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[email protected] writes: |
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>Hi, |
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>I'd like to know if there is any system (CPU + HD array + framebuffer) |
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>which can play and record HDTV quality moving picture in realtime. |
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>HDTV has about 6MB/frame, so recording/playing moving picture will need |
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>about 180MB/sec bandwidth. I'm thinking to treat the raw data.. not |
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>compressed. |
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Finding a disk array that can do 180MB/sec. will be difficult. The fastest |
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ones I know about are from Maximum Strategy (IBM also sells these). They |
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can attach HiPPI at up to 144 MB/sec. (64 bit). For these kinds of data |
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rates you need more than SCSI for connections. Their latest model, the |
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RAID 5 model Gen 4 only does 90 MB/sec. but I think this may be a |
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limitation only of the HiPPI channel and that customer needs have not |
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exceeded that speed since their older model was faster. They are also not |
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idle (must be working on newer products that might be faster) and are a |
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small company so you might be able to ask about custom interfaces. They |
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still marketed the older, faster model as of a few mongths ago. |
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Maximum Strategy, Inc. |
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801 Buckeye Court |
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Milpitas, CA 95035-7408 |
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[email protected] |
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You might still want to look into compression as it will be very difficult |
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to keep the HiPPI bus fully working at all times - sustained throughput |
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might come close to maximum burst rate. |
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Interesting problem. Tell us more if you can? |
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>If anyone can advise me what kind of product I should look into, please |
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>e-mail me. I will appriciate it. The vendor's e-mail address, price of |
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>the products, actual performance data of the products, any info will |
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>help me. |
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>Thanks in advance, |
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>Kaz Sato, Tokyo, Japan |
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>e-mail: [email protected] |
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Dick Wilmot |
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Editor, Independent RAID Report |
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