FAQ 14 is the FAQ to read for disk drive setup, configuration, and management. Have you read it, yet?
If all you want to do is add sd1, sd2, and sd3 to your system as standard disk drives, start with FAQ 14.3, which describes using fdisk(8), disklabel(8), mount(8), and fstab(5). Other parts of the FAQ will also be helpful, such as 14.1 and 14.2.
You asked, above, about using drives in a software RAID array, so you should also read FAQ 14.13. Carefully. This FAQ will discuss two software RAID technologies: RAIDframe, which I mentioned above, and ccd(8), which I did not.
The FAQ will tell you that ccd is easier to configure than RAIDframe, but that it has recoverability limitations.
Please, read the FAQ. Then, once you have read it, if you have a specific question, feel free to ask it.
|