If your hard disk is equipped with a hot swappable hard disk carrier, and the RAID1 array has been prepared, you can directly hot swap and replace the hard disk if one is broken, and the array card will automatically rewrite the data of the broken hard disk to the new hard disk.
The same hard disk should be used. To improve the read/write speed, group raid0. This is a way to read and write files to two disks at the same time in blocks. It is twice as fast as reading and writing files to one disk alone. However, this is at the expense of the availability of the hard disk. If one disk fails, the entire file cannot be used.
Are you a PC or a server?RAID for hard disk is mainly for data security, and it doesn't pay much attention to read and write. What kind of RAID do you use?Personally, I don't think it's necessary.As for improving the speed, I don't think it's necessary. The 7200 speed is OK. I'd better use SSD instead
Yes, both raid0 and raid1 are generally supported. However, to add an array, you need to see the detailed operations. Some models need to take out the previous array to add an array, or they may lose the array
