VTR Xchange Drop Frames

[Alex Varas]

Hi Walter,

I just did a test with the AJA test program in a windows system, it has connected another Infortrend, 24 raid5 disks and the bandwith I get are 350MB/sec writing and 380MB/sec reading.

I hope this is enough, or not? 🙂

Regards,

Alex

[Walter Biscardi]

[Alex Varas] “I just did a test with the AJA test program in a windows system, it has connected another Infortrend, 24 raid5 disks and the bandwith I get are 350MB/sec writing and 380MB/sec reading.

I hope this is enough, or not? 🙂 “

It’s a Windows test so I’m not really sure what that tells us. You’re running 24 discs and getting that slow of speed?

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
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[Alex Varas]

Hi Walter,

The program is:

AJA XENA System Test Version 1

From AJA, with this program you can make bandwidth tests against your disks with different resolutions and different sizes of info.
Being from AJA I trust on what they say.

I just asked infortrend how much will I get using the ATTO 42ES with their box…

Regards,

Alex

[Gary Adcock]

[Alex Varas] “The first tests I was making were on the system disk (200MB/sec) and SAN drive (not full speed channel) also another 218 MB/sec, both reading writing as average.”

I have NEVER EVER seen a 200 MBps on a single bootable drive in my life. The theoretical MAX speed limit on a single SATA drive is a little over 100MBps, That is a server class drive that would not work in your mac. Either you are guessing or your math is incorrect.

“So thats why I want to implement the infortrend box, with null result due LSI HBA… “

LSI only ever created the Apple Branded FC cards- why are you trying to hack together an old LSI FC card in your Mac?

“The thing I want is to use the two channels and split the disks, some for the system actually working (just keeping info) and some for the thing I wanna.
So… do you think with this mentioned config will I get the bandwidth to get even 2K??
“

Not with a split array. not DPX. You will not get realtime playback at 23.98 for more than 15-30 sec until the cache throughput maxs out.

You are attempting to muddle thru a very complex and hardware intensive editing process without trying to get the proper support for a hardware config like this- you cannot slop your way thru one of the most complex hardware configurations needed for highend editing. There is a vast amount of info needed to accomplish this task – raid config, raid cache settings, block size, raid levels, hell even the config of the Atto card is important to maximize the bandwidth.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Inside look at the IoHD

[Alex Varas]

Hi Gary,

I have NEVER EVER seen a 200 MBps on a single bootable drive in my life. The theoretical MAX speed limit on a single SATA drive is a little over 100MBps, That is a server class drive that would not work in your mac. Either you are guessing or your math is incorrect.

Forgot to mention the boot drive is stripe… I have to remake the SO, I dont like this kind of config…

LSI only ever created the Apple Branded FC cards- why are you trying to hack together an old LSI FC card in your Mac?

I apologize 🙂 I found it this way when I came working here 4 months ago, so dunno who/why bought it…

Not with a split array. not DPX. You will not get realtime playback at 23.98 for more than 15-30 sec until the cache throughput maxs out.

I get it, dont split, it has sense…

You are attempting to muddle thru a very complex and hardware intensive editing process without trying to get the proper support for a hardware config like this- you cannot slop your way thru one of the most complex hardware configurations needed for highend editing. There is a vast amount of info needed to accomplish this task – raid config, raid cache settings, block size, raid levels, hell even the config of the Atto card is important to maximize the bandwidth.

I never though it was going to be easy, and thats why I started to write in this forum 🙂 coz you all have more experience than me, more knowledge with raids, bandwidths, etc…

And I believe that its possible to get what I want with the minimum costs, this means buying only the ATTO and using what I have.

So do you think this config will work whatever the amount of info needed?

Thanks a lot,

Alex

[Walter Biscardi]

[Alex Varas] “Being from AJA I trust on what they say. “

So do I, for a Windows based system. You need to run the same test using the AJA System Test on the MAC system to know for sure.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
Read my Blog!

[Walter Biscardi]

[Alex Varas] “And I believe that its possible to get what I want with the minimum costs, this means buying only the ATTO and using what I have. “

If you believe that, then go ahead and purchase what you think will work. You’ve asked for our advice. None of us has ever run or testing the configuration you’re attempting to build, so none of us can speak from experience on whether what you say will work.

The advice you’re getting from myself, Gary and Bob is that you want a reputable, pre-configured array to work in high end HD and 2K editing. You do what you will with that advice.

Personally I would start with a brand new, pre-configured Array and HBA to do this work.

Also, I absolutely don’t understand how you can have a striped set up for the Mac HD. I would completely start over with the system first, then the array if you want reliable performance.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
Read my Blog!

[Gary Adcock]

[Alex Varas] “AJA XENA System Test Version 1 “

Alex- the default setup on this app is for SD

set the Video Frame size to be 2048 x1566 , file size to 2.0 GB and then let us know how fast it is then.

remember that Windows has a 2GB file limit that is not the same as on the mac- if it is a windows formated array your mac will never be able to get the full bandwidth out of it. it will need to be reformatted to get optimum speed out of it.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Inside look at the IoHD

[Alex Varas]

Have a good weekend!!

I will come with more new test on Monday… and Walter, I know its an advice, and also I would like to take everything brand new and not to build a something with spare parts and its a blame this stripe but it would be fun to see you in my position with the great budget I have.

But its ok, if this config wont work, at least I have the ATTO FC and the MacPro, both usable if I need to get a new array.

Cheers!!

Alex

[Walter Biscardi]

[Alex Varas] “but it would be fun to see you in my position with the great budget I have. “

No offense, but you’re trying to set up to do Uncompressed HD and 2K editing. Even $6,000 – $8,000 for a new array and HBA adapter to support this should not be an issue. If it was me, I would purchase the proper array.

This is what I’ve done since I opened my business. I’ve used credit cards, loans, lines of credit, whatever I have needed to get the right gear in the shop for the job at hand.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
Read my Blog!