than 35 milliseconds
Full stroke : Less than 70 milliseconds
Each seek time specified here is the mathematical average of 100 seeks
and does not include either SCSI overhead or track address recognition
time.
Average latency time 8.3 milliseconds
Rotational speed : 3,600 RPM ±0.05% (ZCAV)
Heads : One head on the positioner
Position type : Linear voice coil motor
Servo tracking method : ISO continuous servo method
Recording density : 24,400 bits per inch 29,300 bits per inch
15,875 tracks per inch 18,256 tracks per inch
Loading time : 5 seconds
This time is from when the optical disk cartridge is inserted to the
time when the drive is ready.
Unloading time : 3.4 seconds
This time is from when the eject button is pressed or the eject command
is issued to when the optical cartridge is ejected.
Load/Unload life : 50,000 operations
Dimensions :
Width x Height x Depth : 101.6mm x 25.4mm x 146.0mm (no panel)
101.6mm x 25.4mm x 150.0mm (single panel)
101.6mm x 25.4mm x 160.0mm (double panel)
Data Buffer 237 KB buffer with read ahead cache
Weight 0.47kg (without bezel)
MTBF 40,000 power on hours or more
Power requirements :
Power consumption : 5.0W ready
7.0W random seek, read, or write
3.5W sleep
Input voltage : Single +5VDC ±5%, 1.4A (2.0A max)
Physical Specifications
Operating :
Temperature : 5°C to 45°C
Gradient : 15°C/hour or less
Relative humidity : 10% to 85% (Non-condensing)
Max. wet bulb temperature : 29°C or lower
Vibration : 0.3G (5 to 500Hz, sine sweep)
Shock : 2.0G (10 milliseconds, half sine pulse)
Altitude : 3,000 metres (10,000 ft) or less
Air flow : 0.05 m³/min. (with single shutter panel and filter)
0.07 m³/min. (with double shutter panel and without filter)
Air purity : Office environment or better
(dust particles : Class 500 million or less)
Acoustic noise : Less than 42dB
Idle :
Temperature : 0°C to 50°C
Relative humidity : 10% to 85% (Non-condensing)
Max. wet bulb temperature : 36°C or lower
Vibration : 1.0G (15 to 500Hz, sine sweep)
Shock : 5.0G (10 milliseconds, half sine pulse)
Altitude : 12,000 metres (40,000 ft) or less
Air flow : 0.05 m³/min. (with single shutter panel and filter)
0.07 m³/min. (with double shutter panel and without filter)
Air purity : Office environment or better
(dust particles : Class 500 million or less)
Transport :
Temperature : -40°C to 60°C (24 hours or less)
Temperature : -20°C to 60°C (24 hours or more)
Relative humidity : 10% to 85% (Non-condensing)
Max. wet bulb temperature : 41°C or lower
Shock : 50G (10 milliseconds, half sine pulse)
Requirements : Packing conditions specified by Fujitsu.