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8 Configuring RAID in a Dell workstation | 1.0
2.2 RAID 1 – Data mirroring (100% redundancy) for data protection
 100% duplication and instant failover.
 Requires two drives. Same capacity is expected. When two different capacity drives are used, Volume
size will be same as that of the smaller drives capacity. e.g. if you use two 2TB drives, you get 2.0TB of
RAID1 volume.
 Advantage – With proper load balancing, read performance can be twice that of a single drive. Write
performance is almost same as single drive. Suitable for OS volumes.
 Disadvantage – Cost