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Fastest way to connect an external drive?

Aressem

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Joined
Mar 29, 2012
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31
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Richmond, BC
Just like the title says... I'm wondering what the fastest connection is for any external HDD/Raid enclosure? Not so much theoretical, but real world. I'm currently using eSATA and wondering how that scales up...

Thanks.
 

LarkStarr

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Oct 4, 2007
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1,626
Doesn't much matter, the top speeds of lone mechanical hard drives don't scratch the surface of the available bandwidth with recent connectivity. Even USB 2.0 is slowed by the drive in a sustained transfer.

However eSata is a solid choice, it was designed for hard drives specifically. You're going to get great latency and a top speed that again, doesn't matter.
 

KaptCrunch

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Feb 23, 2008
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Ontario
a Esata dock
note fastest transfer is Linux
 

Nodscene

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Dec 7, 2007
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Toronto
Sorry but that's completely false (unless I misunderstood what you were saying). Sustained transfers (7200rpm drive) on a USB 2 connection will get you about 20-30mb/s while USB 3 will net you 80-100bm/s on the same drive. Theoretically esata should be a bit faster but the drive will probably be the limiting factor.

Doesn't much matter, the top speeds of lone mechanical hard drives don't scratch the surface of the available bandwidth with recent connectivity. Even USB 2.0 is slowed by the drive in a sustained transfer.

However eSata is a solid choice, it was designed for hard drives specifically. You're going to get great latency and a top speed that again, doesn't matter.
 

LarkStarr

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Joined
Oct 4, 2007
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1,626
Sorry but that's completely false (unless I misunderstood what you were saying). Sustained transfers (7200rpm drive) on a USB 2 connection will get you about 20-30mb/s while USB 3 will net you 80-100bm/s on the same drive. Theoretically esata should be a bit faster but the drive will probably be the limiting factor.


You're right, my mistake. I should rephrase 'can' be slowed by the drive. You're entirely right that faster drives can saturate the full 480 Mb / 60 MB theoretical interface pretty easily, but not all of them can. I imagine denser 5400 RPM drives can probably max out the saturation on the faster part of the platter.

I think the top speed of the best mechanicals is about.. 150 MB/sec?

Regardless the point was that pretty much anything more recent then USB 2.0, there's not going to be much of a problem/difference on paper.
 

Aressem

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Joined
Mar 29, 2012
Messages
31
Location
Richmond, BC
Here's a question. I have a 6TB WD MyBook Studio II setup in raid 1. I use it to store my archive of photos (I'm a photographer). Sometimes accessing the drive takes forever. As if it falls asleep due to inactivity. I think they are 2x 3TB WD green series drives. Is this normal? I want to fin a way to keep the drives awake at all times so that I never have to wait.
 
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