Fujitsu
introduces the M2513A, the world's first 640MB ISO
standard magneto-optical disk drive(MO), which is
designed for integration into desktop PCs, workstations,
subsystems and jukeboxes. The MO cartridge is
approximately the same size as an existing 3.5"
floppy disk but stores 440 times their capacity. This is
the equivalent capacity to a CD-ROM, however, the MO can
written to an almost unlimited number of times whilst
CD-ROMs are limited to only reading stored data. Unlike
conventional magnetic media such as hard disks, MO
cartridges are less likely to be affected by physical
shock and are totally unaffected by magnetic fields in a
normal environment.
The M2513A offers excellent performance with an
approximate 35 millisecond average seek time to data,
which can be further enhanced when the generous 512K
buffer is actively used. The robustness of the media
makes this device the ideal solution for not only
distributing large amounts of data in place of CD-ROM but
for backing up important data instead of to tape. The
capacity lends itself favourably to data-intensive,
capacity hungry multimedia applications such as video,
graphic, photographic and sound files.

Drive Features
 |
ISO standard which offers
backward compatibility with all previously
manufactured media such as 230MB and 128MB. |
 |
Write-cache function
enabling rapid data transfer. |
 |
Verify or non-verify after
write option speeds performance especially
for the requirements of MM producers, graphic
artists, musicians, and the video
professional. |
 |
On-board selectable ACTIVE
terminator. |
 |
Low power consumption
including software selectable three-step
sleep mode. |
 |
640MB high capacity |
 |
3,600 RPM |
 |
Compatibility with most
available systems such as IBM-compatible PCs,
Macintosh, and SUN. Switch selectable on PCA. |

Part Numbers and
Options
| M2513A |
CA01338-B201 |
| 640MB magneto-optical
disk cartridge |
CA9000-C013 |
| 640MB LIMDOW
magneto-optical disk cartridge |
CA9000-C043 |
| 540MB magneto-optical
disk cartridge |
CA9000-C012 |
| Head Cleaner |
CA90002-C980 |
| Disk Cleaning Kit |
CA90003-0702 |

Functional
Specifications
| Model |
M2513A |
| Disk
Format |
90 mm MO disk
ISO 10090 |
90 mm MO disk
ISO 13963 |
90
mm MO disk
CD 15041 |
| Storage
Capacity |
unformatted |
181 MB |
325 MB |
819 MB |
818 MB |
| formatted |
128 MB |
230 MB |
538 MB |
643 MB |
| Zones |
- |
10 |
18 |
11 |
| Track
capacity (formatted) |
12,800 Bytes |
12,800
Bytes (logical) |
34,816 Bytes
(logical) |
| Track
/side |
10,000 |
17,940
(logical) |
42,042
(logical) |
18,480
(logical) |
| Sectors
Per Track |
25 |
25
(logical) |
17 (logical) |
| Sector
Capacity (formatted) |
512
Bytes |
2,048 Bytes |
| Seek
Time |
1/3
stroke |
35
ms or less |
| full
stroke |
70
ms or less |
| Average
latency time |
8.3
ms |
| Rotational
speed |
3,600
rpm |
| Recording
Density |
24,400 BPI |
29,300 BPI |
52,900
BPI |
| Track
density |
15,875 TPI |
18,256 TPI |
23,090
TPI |
| Data
Transfer Rate |
to/from
media (max.) |
1.09 MB/s |
1.3 to 2.1 MB/s |
2.3
to 3.9 MB/s |
| (continuous
write) |
- |
0.31 to 0.49
MB/s |
0.51 to 0.86
MB/s |
0.61 to 1.02
MB/s |
| (continuous
overwrite) |
- |
0.46 to 0.73
MB/s |
0.72 to 1.29
MB/s |
0.92 to 1.53
MB/s |
| (continuous
read) |
0.76 MB/s |
0.92 to 1.47
MB/s |
1.54 to 2.58
MB/s |
1.84 to 3.07
MB/s |
| to/from
host |
5
MB/s (async.), 10 MB/s (sync.) |
| Recording
Code |
2-7
RLLC |
1-7
RLLC |
| Interface |
SCSI-2
(Single-ended) |
| Head
positioning method |
Direct
Track Count |
| Load
time |
7
sec or less |
| Unload
time |
4
sec or less |
| Buffer
size |
2MB
as standard |

Physical
Specifications
| Power
consumption |
operating |
8 W (R/W, seek) |
| sleep mode |
1.5 W |
| Dimensions |
height |
25.4 mm |
| width |
101.6 mm |
| depth |
146.0 mm |
| Weight |
470 g (without
bezel) |
| Ambient
temperature |
operating |
5 to 45 °C |
| not
operating |
0 to 50 °C |
| gradient |
15 °C/h
(operating) |
| Relative
humidity |
operating |
10 to 85 %, no
condensing |
| not
operating |
5 to 90 %, no
condensing |
| Vibration |
operating |
0.4 G (5 to 500
Hz, sine sweep) |
| not
operating |
1.0 G (5 to 500
Hz, sine sweep) |
| Shock |
operating |
2.0 G (10 ms,
half sine pulse) |
| not
operating |
50 G (10 ms,
half sine pulse) |
| Altitude |
operating |
3,000 m |
| not
operating |
12,000 m |
| Acoustic
Noise |
38dBA |

Reliability
Specifications
| Mean Time Between
Failures (MTBF) |
60,000 power on
hours |
| Mean Time To Repair
(MTTR) |
Less than 30
minurtes |
| Component Life |
5 years |
| Recoverable errors |
10 per 10^5
bits read |
| Unrecoverable errors |
10 per 10^13
bits read |
| Seek errors |
10 per 10^7
seeks |
|