APC iSCSI SATA II installation and configuration manual Way mirror, RAID 0+1

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Sometimes, rebuild is called recover; these two have the same meaning. The following table is the relationship between RAID levels and rebuild.

RAID 0

RAID 1

N-way mirror

RAID 3

RAID 5

RAID 6

RAID 0+1

RAID 10

JBOD

Disk striping. No protection for data. RG fails if any hard drive fails or unplugs.

Disk mirroring over 2 disks. RAID 1 allows one hard drive fails or unplugging. Need one new hard drive to insert to the system and rebuild to be completed.

Extension to RAID 1 level. It has N copies of the disk. N-way mirror allows N-1 hard drives failure or unplugging.

Striping with parity on the dedicated disk. RAID 3 allows one hard drive failure or unplugging.

Striping with interspersed parity over the member disks. RAID 5 allows one hard drive failure or unplugging.

2-dimensional parity protection over the member disks. RAID 6 allows two hard drives failure or unplugging. If it needs to rebuild two hard drives at the same time, it will rebuild the first one, then the other in sequence.

Mirroring of RAID 0 volumes. RAID 0+1 allows two hard drive failures or unplugging, but at the same array.

Striping over the member of RAID 1 volumes. RAID 10 allows two hard drive failure or unplugging, but in different arrays.

The abbreviation of “Just a Bunch Of Disks”. No data protection. RG fails if any hard drive failures or unplugs.

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Contents ISCSI Sata II RAID Subsystem Table of Contents Advanced Operation Introduction Key Features Technical Specifications Terminology WidthCopy RAID rowScsi Accessed Fault- Tolerant Enclosures Scsi Enclosure ServicesMechanism to control access to an iSCSI storage system over ISNS Internet Storage Name ServiceRAID Concepts RAID FundamentalsDisk Striping Definition of RAID Levels Page Summary RAID Management RAID Level Description Min. DrivesVolume Relationship Diagram RAMPackaging, Shipment and Delivery Unpacking the SubsystemHDD Status Indicator Identifying Parts of the iSCSI RAID SubsystemFront View Parts FunctionLCD Display Panel LCD Control Module LCM Environment Status LEDsRear View Connecting the iSCSI RAID Subsystem to Your Network Powering OnInstalling Hard Drives Carrier Open ButtonISCSI Introduction HBA IP SANManagement Methods Web GUIRemote Control Secure Shell Console Serial PortEnclosure LCD Control Module LCMRAID System Buzzer Mail setting Æ Mail SettingISCSI RAID Subsystem GUI Hierarchy Login Reboot and Æ Reboot / ShutdownShutdown Sure to logout?Status Indicators LanguageQuick Install System Configuration System Setting IP Address Login Setting Mail Setting Notification Setting Net-SNMPhttp//net-snmp.sourceforge.netPage ISCSI Config Entity PropertyIP settings Default gateway2 NIC MTU / Jumbo frameNode Session Chap Account Volume Configuration Volume Create Wizard Page Physical Disk It’s done. View the Physical disk Vendor Serial Type Write cache Standby PD operations descriptionRAID Group It’s done. View the RAID groupRG column description Name TotalGB FreeGB Status HealthShow RAID group detail information Virtual Disk It’s done. View the Virtual disk VD column descriptionRight Priority Bg rate Status Health RAID #LUN RG name Page Logical Unit Select / Volume configuration / RAID group Example¾ Example Select / Volume configuration / Virtual disk Attach LUN to VD There are 2 methods to attach LUN to VD Select / Volume configuration / Physical disk / Volume configuration / Logical unitHave an error when deleting this RG Enclosure Management SES Configuration Hardware Monitor Hard Drive S.M.A.R.T. Function UPS Type Shutdown Battery Level Shutdown Delay s 4 UPSSystem Maintenance System InformationUpgrade Reset to DefaultConfig Import & Export Event Log Reboot and Shutdown LogoutAdvanced Operation RebuildWay mirror RAID 0+1RG Migration Page VD Extension Disk Roaming Support Microsoft Mpio and MC/SCertification List Vendor ModelISCSI Initiator Software Software/Release NumberGbE Switch Vendor Model ISCSI HBA card Vendor ModelHard drive Vendor Model Event Notifications PD events Level Type DescriptionHW events Level Type Description š EMS events Level Type Descriptionš RMS events Level Type Description š LVM3 events Level Type DescriptionVD migration VD name completes migration Finished š Battery backup events Level Type Description š iSCSI events Level Type Descriptionš Jbod events Level Type Description Known Issues š System maintenance events Level Type DescriptionMicrosoft iSCSI Initiator Click DiscoveryClick Targets Page Click Details Installation Steps for Large Volume Over 2TB IntroductionPage Page Mpio and MC/S Setup Instructions Enable Enable multi-path checkbox. Then click Advanced… Click Mpio tab, select Load Balance Policy to Round RobinChoose Round Robin in Load Balance Policy System information ISCSI RAID Subsystem