D-Link DSN-626 User Manual - Page 18
RAID Levels, Volume Relationship, Just a Bunch Of Disks
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D-Link Document - User Manual RAID Levels There are various RAID levels with different degrees of data protection, data availability, and performance. A description of supported RAID levels follow: Type RAID 0 RAID 1 N-way mirror RAID 3 RAID 5 RAID 6 RAID 0+1 RAID 10 RAID 30 RAID 50 RAID 60 JBOD Description Disk striping. Disk mirroring over two disks. Extension to RAID 1 level. It has N copies of the disk. Striping with parity on the dedicated disk. Striping with interspersed parity over the member disks. 2-dimensional parity protection over the member disks. Mirroring of the member RAID 0 volumes. Striping over the member RAID 1 volumes. Striping over the member RAID 3 volumes. Striping over the member RAID 5 volumes. Striping over the member RAID 6 volumes. The abbreviation of Just a Bunch Of Disks. Independently address a drive. Min. No. of Drives 1 2 N 3 3 4 4 4 6 6 8 1 Volume Relationship The following graphic is the volume structure which D-Link has designed. It describes the relationship of RAID components. LUN 1 VD 1 LUN 2 VD 2 LUN 3 VD + RG + + PD 1 PD 2 PD 3 DS Cache Volume RAM Copyright@2014 D-Link System, Inc. All Rights Reserved. 18