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Promise Technology EX4650A, EX8650A user manual Physical drives maximum

Models: EX8650A EX4650A EX8650 EX4650

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Chapter 6: Technology Background

RAID 50

A RAID 50 Source logical drive can migrate to the following Target logical drives:

Target	Requirements

RAID 0	None.

RAID 1E	None.

RAID 5	16 physical drives maximum.
	RAID 50 must have less than 16 physical drives.

RAID 6	16 physical drives maximum.
	RAID 50 must have less than 16 physical drives.

RAID 10	Even number of physical drives.

RAID 50	Add physical drives. 16 per axle maximum.

RAID 60	8 physical drives minimum, 16 per axle maximum.

RAID 60

A RAID 60 Source logical drive can migrate to the following Target logical drives:

Target	Requirements

RAID 6	16 physical drives maximum.
	RAID 60 must have less than 16 physical drives.

RAID 60	Add physical drives. 16 per axle maximum.

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Promise Technology EX4650A, EX8650A user manual Physical drives maximum

Contents

Supertrak Trademarks CopyrightImportant data protection information RecommendationsRadio Frequency Interference Statement Page Contents SuperBuild Utility Installing Drivers,SuperBuild Utility, Management with WebPAM PRO, Management with WebPAM PRO, Management with WebPAM PRO, Contents Technology Background, Appendix a Partition and Format Appendix B UpgradesSupport 209About This Manual IntroductionXOR Microprocessor Product OverviewHot-Swapping Operating System Support WebPAM PRO Management SoftwareBrowser Support Advanced Hardware Design Features Benefits Key Features and BenefitsCompatibility Features Benefits Features Benefits SpecificationsCompatibility Unpacking the SuperTrak InstallationInstalling the SuperTrak Card SuperTrak EX4650 card SuperTrak EX8650 card + R G + + - + Scenario 1 Virtual Enclosure Sgpio SAS Connections and ID NumbersSuperTrak SAS Port Enclosure ID Range Drive ID Range Scenario 3 External Enclosures Daisy Chain Scenario 2 Virtual Enclosure Host PCScenario 4 External Enclosures Parallel Scenario 5 SAS ExpandersLevel Number of Drives Choosing the Physical DrivesCreating a Logical Drive Page Installation Page Installation Utility Server Installing WebPAM PROAgent Operating System SupportBrowser Support Internet BrowserIntroduction dialog box Installing WebPAM PRO onto a Windows PC or ServerLicense Agreement dialog box Setup Type dialog box Choose Destination Location dialog box SSL Security Options dialog box Ready to Install dialog box Install Complete dialog box Installing WebPAM PRO onto a Linux PC or Server License Agreement dialog box Choose Install Product dialog box Choose Install Folder dialog box WebPAM PRO Agent Configuration dialog box SSL Security Options dialog box WebPAM PRO Utility Server Configuration dialog box Register On-line dialog box Logging in at the Host PC Logging into WebPAM PROLogging in over the Network Regular ConnectionHttps//192.168.10.2288443/promise Login ScreenClick the Add Subsystem/Host tab Setting up WebPAM PROAdd Subsystem/Host tab Installing Drivers USB Memory Stick for Windows Driver Diskette for WindowsDriver Diskette for Linux Windows Vista New OS InstallationExisting System Confirming Driver InstallationWindows Server Existing System Windows XP Existing System Windows Existing System Type cd umount /mnt/floppy Red Hat Linux Enterprise 4.4SuSE Linux Enterprise SuperBuild Utility SuperTrak BiosSuperTrak Bios screen SuperTrak Bios screen, logical drive offline SuperBuild Main Menu Main MenuController Selection Controller Information Viewing Physical Drives Physical Drive ManagementViewing Physical Drive Information Managing Physical Drive Problems Viewing Disk Arrays Disk Array ManagementViewing Disk Array Information Creating a Disk Array Rebuilding a Disk Array Changing Disk Array SettingsDeleting a Disk Array Viewing Logical Drives Logical Drive ManagementViewing Logical Drive Information Write Cache Policy Choose from Write Back or Write Through Creating a Logical DriveInitializing a Logical Drive Deleting a Logical Drive Changing Logical Drive SettingsIdentifying a Critical Logical Drive Managing Logical Drive ProblemsSpare Drive Available Rebuilding the Logical DriveNo Spare Drive Available Manual RebuildIdentifying an Offline Logical Drive Finding the Failed Physical DriveRAID 1, 5, 6, 10, 50 RAID Viewing Spare Drives Spare Drive ManagementViewing Spare Drive Information Creating a Spare DriveChanging Spare Drive Settings Deleting a Spare Drive Background Activity Viewing RAM Events Event LogViewing Nvram Events Clearing the Event Logs Time Sync Setting the Time ZoneSynchronizing Time with an Embedded Site SAS Ready LEDs MiscellaneousSgpio Backplane BuzzerEnabling or Disabling the Buzzer Page Management with WebPAM PRO Login Screen Management with WebPAM PRO WebPAM PRO interface Accessing the InterfaceUsing Tree View Using the HeaderWebPAM PRO Tree View Using Management ViewViewing the Event Frame Choosing a Display LanguageDeleting the Event Frame Saving the Event FrameViewing the Storage Network Storage Network appears in Tree View Logging out of WebPAM PROManaging Users Making User SettingsViewing User Information Changing a User’s Password Making Your Own User SettingsChanging Your Own Password Deleting a User Creating a UserList of User Privileges Management with WebPAM PRO Viewing Subsystem/Host Information Working with Subsystem/Host ManagementAdding a Subsystem or Host Deleting a Subsystem or Host Setting User PrivilegeIn-Band versus Out-of-Band Page Viewing Service Status Managing Software ServicesChanging Web Server Settings Restarting the Tomcat Server Setting up Email ServiceWindows LinuxSetting Event Frame Refresh Time Setting up Extended SmtpSending a Test Email Message Changing CIM Server Settings Changing CIM Client SettingsManaging the Host Setting User RightsViewing Host Information Refreshing the WebPAM PRO ScreenViewing Subsystem Information Managing the SubsystemClearing Statistical Data Updating the Firmware Setting an Alias for the SubsystemClick the Clear Statistics link Viewing the Runtime Event Log Checking Subsystem HealthSaving the Runtime Event Log Severity DefinitionsViewing the Nvram Event Log Clearing the Runtime Event LogClearing the Nvram Event Log Saving the Nvram Event LogViewing Current Background Activities Making Background Activity Settings Running Media Patrol Running Background ActivitiesRunning PDM Scheduling an Activity Viewing Scheduled Activities112 Deleting a Scheduled Activity Viewing System Configuration114 Viewing Controllers Information Managing the ControllerViewing Controller Information 116 Viewing Controller Statistics Making Controller SettingsClearing an Orphan Watermark Viewing Battery InformationTesting the Buzzer Making Buzzer SettingsSilencing the Buzzer Viewing Buzzer Information Viewing Enclosure Information Managing EnclosuresViewing a List of Physical Drives Managing Physical DrivesLocating a Physical Drive Virtual or Third Party EnclosuresPromise Enclosures Making Global Physical Drive SettingsSata Drives SAS Drives Adjustable Items Making Physical Drive SettingsViewing Physical Drive Statistics Clearing Stale and PFA Conditions Forcing a Physical Drive Offline or Online126 Locating a Disk Array Managing Disk Arrays128 Creating a Disk Array Automatic Configuration Creating a Disk Array Express Configuration 131 Disk Array Creation Creating a Disk Array Advanced ConfigurationLogical Drive Creation Summary Disk Array Operational Status Physical Drive Status Making Disk Array Settings136 137 Migrating a Disk Array Rebuilding Manually Rebuilding AutomaticallyRunning PDM on a Disk Array Running Media Patrol on a Disk ArrayPreparing a Disk Array for Transport Transitioning a Disk Array142 Viewing Information for All Logical Drives Managing Logical DrivesLogical Drive Status Logical Drive Synchronization Locating a Logical DriveViewing Logical Drive Statistics 146 Viewing the Logical Drive Check Table Running Redundancy Check148 Viewing a List of Spare Drives Managing Spare Drives150 Deleting Spare Drive Making Spare Drive SettingsRunning Spare Check Viewing a List of All Logical Drives Working with the Logical Drive SummaryViewing Individual Logical Drive Information 154 Introduction to RAID Technology BackgroundRAID 0 Striping interleaves data across multiple drives RAID 0 StripeRAID 1 Mirrors identical data to two drives RAID 1 MirrorEnhanced Data Mirrors Physical Drives RAID 1E Enhanced MirrorRAID 5 stripes all drives with data and parity information RAID 5 Block Striping with Distributed ParityRAID 6 stripes all drives with data and dual parity RAID 6 Block and Double Parity StripeData Stripe Mirror Physical Drives RAID 10 Mirror / StripeComponent Minimum Maximum RAID 50 Striped Distributed ParityRAID 50 Axles 3,3,3 RAID 60 is a combination of RAID 6 and RAID RAID 60 Striping of Double ParityRAID 60 Axles 5,5 10,10 4,4,4 167 Advantages Disadvantages Choosing a RAID LevelRAID 1E 170 High Read data transaction rate Choosing Sector Size Choosing Stripe Block SizeTB Limitation Choosing Cache PolicyLogical Drive Size Sector Size Read Cache Policy Capacity CoercionWrite Cache Policy Hot Spare Drives InitializationRAID Level Migration Partition and Format the Logical DriveTarget Requirements None Add physical drives maximum RAID 10 must have less than 16 physical drives Physical drives maximum PDM Ranges of Disk Array ExpansionCurrent LD Size Maximum LD Sector Size Expansion Size Delete and RecreatePredictive Data Migration PDM Media PatrolPDM Triggers Drive Failure and Automatic Rebuild Transition186 Manual Transition Automatic Transition188 Critical & Offline Logical Drives When a Physical Drive Fails190 Without a Hot Spare Drive With a Hot Spare DriveRebuild Operation 192 Pre-Installation Speed, Device Types, Capacity, Cabling Frequently Asked QuestionsHow can I change the resources that the SuperTrak uses? Can I use Atapi devices on the SuperTrak EX Series? Drive IssuesWill Acpi work with HDDs on the SuperTrak EX Series? Support Post-Installation Installation Issues Capacity, BootingWhy can’t I make a dedicated spare drive in WebPAM PRO? Why can’t I run WebPAM PRO in Konqueror? Technical Support ServicesContacting Technical Support United StatesGermany NetherlandsItaly Taiwan Limited WarrantyChina Disclaimer of other warranties Your Responsibilities Returning the Product For RepairOr retailer Appendix a Partition and Format Click the Next button to start the Wizard Appendix a Partition and Format 206 Downloading Bios and Firmware File Updating SuperTrak Bios and FirmwareInstalling the WebPAM PRO Update File Downloading the WebPAM PRO Update FileUpdating WebPAM PRO Logging into WebPAM PROAppendix C Battery Backup Unit Installing the BBU SuperTrak EX Controller 212 Numerics Index214 146 Axles 66 Capacity 18, 65, 132 List 59 150 List 73 Logical drive 65, 67, 133