Lotus Notes’ RAID technology is used to safeguard data from being destroyed in the event of a disk failure. It is a system that combines multiple hard disk drives into one file system, and makes use of fail-tolerance to rebuild information if a single drive fails. This is a great option for companies who want to ensure that their information is always available.
A search for Lotus Notes in the iDataAgent catalog locates the transaction log of a database and connects it to the specific Notes database. The transaction log is split into smaller data files known as sign extents. Each one is 64MB. Each sign extent contains the date that shows the date of creation of the database and also the date it was executed by the Fixup activity.
There are various levels of raid. Each offers different level of performance and the ability to tolerate faults. RAID 1 is most common because it uses mirroring in order to double the storage capacity. It’s not completely secure. If the failed disk is mirrored it will take hours to restore data from the remaining drives. RAID 5 is an amalgamation of striping and parity that provides good storage and performance. It requires two additional disks to achieve parity, but provides the most optimal balance between storage and efficiency.