Various people have suggested that our goal of 7 streams of DNX145 is possible with our old medianet 5. It has fibre connectivity. Not sure if it's 2Gig or 4 gig fibre. Is there a fibre limit of bandwidth on a medianet 5? Is it dependent on the Medianet5 chassis or is it a product of the fibre switches used or is it a combination of both elements. My understanding of the older unitys is their ethernet backplane was only 1gig that fed the ethernet switch also 1 gig. The newer Isis have a 10 gig backplane to the ethernet switch making their performance much better. Where does fibre channel fit into the older unity's is is also limited to 1 gig or could it be more. Looking at the math for ethernet clients I would think a 2 gig fibre client, if possible, could pull 6 streams. If 4 gig fibre is possible on an older medianet 5 would that handle 7 streams of dnx 145?
Even if the above was possible for one client my gut, there I go with the gut again, feels like hanging 4 online bays on the unity would bring it to a screeching halt. Is my gut making any sense. This combined with the possibility of the stage recording direct into the san that would be another 7 streams coming into the Unty or Isis. Is that too much to hope for. Perhaps my goal of recording direct into the unity/isis from the stage is asking too much. It seems like this should be doable but is it more cost effective to use shuttle drives from stage to san? This seems like it shouldn't be that big a deal but the more we research the more conflicting opinions and suggesting we get.
---In avid-l2@yahoogroups.com, <bogdan_grigorescu@...> wrote :
From: "bigfish@... [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com
Sent: Tuesday, June 21, 2016 5:23 PM
Subject: Re: [Avid-L2] Medianet 5 real time streams of DNX 145 vs. Isis 5K and 7K
---In avid-l2@yahoogroups.com, <jb30343@...> wrote :
through a switch so their individual connections are somewhat
independent. The bandwidth of the ISIS itself depends on the number of
chassis it has. The system administrator can let all the clients share
the available bandwidth more or less equally or they can assign a
dedicated bandwidth to individual clients. We frequently have 12 plus
systems working simultaneously with a mix of DNxHD145 and XDCam50 and
it's not a problem. Short bursts of 2 streams of DNxHD (un rendered
dissolves) are fine too. --J.B.
John Moore bigfish@... [Avid-L2] wrote:
>
>
> I'm going to start googling but on a talk show series coming up we are
> told that on a similar series they had 6 online bays pulling 7 streams
> of DNX 145 while offlining the talk show at using the DNX-145 as the
> source media. I don't have all the exact configuration but I'm told
> this was done with an Isis 7K model and perhaps an additional Isis
> 5K. I'm not really up on all the various configurations but given
> they did this on another series it seems possible. Is there a chart
> somewhere that lists the amount of streams capable on an Isis. As I
> understand Isis is always ethernet 1 gig to the client and 10 gig on
> the backplane.
>
> We are being asked why we can't just use one of our older medianet 5
> unitys that is 2 gig fibre. Some of the medianet 5 chassis are 500GB
> drives and a few are 1TB drives. To my mind I think the newer Isis
> configurations are using bigger drives which inherently have faster
> read and write speeds due to the higher density of the data on the
> platters. Also newer hardware must perform faster and more
> efficiently than the older medianet 5. I don't understand why this is
> so hard for the bean counters to understand. If anyone can point me
> to the definitive documents regarding capacity, throughput and number
> of streams I'd appreciate it. I know I've seen these types of
> documents and Avid was very big on documenting how they are very
> conservative with their promises so you don't end up disappointed.
> John Moore Barking Trout Productions Studio City, CA bigfish@...
>
>
>
Posted by: bigfish@pacbell.net
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