Raid Levels - D-Link DSN-6120 User Manual

MPIO
MC/S
MTU
CHAP
iSNS
Part 3: Dual controller

SBB
1.2.2

RAID levels

There are different RAID levels with different degree of data protection, data availability,
and performance to host environment. The description of RAID levels are on the following:
RAID 0
RAID 1
N-way
mirror
RAID 3
RAID 5
RAID 6
RAID 0+1
RAID 10
Multi-Path Input/Output.
Multiple Connections per Session
Maximum Transmission Unit.
Challenge Handshake Authentication Protocol. An optional
security mechanism to control access to an iSCSI storage system
over the iSCSI data ports.
Internet Storage Name Service.
Storage Bridge Bay. The objective of the Storage Bridge Bay
Working Group (SBB) is to create a specification that defines
mechanical, electrical and low-level enclosure management
requirements for an enclosure controller slot that will support a
variety of storage controllers from a variety of independent
hardware vendors ("IHVs") and system vendors.
Disk striping. RAID 0 needs at least one hard drive.
Disk mirroring over two disks. RAID 1 needs at least two hard
drives.
Extension to RAID 1 level. It has N copies of the disk.
Striping with parity on the dedicated disk. RAID 3 needs at least
three hard drives.
Striping with interspersed parity over the member disks. RAID 3
needs at least three hard drives.
2-dimensional parity protection over the member disks. RAID 6
needs at least four hard drives.
Mirroring of the member RAID 0 volumes. RAID 0+1 needs at
least four hard drives.
Striping over the member RAID 1 volumes. RAID 10 needs at
least four hard drives.
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