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I will have DVD quality (assmume 720 × 576) MP4, normally 720M per hour, thats 1638.4bit per seconds

On Gigabyte Ethernet, it's 1G bit bandwidth, 1 073 741 824 bit, which in theory 655,360 computers in network can play the MP4 smoothly simultaneously, which a very big number, I must be some place wrong, where do I get it wrong.

Also, to support 1G bandwidth, what kind of interface need for server to read the data, which consider:

  • USB 1.1 = 12 Mbit/s
  • Firefire 400 = 400 Mbit/s
  • USB 2.0 = 480 Mbit/s
  • FireWire 800 = 800 Mbit/s
  • USB 3.0 = 5 Gbit/s
  • eSATA = Up to 6 Gbit/s right now as it depend on the internal SATA chip. ref

So any internal harddisk (no RAID), or a USB3 or eSATA hard disk is enough, right?


Allow me to simplified my question:

Q1: For 1 Single Server on Gigabit network (all nodes are Gigabit cards etc), how many client pc can play DVD quality MP4 smoothly?

Q2: If I like to put the data on external storage, what kind of interface should I use.


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closed as not a real question by Ƭᴇcʜιᴇ007, Breakthrough, Mokubai, Indrek, Nifle Sep 23 '12 at 20:13

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

You're wrong in your very first sentence. 720 MBytes per hour is 5.76 Gbits per hour, or 1.6 Mbits per second. – Steven Monday Sep 23 '12 at 16:12
You need a Gigabit(not Gigabyte) switch, with all devices on the receiving end also having a Gigabit interface and all Ethernet cables should be at least Cat5e for a proper Gigabit network. On the Internal hard disk part, any relatively modern disk should be enough. – kedar Sep 23 '12 at 16:23
Hi @StevenMonday, I do say its "1638.4bit per seconds". I really like to know how many clientscan a single server support in one Gigabit network. – Eric Yin Sep 23 '12 at 17:35
@EricYin 1600 bits/sec is 1.6 kbits, not 1.6 Mbits. Steven Monday is correct. – Breakthrough Sep 23 '12 at 17:37

If you take an hour-long MP4 as a benchmark, this yields a bandwidth of roughly:

(700 MiB * 1024 kiB/MiB) / (60 mins/hour * 60 sec/min) = ~200 kiB/sec

So long as your network/storage media can handle this rate, playback will be instantaneous and you can stream live. You can still play back media at a higher rate than the available bandwidth, but this implies that some buffering has to happen before the media can be played back.

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