Tom's Hardware > Forum > Storage > General Storage > [Solved] E-Sata Daisy Chain?
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wildwell   10-15-2009 at 08:53:29 PM

I don't think e-Sata can be daisy chained? Can anyone confirm this for me?
Will it make a difference (as far as daisy chaining is concerned) if I'm using 3Gbps e-Sata II instead of 1.5Gbps e-Sata?
Thanks in advance.

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Best answer from Mekugi Ana
SATA and by consequence eSATA is specifically designed to work in a one drive one cable model. Technically eSATA was an afterthought brought into existence because USB and Firewire couldn't provide the same data bandwidth as SATA. There are recent developments that allow the use of SATA port multipliers, but the motherboard or SATA card has to support it and I don't know if that also applies to eSATA ports or how you would power a multiplier like that.
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Mekugi Ana   10-15-2009 at 09:43:59 PM
Best answer

SATA and by consequence eSATA is specifically designed to work in a one drive one cable model. Technically eSATA was an afterthought brought into existence because USB and Firewire couldn't provide the same data bandwidth as SATA. There are recent developments that allow the use of SATA port multipliers, but the motherboard or SATA card has to support it and I don't know if that also applies to eSATA ports or how you would power a multiplier like that.

------------------------------ -Mekugi Ana
:: Only Science is more interesting to me than Tech ::
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wildwell   10-15-2009 at 10:00:15 PM

SATA port multipliers? Is this similar to a SATA hub, internal or external?

If you're talking about a close proximity external hub ("multiplier" ), would a machine (specifically an Apple Xserve unit) with a second 750w power supply be a possible solution to power it?

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Mekugi Ana   10-15-2009 at 10:14:42 PM

Sort of like a hub, not really clear on the tech. I've only ever seen internal port multipliers, don't know about externals

------------------------------ -Mekugi Ana
:: Only Science is more interesting to me than Tech ::
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Mekugi Ana   10-15-2009 at 10:23:15 PM

Found this: [url=http://www.sataport.com/][/url]

So I guess they do exist. Though I say again your motherboard or eSATA card needs to be port multiplier compatible

------------------------------ -Mekugi Ana
:: Only Science is more interesting to me than Tech ::
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Mekugi Ana   10-15-2009 at 10:28:49 PM

http://blog.irisink.com/2007/05/05/esata-port-multipliers-for-mac-os-x/

This is a Mac specific article on the subject

------------------------------ -Mekugi Ana
:: Only Science is more interesting to me than Tech ::
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