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On Wed, Dec 15, 2010 at 12:07 PM, Volker Armin Hemmann |
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<volkerarmin@××××××××××.com> wrote: |
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<SNIP> |
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>> |
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>> The logic and timing of the signals on SATA and eSATA cables is |
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>> (TTBOMK) intended to be identical. What those signals look like at |
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>> different places in the cable chain will be different. |
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>> |
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>> - Mark |
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> |
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> and you have sources to support that claims and did not just make it up. |
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> |
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> |
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Ouch! Man, you like to put people in their place, don't you! :-) |
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How about: |
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http://www.serialata.org/technology/why_sata.asp |
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http://www.serialata.org/technology/esata.asp |
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Wikipedia is an interesting place to go for information but the |
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organization that is responsible for the spec itself is better. |
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SATA is currently defined as supporting up to 6Gb/S (now Gen3) while |
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eSATA supports up to 1.5Gb/S (Gen1) or 3Gb/S (Gen2). Internal cables |
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have highly limited lengths. External cables can be much longer. (2 |
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meters) |
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TTBOMK no one on this list is using a single drive that would exceed |
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1.5Gb/S (roughly 187MB/S) so it's unlikely anyone would see a |
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difference in speed, but that doesn't mean the specs are the same. |
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The 'logic' of what's on the cable during data transferred is |
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identical. The _rate_ at which it's transferred on eSATA is slower and |
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the electrical levels are modified to provide more reliability across |
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longer cables and reflections at cable/connector boundaries. |
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I trust that you can read the Serial-ATA org web site yourself to get |
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properly educated on the matter. |
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Cheers, |
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Mark |
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