It depends…
First, if you dont have anything critically important on your computer, and you are satisfied with its speed, you dont need raid. If your computer is fast enough but has critical data, and you do backups regularly No.
Here is where it gets tricky: Raid 0 is just striping, it will give you extra speed in the hard drive reads/writes, BUT you lose reliability – there is no redundancy which is fine as long as you have good backups, and backup religiously(as in once a day, every day)!
IF your data is any kind of important, you need to back it up if you want to run Raid 0!
How important is the computer and its information? How critically important is the data? How fast do you need it? If you have a business(or just family data) with critical data on it you may prefer raid 1(duplication of data-high cost, fast read but slower write performance), Raid 1 doubles your HD costs, but increases the computers’ reliability.
Raid 5 is the next cheapest/reliable array, you need at least 3 disks for a Raid 5 array, but 4, or 5 disks are more reliable, but costs much more than just a single drive.
Tags: raid 5 linux, raid linux, what is raid, what raid linux, why raid, why raid linux
