>What Is raid compatibility ? and does SQL SERVER is raid compatible?
>
>Thanks
>Mahmmed
I want to add that there are several different varieties of RAID - RAID 1, RAID 2, RAID 5, and others; RAID 5 - or some variation thereof - seems to be quite common for servers, since it gives an excellent combination of safety and performance.
In RAID 5, 3 identical disks (or more) are combined to seem as a single disk. With 3 disks, basically, the equivalent of 2 disks is used for data, the third disk is for redundancy. (The details are a little more complicated.) The result is that if any one of the three disks fails, the server can continue working with the other two disks. The third disk can be replaced, and the data can be "reconstructed" from the data of the other two disks.
Also, since data is transferred from two disks at the same time, data is transferred faster.
It is also possible to have (for example) 6 disks, 5 for data and 1 for redundancy. I think this combination will be much faster.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
