RAID technology is a great feature for Lotus Notes that protects information in the event of a hard drive failure. It incorporates multiple hard disk drives into one file system, and utilizes fail-tolerance to reconstruct information in the event that a single drive fails. It’s especially useful for businesses that have multiple hard drives and want to ensure that their info is always available.

A typical raid setup is made up of two or three hard disks. Each disk has its own data path. The transaction log is divided into smaller files, referred to as log extents. The log extents are typically 64MB in size. The Notes Machine supervises the transaction log.

Raid has been around for a long time and is a key component of most datacenter systems. However, it’s not foolproof. The entire file system can be rendered unusable if more than one drive fails.

Despite its flaws some organizations still rely on raid to safeguard their crucial data. The latest versions of RAID including erasure codification, are more efficient than ever at protecting data from failure and provide better performance. However, they cost more than traditional raid solutions.