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Bandwidth Usage
While ReQuest strongly recommends placing an IMC, its SPOS server, and any configured NAS together on their own switch, sometimes it is necessary to install an IMC on the home's main network. This chart documents the network bandwidth requirements of IMC media operations in several common situations, indicates the number of simultaneous operations of that kind can be supported, and the common name for that transfer speed.
Common Bandwidth Usage
|
|
Bytes/Sec |
1000 |
100 |
10 |
|
| DVD Archival from SPOS server to NAS |
11,080,000 |
4 |
* |
0 |
8x DVD |
| DVD Archival from IMC to NAS |
5,540,000 |
8 |
1 |
0 |
4x DVD |
| CD Archival from SPOS server to NAS |
2,457,600 |
16 |
2 |
* |
16x CD |
| DVD Playback on IMC from SPOS server or NAS |
1,385,000 |
32 |
3 |
0 |
1x DVD |
| WAV Playback on IMC set to stream from
server |
176,400 |
lots |
23 |
2 |
1x CD |
| FLAC Playback on IMC set to stream from
server |
105,900 |
lots |
39 |
3 |
0.6x CD |
| MP3 Playback on IMC set to
stream from server |
320 = 40,000 |
lots |
104 |
10 |
|
|
128 = 16,000 |
lots |
550 |
26 |
|
| Streaming Station Playback |
320 = 40,000 |
lots |
104 |
10 |
|
|
8 = 1,000 |
lots |
lots |
lots |
|
|
PLEASE NOTE:
- The archival process from an IMC or SPOS server has several different phases, including metadata lookup, which causes it to use lower transfer rates than those listed.
- Ethernet switches are rated for their
maximum *theoretical* transfer rates (e.g. "10/100/1000") in *bits* per
second, not *bytes* per second; the maximum *sustained* transfer rates
are almost always below this theoretical maximum (sometimes as low as
25-30% of maximum).
- All transfer rates listed have been
confirmed experimentally under common, real-world, known good conditions
with a NAS. When a SPOS server archives a CD or DVD to a NAS on a 10
or 100 kbps network, it will operate below it maximum speed and consume
all available bandwidth until completion.
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