Lotus Notes’ RAID technology helps protect data from destruction in the event of a disk failure. It blends multiple drives on hard disks into one file system and makes use of fail-tolerance to restore information in the event of a single drive failure. This kind of technology is a great choice for companies who need to ensure that their data is accessible throughout the day.
A search in the Lotus Notes iDataAgent catalog retrieves the transaction log for a database and connects it you can find out more to the specific Notes database. The transaction log is divided into scaled-down data files called sign extents, each of which is 64MB in size. Each sign extent has an entry indicating when the database was first created and when the Fixup activity ran it before.
There are a variety of levels of raid, each offering various levels of performance and fault tolerance. RAID 1 is most common because it uses mirroring in order to double the storage capacity. It’s not 100% reliable. It can take several hours for the remaining drives to recover information if the mirror disk fails. RAID 5 is a combination of striping and parity that gives you good storage and performance. It requires two additional disks for parity but offers the best balance between storage and efficiency.