Saturday, February 14, 2015

[Avid-L2] Re: current best sata drives

 

Hitachi IMHO but I have not been burning through drives of late. Either because Hitachi is so good or I am slowing down...

DD

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Re: [Avid-L2] current best sata drives

 

Terry,

     For some years now IT professionals have been warning about the folly of rebuilding small RAID arrays built with multi-terabyte SATA drives as this is very likely to corrupt the array & lose all its data with no recourse.   Current best practice is to never try to rebuild, but to simply copy the data off to another backup array, then to replace the failed drive, format the array and start from scratch.  Lots of articles online about this problem, e.g.:


     Wilson



On Sat, Feb 14, 2015 at 10:29 AM, tcurren@aol.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 

What makes the larger drives scary is that a failed drive now takes so long to rebuild it increases the chances of the dreaded second drive failure. This is also increased when all the drives are manufactured at the same time increasing the chances of a design flaw occuriing at the same time. 


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Posted by: Wilson Chao <wilsonchao@gmail.com>
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Re: [Avid-L2] current best sata drives

 

What makes the larger drives scary is that a failed drive now takes so long to rebuild it increases the chances of the dreaded second drive failure. This is also increased when all the drives are manufactured at the same time increasing the chances of a design flaw occuriing at the same time. 

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Re: [Avid-L2] current best sata drives

 

First SSD I ever bought was from OWC (Electra). It died within a week of installing.

Samsung 840 Pro for SSDs. I've bought and installed so many and none have failed in two years.

HGST for spinning disks. Failure rate low enough that there's no other comparable.



On Fri, Feb 13, 2015 at 9:39 PM, Dennis Degan DennyD1@verizon.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 


On Feb 13, 2015, at 8:42 PM, John wrote:

> OWC doesn't manufacture drives.  Have you ever opened one of their enclosures to see what they use?

I say:

They do test them themselves.  But I suppose others test theirs as well.

Dennis Degan, Video Editor-Consultant-Knowledge Bank
    NBC Today Show, New York



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Posted by: Mark Spano <cutandcover@gmail.com>
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Friday, February 13, 2015

Re: [Avid-L2] current best sata drives

 


On Feb 13, 2015, at 8:42 PM, John wrote:

> OWC doesn't manufacture drives.  Have you ever opened one of their enclosures to see what they use?

I say:

They do test them themselves.  But I suppose others test theirs as well.

Dennis Degan, Video Editor-Consultant-Knowledge Bank
    NBC Today Show, New York


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Posted by: Dennis Degan <dennyd1@verizon.net>
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Re: [Avid-L2] current best sata drives

 

OWC doesn't manufacture drives.  Have you ever opened one of their enclosures to see what they use?

On Friday, February 13, 2015, Terry Barnum terry@dop.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

+1 OWC
We use their On-The-Go portables for field media backups. Out of probably 100 over the last couple years we've had one go bad. They replaced it quickly.

-Terry

On Feb 13, 2015, at 12:07 PM, Chris Miloslavich chris@milomix.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

> I've had great luck with Other World Computing supplied drives.  I have 12 drives total in 3 separate raid arrays and have had zero downtime due to them.
>
>
> -Chris

Terry Barnum
digital OutPost
http://www.dop.com



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Re: [Avid-L2] current best sata drives

+1 OWC
We use their On-The-Go portables for field media backups. Out of probably 100 over the last couple years we've had one go bad. They replaced it quickly.

-Terry

On Feb 13, 2015, at 12:07 PM, Chris Miloslavich chris@milomix.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

> I've had great luck with Other World Computing supplied drives. I have 12 drives total in 3 separate raid arrays and have had zero downtime due to them.
>
>
> -Chris

Terry Barnum
digital OutPost
http://www.dop.com



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[Avid-L2] Re: Safe color limiters not clipping RGB black levels

 

Very interesting thread Mr. Spano.  Given you can't use the safe color limit with 422 checked without render it kinda creates a major issue.  I occasionally see speculars get through.  I safe color limit all my shows given the files need some protection and then feed through an external legalizer, unfortunately I don't have the Harris unit, but Steve's place does.  If the harris is properly set there should be no complaints on the tape.  The file which doesn't get the harris benifit is another story.

If I run a show with the Tek 7020 with it set to Tek Default which mimic EBU standards, so I'm told by Tektronix.  and don't see any alarms I feel there should be no QC level issues.  Of course I have to set the scope to 1% area to avoid the nature of an HDCam and SR deck's adding small specular distortions to it's output because of what I'm told are some enhancement circuitry that causes the specular over shoots.  I will ama link to output files and play them back through my scope and those usually behave on the alarm side.  I haven't noticed a pattern of error on the files so far.  I'd say ask the international QC folks how they like to set the Harris limiter and see if they still want to reject the tape.  I'd be curious to know if the file is failing or the tape or both and are they noting errors in the same time codes.

I'd bet that this is an overzealous QC because other than the ABC spike gate issues I haven't seen anything the Harris units can't handle.  The networks like ABC have suggested setting for the DL-860 etc...  Sometimes it helps to find out what the QC folks are using to measure the media.  There have been cases where problems are being picked up based on an analogue downconvert outputs which really aren't valid given the HD tape is in spec.  If the signals are invalid for down convert then those can be legalized in the downconverted signal.  I try to keep things valid for downconverts but I'm sure there are things that slip by.  It is always curious to me how a show that has totally passed domestic QC and aired gets flagged on an International QC.  The harding machine is the only thing that I consider a valid QC issue as it's part of the broadcast spec for some countries but even that box is suspect in it's error recording.  Overall level issues just seem to be something that should have already been flagged at the domestic level.  Just my opinion.



---In avid-l2@yahoogroups.com, <sppomerantz@...> wrote :

I'm kind of out of the online world these days, but I'm posting this for the online editors at the company I'm with.


We're having a problem with outputs from our Avid Symphony v7.0.3. (HP z820).  The international dept. of a network is kicking back our masters due to RGB chroma legality and oversaturation. We are outputting to HDCamSR at DNxHD 220x through our Harris DL860 legalizer. We are also exporting a file based same as source Quicktime with the Avid safe color limiter rendered and applied to the entire episode, and the result is always the same. Clips throughout have RGB levels slightly below the 0 mv limit but anything above 700 mv are clipped.  We have had the Harris unit calibrated, but the problem persists.  

Anyone have any insight as to why this might be happening?


thanks,


Steve Pomerantz

Jupiter Entertainmnet

Steve Pomerantz - Online & Offline Editor


 

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Re: [Avid-L2] Safe color limiters not clipping RGB black levels

 

you might need to dial down the video gain on your legalizer(say 1-1.5%) in the offending sections.
That is if you have the procamp option.

BG





From: "sppomerantz@yahoo.com [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com
Sent: Friday, February 13, 2015 1:59 PM
Subject: [Avid-L2] Safe color limiters not clipping RGB black levels

 
I'm kind of out of the online world these days, but I'm posting this for the online editors at the company I'm with.

We're having a problem with outputs from our Avid Symphony v7.0.3. (HP z820).  The international dept. of a network is kicking back our masters due to RGB chroma legality and oversaturation. We are outputting to HDCamSR at DNxHD 220x through our Harris DL860 legalizer. We are also exporting a file based same as source Quicktime with the Avid safe color limiter rendered and applied to the entire episode, and the result is always the same. Clips throughout have RGB levels slightly below the 0 mv limit but anything above 700 mv are clipped.  We have had the Harris unit calibrated, but the problem persists.  
Anyone have any insight as to why this might be happening?

thanks,

Steve Pomerantz
Jupiter Entertainmnet

 


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Posted by: Bogdan Grigorescu <bogdan_grigorescu@yahoo.com>
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RE: [Avid-L2] Safe color limiters not clipping RGB black levels

 

Hi Steve,

Do you have the RGB levels in the safe color limiter set 16-235?

Warmly on a cold day,
Seth



To: Avid-L2@yahoogroups.com
From: Avid-L2@yahoogroups.com
Date: Fri, 13 Feb 2015 17:19:45 -0500
Subject: Re: [Avid-L2] Safe color limiters not clipping RGB black levels

 

could be related to something I reported a while back:

http://community.avid.com/forums/p/116677/674618.aspx


On Fri, Feb 13, 2015 at 4:59 PM, sppomerantz@yahoo.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 

I'm kind of out of the online world these days, but I'm posting this for the online editors at the company I'm with.


We're having a problem with outputs from our Avid Symphony v7.0.3. (HP z820).  The international dept. of a network is kicking back our masters due to RGB chroma legality and oversaturation. We are outputting to HDCamSR at DNxHD 220x through our Harris DL860 legalizer. We are also exporting a file based same as source Quicktime with the Avid safe color limiter rendered and applied to the entire episode, and the result is always the same. Clips throughout have RGB levels slightly below the 0 mv limit but anything above 700 mv are clipped.  We have had the Harris unit calibrated, but the problem persists.  
Anyone have any insight as to why this might be happening?


thanks,


Steve Pomerantz
Jupiter Entertainmnet
Steve Pomerantz - Online & Offline Editor
Steve Pomerantz - Online & Offline Editor
A demo site for video editor Steve Pomerantz of Los Angeles, Ca
Preview by Yahoo


 



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Re: [Avid-L2] NTSC DVD Recorders - Free to a good home Panasonic DMR-E55

 

Hi, I'll take one if you still have them. I still use them on occasion and the one I have broke.
Thanks,
Mike Murphy
323-369-0679

--------------------------------------------
On Fri, 2/13/15, Greg@SecretHQ.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

Subject: [Avid-L2] NTSC DVD Recorders - Free to a good home Panasonic DMR-E55
To: Avid-L2@yahoogroups.com
Date: Friday, February 13, 2015, 2:12 PM


 









I might even have the remotes if you ask nicely.



These used to be in edit bays for review and approval DVDs,
then the

studios disallowed that, and they moved into a machine room
for

duplication of same… now all R&A is through MP4 or
quicktime, so I'm

tired of storing these. I still have a couple in the
machine room

(which itself is outdated now!) but don't need all
these. I was going

to electronic-recycle these, but thought someone may still
have use for

them.



Record composite or S-video NTSC onto 4.5 gig DVD -R they
might do +R,

too, but we never tried that. They have optical and RGB
(yuv?) but not

in.



gh



-------------------------------------

Greg Huson

Chief

323-677-2092

Greg (at) SecretHQ.com

www.SecretHQ.com

DigitalServiceStation.com













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