 The advanced-technology,
high-performance, low profile SCSI drive with 4.35 GB of
formatted capacity. With the rapid growth of enterprise-wide
networks and robust applications like multimedia
production and CAD/CAM, today's high-end computer systems
literally devour storage capacity. To meet the demands of
these high-end work stations, servers and mid-range
computers, Fujitsu created the M2954, the highest
performance and capacity 3.5-inch drive in its class. The
M2954 blends advanced technologies and proven engineering
expertise in a compact, power saving package to deliver a
massive 4.35GB of formatted storage, seek times as low as
10.0 ms, internal transfer rates of up to 14.0 megabytes
per second and industry-leading MTBF ratings.
Uncommon Performance / Maximum
Capacity
The M2954 combines advanced
magneto-resistive (MR) head technology and digital read
channel (PR4ML) electronics along with advanced caching
strategies to deliver the ultimate in reliable data
storage performance and capacity. Rotational speeds of
7,200 RPM, low 4.17 ms latency, fast seek times, rapid
10/20/40 MB/s interface burst transfer rates, spindle
synchronisation, and a host of other performance-driven
features make the M2954 a mass-storage leader.
Advanced Technology
Fujitsu was one of the first disk drive
makers to consistently deliver volume production of
reliable MR head technology and PR4ML electronics to the
mass storage market. A world-wide technology leader,
Fujitsu combines more than 25 years' experience and
unparalleled expertise in computer and peripheral design
and manufacture to deliver leading-edge data storage
solutions.
Outstanding Reliability
In the computing world, Fujitsu has
long been recognised as a leader in quality and
reliability. The M2954 clearly demonstrates this
long-held commitment, as evidenced by the drive's
industry-leading MTBF and five-year warranty. When the
application demands leading-edge performance and
exceptional capacity in a power-saving 3.5-inch, by one
inch high form factor, you can rely on Fujitsu's advanced
M2954 hard disk drive.
Features
 |
4.35GB of formatted
storage |
|
Magneto-Resistive (MR)
heads |
|
High internal data
transfer rate (up to 14.0 MB/s) |
|
Fast 7,200 RPM spindle
rotational speed |
|
Rapid 10 ms seek time |
|
Read ahead cache/write
cache |
|
512 KB adaptive cache
buffer |
|
Fast/Wide SCSI-2
interface, Differential, Fast 20/40, SCA |
|
Audio/Video optimised and
multimedia ready |
|
1,000,000-hour MTBF |
|
Five-year warranty |
Part Numbers and Options
| Model |
Part
Number |
Interface |
| M2954SAU |
CA01407-B503 |
Fast SCSI-2
single ended |
| M2954SYU |
CA01407-B513 |
Fast-20 SCSI-2
single ended |
| M2954QAU |
CA01407-B523 |
Fast wide
SCSI-2 single ended |
| M2954RAU |
CA01407-B533 |
Fast wide
SCSI-2 Differential |
| M2954EAU |
CA01407-B563 |
Fast wide
SCSI-2 with SCA-2 connector single ended |
Functional Specifications
| Model |
M2954SA/SY |
M2954Q |
M2954R |
M2954E |
| Storage
Capacity |
formatted |
4.35 GB |
| unformatted |
5.4 GB |
| Disks |
5 |
| Heads |
data |
9 |
| servo |
1 |
| Formatted
Track capacity |
77,214 to 109,173 bytes (13 zones) |
| Bytes per
sector |
512 |
| Cylinders |
5,713 |
| Sectors/Track |
129 to 186 (13 zones) |
| Seek Time |
track to track |
Read 0.8 ms (typ.) / Write 1.0 ms (typ.) |
| average |
Read 8.0 ms (typ.) / Write 9.0 ms (typ.) |
| maximum |
Read 17.0 ms (typ.) / Write 18.0 ms
(typ.) |
| Average
latency time |
4.17ms |
| Rotational
speed |
7,200 rpm |
| Recording
density |
83,603 to 118,737 bpi (13 zones) |
| Track
density |
6,438 tpi |
| Data
transfer rate |
to/from media |
9.5 to 14.0 MB/s |
| to/from host |
6MB/s |
12MB/s (asynchronous mode) |
| |
10/20MB/s |
40MB/s (synchronous mode) |
| Recording
code |
RLL 8/9 (0, 4, 4) |
| Interface |
Fast/
Fast20 narrow SCSI-2 |
Fast 20 wide SCSI-2 |
Fast
20 wide SCSI-2 with SCA-2 connector |
| single ended |
differential |
single
ended |
| Head
positioning method |
ROTARY VCM |
| Start time |
30 sec. (typ.), 60 sec. (max.) |
| Stop time |
30 sec. (typ.) |
| Buffer
size |
512KB |
Physical Specifications
| Power
Requirements |
12V ±5% operating |
0.57A
(ave.), 2.0A (peak) |
| 5V: ±5% operating |
1.0A
(Sx), 1.1A (Qx/Ex) |
| 12V ±5% startup |
3.0A
(peak < 100µs) |
| 5V: ±5% startup |
1.0A
(Sx), 1.1A (Qx/Ex) |
| Dimensions |
height |
25.4mm |
| width |
101.6mm |
| depth |
146.0mm |
| Weight |
0.6kg |
| Ambient
temperature |
operating |
5°C
to 50°C |
| not operating |
-40°C
to 60°C |
| gradient |
15°C/H
(Max.) |
| Relative
humidity |
operating |
20%
to 80% |
| not operating |
5%
to 95% (non condensing) |
| max. wet bulb |
29°C |
| Vibration |
operating |
1.0G
Max. (5 to 250Hz) |
| not operating |
5G
Max. (5 to 250Hz) |
| Shock |
operating |
5G
Max. (10ms) |
| not operating |
50G
Max. (10ms) |
| Altitude |
operating |
3,000m
(Max.) |
| not operating |
12,000m
(Max.) |
| Acoustic
noise |
- |
Reliability Specifications
| Mean Time Between
Failures (MTBF) |
1,000,000 Power
on Hours |
| Mean Time To Repair
(MTTR) |
less than 30
minutes |
| Component Life |
5 years |
| Recoverable errors |
- |
| Unrecoverable errors |
10 per 10^15
bits read |
| Seek errors |
10 per 10^8
seeks |
| Start/stop cycles |
- |
|
