Re: [Avid-L2] QT Pro exporting to USB Rugged Mini?

Often, those small bus powered drives are only 5400RPMs. Also, I have been
told that USB is a poor interface for large file stream/copy operations.
The operating system will disrupt a USB-based process more readily than,
say, a firewire-based one. This is anecdotal info and my terminology is
probably wrong but my experience seems to confirm this (as well as matching
up with what you're seeing).

-Rob Lawson
CBS News.

On Sunday, April 1, 2012, johnrobmoore <bigfish@pacbell.net> wrote:
>
>
> Upon further investigation I made a QT to the internal drive and the
activity monitor showed data write speeds at around 37-40 MB/sec and the
file was created much faster. Sure that's a no brainer now that I look at
it but once the 60 gig file was complete it then takes almost an hour just
to transfer to the LaCie Rugged Mini so there is a serious performance hit
when exporting directly to the mini so it would seem. I don't know why we
aren't just sending raw drives as I'm sure those are acceptable to the
network folks. They choose the mini's because they don't require a power
supply but no one thought about all the time lost to slow transfer times.
Oh well they will make pretty rugged orange coasters in the end. ;-(
>
> --- In Avid-L2@yahoogroups.com, John Moore <bigfish@...> wrote:
>>
>> I'm taking a Avid QT ref SD 1:1 mxf file with 4 tracks of audio and
using QT Pro to export a self contained QT directly to a LaCie Rugged
Mini. The Mini is USB buss powered with a USB to internal connection cable
with two mini and micro usb connectors mounted together side by side. In
activity monitor it shows Data written/sec bouncing between 14.5 to 16.38
MB. I never really look at these activity monitor parameters so I don't
have a feel for what they should or could be. Could anyone tell me if I
would be better off creating the QT self contained movie to the internal
drive and then copying the file to the Rugged Mini or is the throughput of
the USB connected LaCie Rugged Mini not a factor in the time QT Pro takes
to export the file. In other words does exporting directly to the LaCie
mini slow down QT Pro's processing of the file because it's having to wait
for the LaCie to write the data before moving on to more processing.
>>
>> John Moore
>>
>> Barking Trout Productions
>>
>> Studio City, CA
>>
>> bigfish@...
>>
>> [Non-text portions of this message have been removed]
>>
>
>

--
---
Rob Lawson
System Administrator, ACSR ISIS, Windows & Interplay
CBS News

[Non-text portions of this message have been removed]

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