Managing RAID, Available RAID levels | Storageflex 3945N manual

Administrator Guide

6 Configuring Storage Settings

Managing RAID

Through ApplianceView, you can create, edit, deconstruct, and view a RAID.

Available RAID levels

Three types of RAID configurations are available for the data partition. These RAID levels can be used on a multi-drive appliance, whether or not a hardware RAID card is installed. If there is no hardware RAID card installed, you can use software RAID. It is important to note that for a two-drive appliance, the only RAID levels available are 0 and 1. For an appliance with three or more drives, RAID levels 0, 1, and 5 are available.

RAID 0: Single Large Volume

This type of RAID is also referred to as striping. RAID 0 interleaves blocks of data between several drives. Even though multiple drives exist in the array, to the user a RAID 0 appears as a single large volume. It is important to understand however, that there is no form of data backup when using a RAID 0. If a single drive fails, you will lose the entire array. This type of RAID should not be used for mission critical data. RAID 0 is available for any system with two or more drives.

RAID 1: Mirroring

This type of RAID is used to create a mirror copy of the information contained on one or more of the disks. In this method, a mirror is created for each drive containing data. For example, in a two drive RAID 1 setup, both drives contain the exact same data. Since there is 100% redundancy, there is no risk of losing data if one drive fails. RAID 1 is available for any system with two or more drives.

RAID 5: Disk Striping with Distributed Parity

This type of RAID features both striping and redundancy. This type of RAID uses a technique called distributed parity, which allows data to be recovered if one drive in the RAID fails. In addition, data blocks are interleaved evenly across the drives in parity bits. RAID 5 is only available for systems that have three or more drives.

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Storageflex 3945N manual Managing RAID, Available RAID levels, RAID 0 Single Large Volume, RAID 1 Mirroring

Contents

Storageflex Table of Contents 104 Who should use this guide Where to find informationWarranty & Liability Limitations About this Guide Administrator Guide Storageflex 3945N NAS RAID Limited Warranty Statement Administrator Guide Appliance Management Software Compatibility OverviewStorageflex Software Integrated ManagementPage To connect the appliance InstallationConnecting the Appliance to your network Configuring the Appliance for your network Linux Locating the Appliance on your networkTo locate the appliance, try one of the following methods Windows Administrator Guide Installing ApplianceView on Client PCs To install ApplianceView on a client PCAbout ApplianceView To search the network for local appliances Launching ApplianceViewSearching your network for local appliances To launch ApplianceView To locate a remote appliance by the URL Searching for remote appliancesTo locate a remote appliance by the IP address Select Search for Remote Logging on to a newly installed appliance To log on to an Appliance using ApplianceViewLocating Appliances that do not show up initially Entering the serial number Configuring a New Appliance with Setup Wizard Naming the appliance Configuring Network optional Verifying the date and time Assigning a password and Administrative Smtp Configuration Logging On a Configured Appliance Logging Off an ApplianceTo log off an Appliance Configuring the Appliance to Use a UPS To enable UPS monitoringManaging Users and Groups on the Appliance To add a new user Managing Users Locally Enter Host, Remote UID, and optionally charset To edit user informationClick Security To create NFS mappings for an existing user To create SMB mappings for an existing user Managing Groups Locally To remove a userTo organize users into a group To create or to modify NFS GID mapping for an existing group To edit group information To remove a group Managing Access to Folders and SharesTo create a new share using ApplianceView Managing Shares Administrator Guide Administrator Guide Managing Folders Select Rename current folderSelect Delete current folder To delete a folder using ApplianceView To rename a folder using ApplianceView Monitoring the Appliance Checking the Status of the ApplianceTo view the disk space information in ApplianceView To view the user connections in ApplianceView Checking User Connections to the Appliance To view the appliance’s settings in ApplianceView Viewing Settings of the Appliance To view event logs of the appliances management engine Viewing Logs of the Appliance To check status Click Maintenance Click Monitoring tabTo enable monitoring Monitoring Hardware Status of the Appliance To disable monitoring To set specific description label for any sensorTo fix the status of newly-inserted disk Changing the administrative password To change the administrative passwordClick the Administration tab To change the date and time for the Appliance Changing the date and time To shut down an appliance Shutting Down an Appliance Name and DNS Changes to Advanced Settings Click the DNS Search Order field Appliance NameNetwork Domain DNS Search Order Obtaining an IP Address from a Dhcp Server More Networking To specify a static IP address Setting a Static IP AddressTo have the Appliance automatically obtain an IP address Select Obtain an IP address from a Dhcp server To set up IP Failover Configuring NIC Teaming IP Failover Ways To Authenticate Users And Groups Security Modes Select Native mode Administrator Guide Select Mixed mode To authenticate users against Ldap server Authenticate Users and Groups against Ldap server Ldap Mode Manage Users and Groups with ApplianceView Local Mode To manage users and groups with ApplianceView Select Local mode Enabling Macintosh Support To enable Macintosh supportSelect Enable Macintosh Networking AppleTalk Macintosh/UNIX/FTP Support Enabling FTP Support Select Enable Unix Networking NFSSelect Enable Anonymous FTP Enabling Unix Support To edit the large network settings Large Network Settings To set up Ldap server Configuring Ldap Server To start Ldap server Click Security Click Ldap Server tabTo stop Ldap server Configuring NIS Policy Management Available Conditions Administrator Guide Available Actions Administrator Guide Administrator Guide Available Roles Managing Policy RulesTo add new rule To delete existing rule To edit existing rule To edit existing condition To edit existing actionTo edit existing role Updating Appliance via Web To update your Appliance using direct Internet connection Click MaintenanceTo update your Appliance using Proxy server To enable debug logs of the appliances management engine Troubleshooting the Appliance Click the Obtain server configuration snapshot button To disable debug logs of the appliances management engine What is inside the configuration snapshot RAID 1 Mirroring RAID 0 Single Large VolumeManaging RAID Available RAID levels Volume Management Creating RAIDs RAIDs You can easily add disks or partitions to LVM Logical Volume Managers LVMsDeleting RAIDs RAID Properties Creating Regions Regions can be created from LVMs RegionsDeleting LVMs LVMs Properties Region Properties Deleting Regions LVs Properties Logical Volumes LVsCreating Logical Volumes LVs Deleting LVs Creating Snapshots Snapshots Clustering Build new cluster window appears To configure cluster Administrator Guide Naming Folders Working from a Windows ComputerTo locate the Appliance in Network Neighborhood Click Find Now Finding appliances with Find ComputerSaving files to the appliance Windows Assigning a drive letter to the appliance Select the Network Browser or Chooser Connecting through the Network Browser or Chooser Mac OSWorking from a Macintosh Computer To connect to the Appliance Saving files to the appliance Macintosh Connecting through the Finder Mac OS From a Linux console, type mkdir directory name Enter Working from a Linux ComputerMounting a share on the appliance Linux and Unix To create a local mount To view the shares available for NFS mounting To disconnect a share mounted on the Linux clientType umount directory name Enter To print an online help screen Online HelpViewing Online Help Printing Online Help Screens Authentication Types Active Directory ServicesAdministrative Password Authentication Default Gateway Domain Name Service DNS ServerDisk Segment Dynamic Host Configuration Protocol Dhcp Server DomainEthernet Hub Folder TreeGateway address Hardware RAID Appliance Linux Logical VolumeKernel LAN cable Network Attached Storage NAS Logical Volume Manager LVMMedia Access Control MAC Address Name Primary Domain Controller PDC Physical Volume PVPatch Cable Partition Security RegionReiser File System Remote Appliance Status TCP/IP Setup WizardSnapshot Storage object User Authentication Types Uninterruptible Power Supply UPS Windows Internet Naming Service Wins Server Users Authenticated on the Ldap Server Ldap ModeWorkgroup Appendix C ApplianceWare Complete FAQ Table of Contents ApplianceView for Mac OS ApplianceWare Settings ApplianceWare and Active DirectoryAccessing ApplianceWare-based Appliance Over Network ApplianceWare Network Settings ApplianceWare Volume Management Whats In This Document? October 24 February 24February 18 February 04 April 11 What locales are supported by ApplianceView? Page ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 10 Open Command Prompt window Language= Country= Setup.bin ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 14 Route addition does not work. What should I do? Cd ~/ApplianceView Export BROWSER=opera ./ApplianceView ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 18 Cd ~/Applications/ApplianceView Macrouter.sh Sudo route delete -net ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 21 What cases Appliance wouldnt join to ADS domain? How will I know that Appliance is already joined into ADS? NFS protocol v.2 and v.3 are supported Can I access my Appliance via FTP? ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 25 ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 26 ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 27 ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 28 ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 29 ApplianceWare v.5.3 Complete FAQ February 24, 2004 Page 30