Configuring Your Server 4-41RAID0In RAID0, data to be recorded is distributed to hard disk drives. The mode is called "striping".In the figure below, data is recorded in stripe 1 (disk 1), stripe 2 (disk 2), and stripe 3 (disk 3)… inthe order. Because RAID0 allows all hard disk drives to be accessed collectively, it can provide thebest disk access performance.IMPORTANT: RAID0 cannot have data redundancy. If a hard diskdrive is defected, the data saved in the hard disk drive cannot berecovered.RAID ControllerHDD 1 HDD 2Stripe 1HDD 3Stripe 4Stripe 2Stripe 5Stripe 3Stripe 6RAID1In the RAID1 level, data saved in a hard disk drive is written to another hard disk drive withoutchange. The mode is called "mirroring".When data is written onto a single hard disk drive, the same data is written onto another hard diskdrive. If either of the hard disk drives is defected, the other hard disk drive containing the same datacan substitute for the defected hard disk drive. Thus the system can continue to operate withoutinterruption.RAID ControllerHDD 1 HDD 2Stripe 1Stripe 2Stripe 1Stripe 2
