 Designed for the rigours of mobile
computing, the DynaMO 230 Portable delivers high
performance removable/rewritable magneto-optical (MO)
storage in an extremely small package. The drive provides
for easy media interchange between portable, desktop,
server and jukebox systems. State of the
Art Technology
At 18 millimetres high the DynaMO 230 Portable is the
worlds smallest MO drive. This physical size can be
deceptive though as it can store up to 230MB of
information onto industry standard cartridges. It also
reads and writes to 128MB media. The DynaMO 230 Portable
uses Apple Computer's new Powerbook Expansion Bay
connector, allowing "plug and play"
installation into either the 5300 or 190 series of
Powerbooks. Its high performance makes it ideally suited
for near on-line workfile needs including QuickTime,
multimedia, and office automation applications.
Part Numbers and Options
| Model |
Part
Number |
Interface |
Mounting
screws |
| M2541BF |
CA |
ATA-2 |
Not applicable |
Functional Specifications
| Model |
M2541BF |
| Disk
Format |
90 mm MO disk
(ISO 10090) |
90 mm MO disk
(ISO 13963) |
| Storage
Capacity |
unformatted |
181 MB |
325 MB |
| formatted |
128 MB |
230 MB |
| Zones |
- |
10 |
| Track
capacity (formatted) |
12,800 Bytes |
12,800 Bytes
(logical) |
| Track
/side |
10,000 |
17,940
(logical) |
| Sectors
Per Track |
25 |
25 (logical) |
| Sector
Capacity (formatted) |
512
Bytes |
| Seek Time |
1/3 stroke |
65
ms (typ.) |
| full stroke |
less
than 140 ms |
| Average
latency time |
11.1
ms |
| Rotational
speed |
2,700
rpm |
| Recording
Density |
24,400 BPI |
29,300 BPI |
| Track
density |
15,875 TPI |
18,256 TPI |
| Data
Transfer Rate |
to/from
media (max.) |
0.8 MB/s |
1.0 to 1.6 |
| (continuous
write) |
0.19 MB/s |
0.23 to 0.36 |
| (continuous
read) |
0.57 MB/s |
0.69 to 1.1 |
| to/from host |
8
MB/s (with IO Ready), 6 MB/s (without IO Ready) |
| Recording
Code |
RLL
(2/7) |
| Interface |
ATA-2 |
| Head
positioning method |
Direct
Tracks Count |
| Load time |
less
than 7 sec |
| Unload
time |
less
than 6 sec |
| Buffer
size |
128KB |
Physical Specifications
| Power
requirements |
operating |
4.2 W (R/W,
seek)
5 VDC +/- 5%
0.9 A ave. 1.5 A peak
(R/W, random seek)
Max value is excluding peak current
less than 500 microsecond duration. |
| sleep mode |
less than 0.1 W |
| Dimensions |
height |
18.0 mm |
| width |
107.0 mm |
| depth |
145.8 mm |
| Weight |
400 g max. |
| Ambient
temperature |
operating |
5 to 50 °C |
| not
operating |
0 to 55 °C |
| gradient |
15 °C/h
(operating) |
| Relative
humidity |
operating |
10 to 85 %, no
condensing |
| not
operating |
10 to 85 %, no
condensing |
| Vibration |
operating |
0.4 G (5 to 500
Hz, sine sweep) |
| not
operating |
0.6 G (5 to 500
Hz, sine sweep) |
| Shock |
operating |
2.0 G (10 ms,
half sine pulse) |
| idle |
5 G (10 ms,
half sine pulse) |
| transport |
100 G (5 ms,
half sine pulse) |
| Altitude |
operating |
less than 3,000
m |
| not
operating |
less than
12,000 m |
| Acoustic
Noise |
- |
Reliability Specifications
| Mean Time Between
Failures (MTBF) |
40,000 power on
hours |
| Mean Time To Repair
(MTTR) |
Less than 30
minutes |
| 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 |
|
