Fujitsu M2511A : Specifications Fujitsu M2511A : Specifications
Functional Specifications
Optical Disk Cartridge : ISO standard 90mm - Type A
Form Factor : 3.5 inch, × 1 inch high
Interface : SCSI-2 (single ended)
Total storage capacity :
Unformatted : 181MB
Formatted : 128MB
Storage capacity/track :
Unformatted : 18,100 bytes
Formatted : 12,800 bytes
Storage capacity/sector :
Unformatted : 724 bytes
Formatted : 512 bytes
User tracks/side : 10,000
The number of user tracks indicates the maximum user zone which includes
the spare and slipping areas.
Alternate sectors per side : Less than/equal to 1,024
Sectors per track : 25
Data Transfer Rate :
Disk drive : 1.09MB/sec (maximum)
0.256MB/sec continuous writing
0.768MB/sec continuous reading
Asynchronous mode : 2.7MB/sec maximum
Synchronous mode : 4.0MB/sec maximum
The maximum SCSI data transfer rate may be limited by the initiator
response time, SCSI bus characteristics, and/or transfer distance (i.e.
length of cable)
Average seek time : 30 milliseconds
Seek time does not include the address confirmation time. The average
seek time may vary due to disk eccentricity in the range of 25 to 35
milliseconds.
Average latency time 8.3 milliseconds
Rotational speed : 3,600 RPM ±0.1%
Heads : One head on the positioner
Position type : Linear voice coil motor
Servo tracking method : ISO continuous composite
Recording density : 24,400 bits per inch
15,875 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 seconds
This time is from when the eject button is pressed or the eject command
is issued to when the optical cartridge is out of the drive.
Load/Unload life : 50,000 operations
Dimensions :
Width x Height x Depth : 101.6mm x 25.4mm x 146.0mm (no bezel)
101.6mm x 25.4mm x 150.0mm (single shutter bezel)
101.6mm x 25.4mm x 160.0mm (double shutter bezel)
Data Buffer 256 KB buffer with read ahead cache
Weight 0.55kg
MTBF 30,000 power on hours or more
Power requirements :
Power consumption : 10W reading, writing, erasure.
12W maximum during seek
Input voltage : +5VDC ±5%
2.0A (typical read, write without termination)
2.4A (maximum, seek, without termination)
Environmental Specifications
Operating :
Temperature : 5°C to 45°C (measured 3cm from disk enclosure)
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 bezel and filter)
0.07 m³/min. (with double shutter bezel and without filter)
Air purity : Office environment or better (dust particles : Class 1 million or less)
Idle :
Temperature : 0°C to 50°C (measured 3cm from disk enclosure)
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 bezel and filter)
0.07 m³/min. (with double shutter bezel and without filter)
Air purity : Office environment or better (dust particles : Class 1 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.
Safety Standards
This drive meets or exceeds the following safety standards :
UL1950(U.S.A.) : Recognised No. : E133157, Vol 30, Sec. 2
CDRH(U.S.A.) : Certified No. : 9220224
CSA C22.2 No. 950 : Certified No. : LR51352C-B010
EN60950(Germany) : Licence No. : R9251491
VDE0836, VDE0837 (IEC825), and VBG93(Germany) : Licence No : R9251491