Yes, it does sound like an idling jet...
The following figure describes the acoustical noise emission values
(sound pressure
levels) for the Server 95 and Server 95A.
+-----------------------------------------------------------------+
| Acoustical Specifications
|
|-----------------------------------------------------------------|
|
| | LWAd IN
|
|
|
|
| | BELS
| LpAm IN DB | <LpA>m IN DB |
|
| |--------------+--------------+---------------|
| DESCRIPTION|CONFIG|OPERATE|IDLE |OPERATE| IDLE |OPERATE|
IDLE |
|------------+------+-------+------+-------+------+-------+-------|
| Server 95 | A | 5.4 |
5.3 | 36 | 35 | 37 |
36 |
|------------+------+-------+------+-------+------+-------+-------|
| Server 95 | B | 5.7 |
5.7 | 39 | 39 | 41 |
41 |
|------------+------+-------+------+-------+------+-------+-------|
| Server 95A | C | 5.8 | 5.8
| 40 | 40 | 42 |
42 |
|-----------------------------------------------------------------|
| SYMBOLS|
|
|--------+--------------------------------------------------------|
| Config | Configuration
|
|--------+--------------------------------------------------------|
| A | Single hard disk drive with
fan on low speed
|
|--------+--------------------------------------------------------|
| B | Single hard disk drive with
fan on high speed
|
|--------+--------------------------------------------------------|
| C | Three-disk array with fan on
high speed
|
|--------+--------------------------------------------------------|
| LWAd | The declared sound power level for a random
sample of |
| | machines
|
|--------+--------------------------------------------------------|
| LpAm | The mean value of the A-weighted sound pressure
levels |
| | at the operator position
(if any) for a random sample |
| | of machines
|
|--------+--------------------------------------------------------|
| <LpA>m | The mean value of the A-weighted sound pressure levels
|
| | at the one-meter
(bystander) positions for a random |
| | sample of machines
|
|-----------------------------------------------------------------|
| NOTES:
|
|-----------------------------------------------------------------|
| All measurements are made in accordance with ANSI S12.10 and
are|
| reported in conformance with ISO 9296.
|
|-----------------------------------------------------------------|
| Above data based on preproduction machines.
|
+-----------------------------------------------------------------+