 Ever since 1991 Fujitsu has been committed
to 3½ inch magneto-optical (MO) technology and the
arrival of the M2532B completes its extensive range of
products that use this ultra reliable medium for data
storage. The library contains either one or two of the
highly acclaimed Fujitsu M2513A 640MB disk drives
offering a capacity of up to 22GB of near-line storage
when fully populated. The disks themselves are resident
in three magazines each holding 12 cartridges on a
sliding, motorised tray allowing fast changes of data
volumes by the user. This tray load facility allows
magazines to be pre-loaded at will, lending itself well
as a magneto-optical disk duplicator, and a range of
third-party software solutions for all major operating
system platforms (Macintosh, DOS, Windows, and Novell)
make it ideal for conventional optical library duties
such as two-tier hierarchical storage management on
network servers. Even when connected locally to a
personal computer the library excels itself as a
preferred mass data storage medium for such applications
as desktop publishing, multimedia authoring and playback,
computer aided design, backup, archiving and successfully
fulfils the demand for the ever increasingly popular
small office activity of document image processing (DIP).
The library’s dimensions belie its substantial
capacity - at only 15 centimetres high, 34 centimetres
wide and 43 centimetres deep the unit is no larger than
an average modern computer base unit, and with few overly
complex installation requirements this library can become
an elegant and yet unobtrusive addition to the desktop
and office environment.
Features
 |
One or two drive model. |
|
Uses the M2513A disk drives. |
|
Automatic cleaning facility |
|
Up to 22.5GB storage |
|
Fast data transfer rate (up to
3.9MB/second) |
Part Numbers and Options
| Model |
Part
Number |
Interface |
| M2532B1 |
CA01588-B311 |
SCSI-2
single-ended |
| M2532B2 |
CA01588-B312 |
Functional Specifications
| Model |
M2532B |
| Storage
Capacity |
22.4GB
/ 18.5GB (8.05GB with 230MB media) |
| Cartridge
Capacity |
unformatted |
181 MB |
325 MB |
819 MB |
818 MB |
| formatted |
128 MB |
230 MB |
538 MB |
643 MB |
| Sector
Capacity |
512
Bytes |
2048 Bytes |
| Zones |
- |
10 |
18 |
11 |
| Number of
cartridges |
35 |
| Number of
cleaning cartridge cells |
1 |
| Number of
drives |
model B1 |
1 |
| model B2 |
2 |
| Number of
accessors |
1 |
| Number of
magazines |
3 |
| Cartridge
handling time |
Max.
7.5 seconds, Ave. 6.0 seconds |
| 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/ |
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 |
accessor |
SCSI-2 (Single-ended) |
| disk
drives(s) |
| Head
positioning method |
Direct
Track Count |
| Disk Drive
Load time |
7
sec or less |
| Disk Drive
Unload time |
4
sec or less |
| Buffer
size |
512
KB |
Physical Specifications
| Input
power |
voltage |
100 - 120, 200
- 240 VAC ±10% |
| frequency |
50 / 60 Hz |
| Power
consumption |
Model B1 |
Max. 50W, Ave.
20W |
| Model B2 |
Max. 50W, Ave.
29W |
| Dimensions |
height |
153 mm |
| width |
345 mm |
| depth |
430 mm |
| Weight |
Max. 15 kg |
| Ambient
temperature |
operating |
5 to 35 ºC |
| gradient |
10 ºC/hour |
| Relative humidity |
operating |
20 to 80 % RH
(No condensation) |
| Vibration |
operating |
0.3 G, 5 to 60
Hz |
| Altitude |
operating |
less than 3,000
m |
| Acoustic
Noise |
50 dBA or less |
Reliability Specifications
| Mean Time
Between Failures (MTBF) |
Model B1 |
27,000 power on
hours |
| Model B2 |
45,000 power on
hours |
| Mean Swaps
Between Failure (MSBF) |
200,000 swaps |
| Mean Time
To Repair (MTTR) |
Less than 30
minurtes |
| Drive
recoverable errors |
10 per 10^5
bits read |
| Drive
unrecoverable errors |
10 per 10^13
bits read |
| Drive seek
errors |
10 per 10^7
seeks |
|
