Specifications: IBM DHEA-38451 8.4-GB
Hard-Disk Drive
|
General | Functionality | Internal Drive
Characteristics | Reliability
| Electrical | Sound Pressure Level | Shock | Physical
| Environmental | Regulatory | Features
 |
NOTE: These specifications
are provided by the manufacturer for information
purposes only and do not constitute an extension
of Dell Computer Corporation's warranty to you.
Dell's warranty is contained in the customer
documentation. |
|
|
| Manufacturer |
IBM |
| Model number |
DHEA-38451 |
| Model name |
Hercules |
| Interface |
Ultra ATA-33 EIDE |
|
| Formatted capacity |
8450 MB* |
| Rotational speed |
5400 rpm |
| Average rotational latency |
5.56 ms |
| Spin-up time |
10 sec (typical) |
| Track density |
10,700 tpi |
| Cache (total) |
472 KB |
| Seek time (without command
overhead, including settling): |
|
Read
|
8.5 ms (typical) |
Write
|
9.5 ms (typical) |
| Disk-buffer transfer (zone 0): |
|
Instantaneous
|
12.1 MB/sec |
Sustained
|
10.2 MB/sec |
| Disk-buffer transfer (zone 7): |
|
Instantaneous
|
6.8 MB/sec |
Sustained
|
5.8 MB/sec |
| Buffer-host (maximum) |
33.3 MB/sec |
| Sector format |
512 bytes/sector |
| Interleave factor |
1:1 |
| PIO data transfer |
mode 4 (16.6 MB/sec) |
| DMA data transfer: |
|
Single-word mode
|
mode 2 (8.3
MB/sec) |
Multiword mode
|
mode 2 (16.6
MB/sec) |
Ultra DMA mode
|
mode 2 (33.3
MB/sec) |
| * 1 MB equals 1,000,000 bytes. |
|
| Read/write heads |
8 |
| Logical head number |
16 |
| Disks |
4 |
| Bytes per sector |
512 |
| Logical sectors per track |
63 |
| Logical cylinder number |
16,384 |
| Data buffer size |
472 KB |
|
| Preventative maintenance |
none required |
| Nonrecoverable read errors |
1 in 1013 bits
read |
| SMART-compliant |
yes |
|
| Voltages |
+5 VDC (� 5%)
+12 VDC (� 5%) |
|
| Idle on track (mean) |
34 dBA |
| Idle on track (maximum) |
38 dBA |
| Random operation (mean) |
39 dBA |
| Random operation (maximum) |
42 dBA |
|
| Operating |
10 G |
| Nonoperating |
75 G |
| * Half-sine
wave, 11-ms maximum duration |
|
| Height |
25.4 mm (1.0 inch) |
| Width |
101.6 mm (4.0 inches) |
| Depth |
146.0 mm (5.74 inches) |
| Weight |
580 grams (1.5 lb) |
|
| Temperature: |
|
Operating
|
5� to 55�C (41� to 131�F) |
Nonoperating
|
-40� to 65�C (-40� to 158�F) |
| Maximum temperature gradient |
15�C/hr
(59�F/hr) |
| Humidity: |
|
Operating
|
8% to 90% (noncondensing) |
Nonoperating
|
5% to 95% (noncondensing) |
| Maximum wet bulb temperature: |
|
Operating
|
29.4�C (84.9�F) |
Nonoperating
|
35�C (95�F) |
| Altitude: |
|
Operating
|
-300 to 3048 m
(-984 to 10,000 ft) |
Nonoperating
|
-300 to 12,000 m
(-984 to 39,370 ft) |
- UL 1950
- CSA standard C22.2 No. 0M91 and No. 950-93
- IEC 950
- TUV EN 60 950
- CE 89/336/EEC
- EMC AS/NZS 3548:1995 Class B
- FCC Class B, Part 15
- EEC 76/889
- VDE requirements of GOP
- Enhanced IDE (Ultra ATA-33) interface
- Closed-loop actuator servo
- Dedicated head landing zone
- Automatic actuator lock
- Segmented buffer implementation
- Write cache
- Advanced ECC on the fly
- Automatic error recovery procedures for
read/write commands
- Power-on and resident diagnostics
- CHS and LBA modes
- Transparent defect management with automatic
defect reallocation (ADR)
- Power-saving modes
|
