USB 3.0 makes USB RAID Possible, Tempting
USB 3.0 makes USB RAID Possible, Tempting
Posted 08/28/2009 at 11:25am
| by Andy Salisbury
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According to some recent news, one of the first companies creating silicon for USB 3.0 is claiming that one of their USB 3.0 systems on a chip can be used in concert with external storage devices to provide transfer rates of up to 500Mbit/second.
USB 3.0 has been designed to handle transfer speeds of to 5Gbit/second, a sizeable increase when compared to the 480Mbit/second that USB 2.0 offers. “You’re pretty much communicating through a straw,” stated Gideon Intrater, vice president of solutions architecture with Symwave. “USB 2 was good as long as you had 100GB on your hard drive, but now it’s just way too slow.”
The new system on a chip, which was developed with external storage in mind, can supposedly offer performance faster than SATA. According to reports, said chip will allow speeds as high as 500Mbit/second thanks to its RAID 0 support. System builders will be able to take advantage of this feature by installing two external drives that can be addressed at the same time, offering faster data reads.
Still, we’re going to have to wait for USB 3.0 to make its debut.
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colinjm0517
August 28, 2009 at 1:30pm
You mean 500 MB/s right? 500Mbit/s is just barely faster than USB 2.0
Windows 7 is the King of all OSes
mrguitarmann
November 13, 2010 at 10:12am
I have a 3 Western Digital USB drives (1TB each) set up in RAID 5 mode in Linux. It took me no time to set up at all and speeds are way over what I can pull out from a SATA II drive in any OS. Furthermore Linux doesn't mind which port the drive is plugged into so will always correctly RAID if I have to move the machine for any reason.
Taz0
August 28, 2009 at 10:53pm
Yeah, that's probably what he meant. Since USB3's speed is 4.8Gbps (x10 faster than USB2's 480 Mbps), and since 4.8Gbps / 8 = 600 MB/s. If you take away 100 MB/s for overhead (USB usually has a nasty overhead), you're left with about 500 MB/s.
nekollx
August 28, 2009 at 1:00pm
think about it this way.
If you RAIDed a u2 its would have AT BEST 480MB read times, across all drives,
U3 is 5GB cap and the current controler for the hard drive would be 500MB per drives (with a max head of 5GB)
so instead of 3 drives sharing 480MB you have 3 drives EACH using 500MB and SHARING 5GB cap
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baker269
August 28, 2009 at 1:51pm
"think about it this way.
If you RAIDed a u2 its would have AT BEST 480MB read times, across all drives,
U3 is 5GB cap and the current controler for the hard drive would be 500MB per drives (with a max head of 5GB)
so instead of 3 drives sharing 480MB you have 3 drives EACH using 500MB and SHARING 5GB cap"
Everything you typed is incorrect. Back to school with ya.
nekollx
August 28, 2009 at 3:23pm
last i checked thats howRAID worked.
if you have 3 SSDs with 250MBS read raided their each one is reading 1/3 of the file at 250 MBS with the only cap being what SATA, ESATA, USB, SCSI etc has for the pipe line.
------------------------------
Coming soon to Lulu.com --Tokusatsu Heroes--
Five teenagers, one alien ghost, a robot, and the fate of the world.
jcollins
August 28, 2009 at 3:50pm
That's how it works when the RAID is on your main system, not necessarily when it's on a cable to a RAID box...
nekollx
August 28, 2009 at 3:57pm
But that's the idea behind this going RAID.
Concept and iplmentation are 2 different things but you can't just make a blanket "that's not how it works" when the article talks about "this is what we are hoping will work"
------------------------------
Coming soon to Lulu.com --Tokusatsu Heroes--
Five teenagers, one alien ghost, a robot, and the fate of the world.
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