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How do I verify that my 6 GB/s SATA ports are working under Linux?

Linux detects the ports, and I can use them for disks but I would like to figure out if they are using a 6 GB/s controller/driver instead of the slower, more common speed.

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Do you have any SSD capable of saturating 3Gb/s SATA? The only one so far is Crucial RealSSD C300. – Mircea Chirea Dec 14 '10 at 5:03
Yes. We have two of the Curcial RealSSD C300. – RyanTM Dec 15 '10 at 17:46
up vote 3 down vote accepted


grep -i sata /var/log/messages | less

The resulting output should contain a number of lines that look like "ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)" This would be a good place to start!

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Cool! I see SATA link up 6.0 Gbps (SStatus 113 SControl 300) – RyanTM Dec 14 '10 at 0:33
Then you, sir, are probably doing just fine! Good luck with it! – 英律功 Dec 14 '10 at 0:55

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