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RAID levels

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MPIO MC/S MTU CHAP iSNS 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. • Part 3: Dual controller SBB 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. • Part 4: 10GbE SFP+ CX4 Small Form-factor Pluggable is a compact, hot-pluggable transceiver used for both Fibre Channel and 10GbE. 10GBASE-CX4, a copper based 10 Gigabit Ethernet PHY. 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 Disk striping. RAID 0 needs at least one hard drive. RAID 1 Disk mirroring over two disks. RAID 1 needs at least two hard drives. N-way mirror Extension to RAID 1 level. It has N copies of the disk. RAID 3 Striping with parity on the dedicated disk. RAID 3 needs at least three hard drives. RAID 5 Striping with interspersed parity over the member disks. RAID 3 needs at least three hard drives. 10

Section	Page
Chapter 1 Overview	6
1.1 Features	6
1.1.1 Highlights	7
1.2 RAID concepts	8
1.2.1 Terminology	8
1.2.2 RAID levels	10
1.2.3 Volume relationship	11
1.3 iSCSI concepts	12
1.4 IP SAN storage specifications	13
1.4.1 Technical specifications	13
1.4.2 FCC and CE statements	16
Chapter 2 Installation	19
2.1 Package contents	19
2.2 Before installation	19
2.3 Enclosure	19
2.3.1 Front view	19
2.3.2 Front LED lights	20
2.3.3 Install drives	21
2.3.4 Rear view	22
2.4 Install battery backup module	25
2.5 Deployment	26
Chapter 3 Quick setup	29
3.1 Management interfaces	29
3.1.1 Serial console	29
3.1.2 Remote control	29
3.1.3 Web UI	30
3.2 How to use the system quickly	32
3.2.1 Quick installation	32
3.2.2 Volume creation wizard	35
Chapter 4 Configuration	38
4.1 Web UI management interface hierarchy	38
4.2 System configuration	39
4.2.1 System setting	39
4.2.2 Network setting	40
4.2.3 Login setting	41
4.2.4 Mail setting	42
4.2.5 Notification setting	43
4.3 iSCSI configuration	45
4.3.1 NIC	45
4.3.2 Entity property	48
4.3.3 Node	48
4.3.4 Session	51
4.3.5 CHAP account	52
4.4 Volume configuration	53
4.4.1 Physical disk	54
4.4.2 RAID group	57
4.4.3 Virtual disk	60
4.4.4 Snapshot	65
4.4.5 Logical unit	68
4.4.6 Example	69
4.5 Enclosure management	74
4.5.1 Hardware monitor	75
4.5.2 UPS	76
4.5.3 SES	78
4.5.4 Hard drive S.M.A.R.T.	78
4.6 System maintenance	79
4.6.1 System information	79
4.6.2 Event log	80
4.6.3 Upgrade	82
4.6.4 Firmware synchronization	82
4.6.5 Reset to factory default	83
4.6.6 Import and export	83
4.6.7 Reboot and shutdown	84
4.7 Home/Logout/Mute	84
4.7.1 Home	84
4.7.2 Logout	84
4.7.3 Mute	85
Chapter 5 Advanced operations	86
5.1 Volume rebuild	86
5.2 RG migration	88
5.3 VD extension	89
5.4 Snapshot	89
5.4.1 Create snapshot volume	90
5.4.2 Auto snapshot	91
5.4.3 Rollback	92
5.4.4 Snapshot constraint	93
5.5 Disk roaming	95
5.6 VD clone	95
5.7 SAS JBOD expansion	103
5.7.1 Connecting JBOD	103
5.7.2 Upgrade firmware of JBOD	105
5.8 MPIO and MC/S	106
5.9 Trunking and LACP	108
5.10 Dual controllers (only for DSN-6410 with DSN-640)	109
5.10.1 Perform I/O	109
5.10.2 Ownership	110
5.10.3 Controller status	111
5.11 Replication	112
5.12 VLAN	122
Chapter 6 Troubleshooting	125
6.1 System buzzer	125
6.2 Event notifications	125
Appendix	133
A. Certification list	133
B. Microsoft iSCSI initiator	136