Raid Technology for Lotus Notes
Lotus Notes’ RAID technology assists safeguard data from being destroyed in the event of a hard disk failure. It is a system that combines multiple hard disk drives into one file system and uses fail-tolerance in order to rebuild data if a single drive fails. This is a great option for companies that need to make sure that their data is always available.
A raid on the lotus notes iDataAgent Catalog retrieves a database’s transaction log, and associates it with a specific Notes Database. The transaction log is split into smaller data files, known as sign extents. Each one is 64MB. Each sign extent has an entry that identifies the date that the database was created and the date it was last executed by the Fixup activity.
There are several levels of raid, each offering various levels of performance and fault tolerance. RAID 1 is most common due to the fact that it uses mirroring in order to double the storage capacity. It’s not completely secure. If the mirrored disk fails it will take hours to restore data from the remaining drives. RAID 5 is a different option that combines striping with parity to offer good storage and performance. It requires two additional disks to achieve parity, but it provides the most optimal balance between storage and efficiency.