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Whats difference between normal hard drives and AV drives? |
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#1 |
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Forum Member
Join Date: Aug 2004
Location: Northamptonshire
Posts: 108
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Whats difference between normal hard drives and AV drives?
Some time ago I thought my drive had packed in so I threw in a spare sata drive which was lying around. (Foxsat)
When it all seemed to work again I gave it no more thought until I started getting record errors quite recently. I could actually hear the sound like when the heads disengage , like an occasional clicking sound while recording. You know what I mean. and the resulting recordings appeared to be stalling and pixelating briefly before carrying on.Going back to my initial reason for swopping the drive - It turned out that it was nothing to do with a drive failure at all but something else and when I checked out the drive in my pc it was absolutely fine so I just left the old Foxsat drive in my pc and kept on using the spare "thrown in drive" until now. Anyway, I now realise that I have to use an AV drive and have re-installed the original Foxsat drive without any further problems and the non AV drive seems to be quite happy back where it should be! I could have just asked what the difference between the two types of drive are but I wanted to bore you all to death.:yawn: ![]() This is the most embarrassing bit. I`m actually a retired computer engineer (for obvious reasons) so you can use words of more than one syllable if you can offer a fairly detailed explanation.
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#2 |
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Forum Member
Join Date: May 2005
Location: Redditch Worcs
Posts: 17,288
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1 Low power consumption
2 Mimimal error checking, the odd single bit error in a AV application is irrelevant compared to the capability to stream continously to the hdd. Example DV camcorders require firewire not usb, simply because they can sustain a continous data stream essential for a tape based media.. See http://blog.mvidatarecovery.com/what...nics-ce-drive/ |
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#3 |
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Forum Member
Join Date: Aug 2004
Location: Northamptonshire
Posts: 108
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Many thanks yet again Graham.
The link you supplied describes the reasons perfectly. I`m a bit worried about this part:- Quote. "Installing a regular PC hard disk can cause the life of the PVR power supply to be dramatically reduced". but I`m sure that all will be ok as it wasn`t in there very long. ![]() Cheers. |
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#4 |
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Join Date: Jun 2010
Location: Perchede, France
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Quote:
Many thanks yet again Graham.
The link you supplied describes the reasons perfectly. I`m a bit worried about this part:- Quote. "Installing a regular PC hard disk can cause the life of the PVR power supply to be dramatically reduced". but I`m sure that all will be ok as it wasn`t in there very long. ![]() Cheers. |
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#5 |
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Join Date: Jan 2009
Location: Bangor
Posts: 333
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So how big a risk am I taking installing CE drives in my PC?
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#6 |
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Join Date: Jul 2002
Posts: 1,396
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Quote:
So how big a risk am I taking installing CE drives in my PC?
i.e. it would fail "fast" and let the host decide whether the operation was worth retrying, preventing the drive potentially blocking other read/write operations whilst retrying. Need to check the specs to be sure, but I don't think they would get SATA certified if they just silently ignored errors, and even in a PVR even a single bit error could corrupt the filesystem if it was in the middle of filesystem metadata as opposed to a recording. |
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#7 |
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Join Date: Jun 2010
Location: Perchede, France
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Quote:
So how big a risk am I taking installing CE drives in my PC?
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#8 |
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Join Date: Jan 2009
Location: Bangor
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Quote:
but why would you want to - usually there are at a price premium due to volume?
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#9 |
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Join Date: Jun 2010
Location: Perchede, France
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Quote:
Because I'm a cheapskate and scavenge hard drives from old and broken Sky boxes and put them in PCs when the hard drives fail.
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and the resulting recordings appeared to be stalling and pixelating briefly before carrying on.
so you can use words of more than one syllable if you can offer a fairly detailed explanation.

