Our our final post on RAID all the things. In this post, as you can undoubtedly guess, is about RAID 10. Which is a combination of RAID levels 1 and 0…. or just mirroring and striping. What happens is there are a minimum of 4 drives. Drives 0 and 2 have data striped across them, while disks 1 and 3 are mirror copies of disks 0 and 2. Its really simple, performance and security.
If a mirrored pair were to fail, then the array would crash and all the data would be lost. Which would be catastrophic to a companies time and money. But, that is the worst possible outcome. Although it is less likely to actually happen , it can. So backups are a good idea. Also there is the cost of this array type, and 8 TB drives are not cheap. Since this RAID requires a minimum of four drives or more, the price can get real steep.
Assuming that a mirrored pair doesn’t fail, you wont have much to worry about. This RAID level has excellent performance and perfect for servers that perform a lot of write operations. So typically, this RAID is used in database servers. Not to mention the added protection of a mirrored drive should one fail.
When considering what array to go with what best serves your current needs. If you need speed and security, consider RAIDs 5, 6, or 10. Like all hardware and software, everything revolves around what you and your infrastructure needs.