Questions about raid 0

Andrewst1021 · Mar 10, 2015

So the bandwidth on sata 3 is 6 gigabits/s which equates to about 750 mb/s. When you are using raid 0, is the information being sent along only 1 of the sata cables or all that apply? Because spending an arm and a leg on another ssd better be worth it, and a 50% increase in speed isn't worth it.

Wayfur · Mar 10, 2015

It will write to both drives at the same time, which will be via the sata cable of each drive. They got more than 750 out of it in this article: http://www.pcworld.com/article/2365767/feed-your-greed-for-speed-by-installing-ssds-in-raid-0.html

but it's variable per drive.

You can read more about the experience there.

boosted1g · Mar 10, 2015

Unless your setup can utilize the 12gbps of bandwidth then RAID 0 of SSD drives will not give you much of a noticeable performance increase.
You just get the cons of RAID 0.

Brunostako · Mar 10, 2015

On RAID 0, the data is sent in parallel to the disks in the array. If you have 2 disk, then 50% and 50% are sent to the disks at the same time.

On SSD RAID 0, random reads and writes doesn't increase too much, but sequential ones do.

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