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ISIS 5000 Bandwidth
Does anyone have experience with going well over the recommend bandwidth of your ISIS 5000? We have two engines which we they thought would be plenty in the beginning at a total of 600MB/s. We’re running 10:1 or 8:1 throughout the building and no high-res footage is ever streamed from more than one online bay. Despite that we were floating closer to 800MB/s earlier today and capped out at 956MB/s according to the web UIs performance meter.
What sort of issues have you run into with this? I can understand if the playback performance starts to suffer but I’m wondering if any more serious issues have come up in your experiences.
I appreciate any info you might have. Thanks!
Jeff
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1 Reply
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Hi –
each client connected to an AVID ISIS with a single 1GbE Ethernet cable will get about 100MB/sec. IF you use two Ethernet cables, you get about 150 MB/sec per client. This is NOT link aggregation. AVID has their own little trick to making this happen (and I do not know that trick, but I do know that it is not LACP).The entire single chassis (engine) is 350 MB/sec. Your configuration is 3 RAID 5 groups, each with a hot spare, and then drive 16 is an additional hot spare. You gang engines together to get more bandwidth. When I first found out about this, I was surprised how slow this was compared to anyone else’s 16 bay chassis, but this is the configuration that AVID has decided on, making security of your media more important than speed and performance.
If you exceed the bandwidth of anyones drive array (I don’t care if it’s an AVID, a single FW drive, or one of the fancy 16 bays you see here on Creative Cow), you will get stuttering of playback, and “drop frame” errors (audio or video underrun errors).
AVID ISIS 5000 is designed for DNxHD145 (20MB/sec) or DNxHD220 (30MB/sec). It can support a single 10Gb Ethernet card in each AVID ISIS 5000 Chassis as a direct connect from chassis to client computer, using Myricom 10GbE cards. The current connection to your Dell Force10 S25 switch is a Myricom 10GbE card that fans out to 24 or 40 clients (depending on the size of the switch). If you want direct connect 10G, this is another Myricom 10GbE card that goes into the ISIS 5000 engine, that connects with a fibre cable to the client computer, that also has a Myricom card in it.
Bob Zelin
Bob Zelin
Rescue 1, Inc.
maxavid@cfl.rr.com
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