Lotus Notes’ RAID technology can help protect data from destruction in the event of a disk failure. It blends multiple drives on hard disks into one file system. It also makes use of failure tolerance to rebuild data in the event of a single drive failure. This kind of technology is a great option for businesses who want to ensure that their information is accessible all the time.
A search in the lotus notes iDataAgent Catalog retrieves a database’s transaction log, and then associates it with a particular Notes Database. The transaction log is divided into scaled-down data files called sign extents. Each one is 64MB in size. Each sign extent has a record that indicates the date of creation of the database and when it was previous run by the Fixup program.
There are a variety of levels of raid, and each provides an individual level of performance and fault tolerance. RAID 1 is the most popular, since it utilizes mirroring to basically double the storage capacity of an system. However, it’s not completely foolproof. If the failed mirrored disk is damaged it will take hours to recover data from the remaining drives. RAID 5 is another option that combines striping with parity to offer excellent storage and performance. It requires two extra disks for parity, however it is the most efficient performance and storage.