Posted by Jan Panteltje on 02/22/07 20:14

On a sunny day (Thu, 22 Feb 2007 14:35:11 -0500) it happened "Smarty"
<nobody@nobody.com> wrote in <IeWdnaWQ04rybUDYnZ2dnUVZ_qemnZ2d@adelphia.com>:

>Jan,
>
>What a refreshing and intelligent reply! I've done a bit of research on this
>specific topic, and it appears that "Port Multiplication" with SATA drives
>in a RAID is an available and more than adequate solution. The web link
>cited below shows simple to achieve 230 MB/sec performance and offers a
>solution up to around 265 MB/sec as well.
>
>
>http://www.macgurus.com/productpages/sata/PortMultiplicationGuide.php
>
>This will certainly fill disk drives quickly!!
>
>Given that cable boxes and satellite boxes are not generally providing HDCP
>over HDMI, this would appear to be an alternative method to directly capture
>cable and satellite HDTV at full resolution.
>
>Smarty

Good info, thank you, good to know somebody already did all this..
Yes, it will take a lot of space:
at 200 MB / s for 90 minutes 90 x 60 x 200 = 1 080 000 MB say 1.1 Tera Byte.
That is if you wanted to record a movie.
It would not be so good if you recorded from a settop box, or even from a DVD player,
as the source would be mpeg2 or similar, and that is better recorded as .ps or
transport stream, taking much less space.
But for directly from a HD camera it is the right stuff.
Then you need more space for editing, at least double the space, 10TB would be nice.
Now let's extrapolate a bit:
In the 1980 ties we were at 10MB for a harddisk.
Now, say 20 years later, we are at 500 MB.
A factor 50 in 20 years.
So perhaps 10 years from now we have the 12 TB harddisks....
In 5 years from now the 6 TB, and that would be enough already.
Just to know where it will go :-)

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