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Question

RAID two SSDs to reach 6gb/s speeds?

Nov 28, 2014 1:42PM PST

My macbook pro is equipped with 3.0Gb/s SATA bus for
the optical drive and the standard 5400 rpm HDD. If I was to replace both of
these drives with solid state drives capable of at least SATA 3Gb/s speeds
(roughly 300 mb/s data transfer), could I somehow run RAID software so the
computer knows to pull parts of identical data off of 2 SSD's (capable of at
least 300mb/s to max out the SATA 3GB/s bus) to achieve a theoretical 6gb/s
limit (via 2 lanes of sata 3.0 speed)? Would this be nearly as fast as newer SATA systems capable of 6GB/s bus speeds?

Discussion is locked

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Answer
The thing is.
Nov 29, 2014 12:01AM PST

While it may hit bus speeds that doesn't mean the overall data or payload transfer will increase by double. I've seen folk expend a lot to push up the bus speed and find out it didn't pay off as well as they hoped.

If you want to pursue this, call OWC (see google) and see if they have a kit for this.
Bob

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Answer
limits of bus
Dec 2, 2014 6:05PM PST

There is always a limit of bus speed. You can't beat it. If you have sata2 (3Gb/s) than if you are using one drive or 10 (if you would have that many connectors) you always will be limited to sata2 overall. Thats why new standards are inveted/improved. For example one drive can't hit the max of port on sata2 (if its slow), but when you make RAID0 of them they will reach the limits, but it newer be faster than sata3 (even you pair 10 of them).