4-26 Configuring Your ServerRAID0In RAID0, data to be recorded is distributed to HDDs. 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 HDDs to be accessed collectively, it can provide the best diskaccess performance.IMPORTANT: RAID0 cannot have data redundancy. If a HDD isdefected, the data saved in the HDD cannot be recovered.RAID ControllerHDD 1 HDD 2Stripe 1HDD 3Stripe 4Stripe 2Stripe 5Stripe 3Stripe 6RAID1In the RAID1 level, data saved in a HDD is written to another HDD without change. The mode iscalled "mirroring".When data is written onto a single HDD, the same data is written onto another HDD. If either of theHDDs is defected, the other HDD containing the same data can substitute for the defected HDD.Thus the system can continue to operate without interruption.RAID ControllerHDD 1 HDD 2Stripe 1Stripe 2Stripe 1Stripe 2
