A-12Adaptec Storage Manager Pro for DuraStor User’s GuideMirror Set (RAID 1)A mirror set is an array made up of two different disk drives. Amirror set stores and maintains the same (redundant) data on eachof the two drives. Since a mirror set is an independent-access array,it supports multiple simultaneous read and write operations.Figure A-5 represents a mirror set. The free space of the larger diskdrive is not used.Figure A-5 Mirror setApplications Suitable for Mirror SetsMirror sets are particularly suitable for the following types ofapplications: Data for which reliability requirements are the first priority Disaster-tolerant systems requiring continuous data access Cloning of online data to obtain a consistent copy of anapplication’s data for backup purposes with minimumapplication outage Data to which high-performance access is required, and forwhich cost of storage is secondaryFree Space (2 GB)Mirror Set4 GBDrive 14 GBDrive 2 (Redundant)4 GBBlocks 1, 2, 3, ...
