Target Requirements | Promise Technology EX4650A, EX8650A guide

Chapter 6: Technology Background

RAID 0

A RAID 0 source logical drive can migrate to the following target logical drives:

Target	Requirements

RAID 0	Add physical drives.

RAID 1	2 physical drives only.
	Only a single-drive RAID 0 can migrate to RAID 1 by adding 1
	physical drive.

RAID 1E	3 or more physical drives.

RAID 5	3 physical drives minimum, 16 maximum.
	RAID 0 must have less than 16 physical drives.

RAID 6	4 physical drives minimum, 16 maximum.

RAID 10	4 physical drives minimum.
	Even number of physical drives.

RAID 50	6 physical drives minimum, 16 per axle maximum.

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

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Promise Technology EX4650A, EX8650A user manual Target Requirements

Contents

Supertrak Trademarks CopyrightImportant data protection information Recommendations Radio 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 209 About This Manual Introduction Product Overview XOR MicroprocessorHot-Swapping WebPAM PRO Management Software Operating System SupportBrowser Support Advanced Hardware Design Features Benefits Key Features and Benefits Compatibility Features Benefits Specifications Features BenefitsCompatibility Unpacking the SuperTrak Installation Installing the SuperTrak Card SuperTrak EX4650 card SuperTrak EX8650 card + R G + + - + SAS Connections and ID Numbers Scenario 1 Virtual Enclosure SgpioSuperTrak 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 Expanders Level Number of Drives Choosing the Physical Drives Creating a Logical Drive Page Installation Page Installation Utility Server Installing WebPAM PROAgent Operating System Support Browser Support Internet Browser Introduction dialog box Installing WebPAM PRO onto a Windows PC or Server License 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 Connection Https//192.168.10.2288443/promise Login Screen Click the Add Subsystem/Host tab Setting up WebPAM PRO Add Subsystem/Host tab Installing Drivers Driver Diskette for Windows USB Memory Stick for WindowsDriver Diskette for Linux Windows Vista New OS Installation Existing System Confirming Driver Installation Windows Server Existing System Windows XP Existing System Windows Existing System Type cd umount /mnt/floppy Red Hat Linux Enterprise 4.4 SuSE Linux Enterprise SuperBuild Utility SuperTrak Bios SuperTrak Bios screen SuperTrak Bios screen, logical drive offline SuperBuild Main Menu Main Menu Controller Selection Controller Information Physical Drive Management Viewing Physical DrivesViewing Physical Drive Information Managing Physical Drive Problems Disk Array Management Viewing Disk ArraysViewing Disk Array Information Creating a Disk Array Changing Disk Array Settings Rebuilding a Disk ArrayDeleting a Disk Array Logical Drive Management Viewing Logical DrivesViewing Logical Drive Information Write Cache Policy Choose from Write Back or Write Through Creating a Logical Drive Initializing a Logical Drive Deleting a Logical Drive Changing Logical Drive Settings Identifying a Critical Logical Drive Managing Logical Drive Problems Spare Drive Available Rebuilding the Logical DriveNo Spare Drive Available Manual Rebuild Identifying an Offline Logical Drive Finding the Failed Physical Drive RAID 1, 5, 6, 10, 50 RAID Viewing Spare Drives Spare Drive ManagementViewing Spare Drive Information Creating a Spare Drive Changing Spare Drive Settings Deleting a Spare Drive Background Activity Event Log Viewing RAM EventsViewing Nvram Events Clearing the Event Logs Setting the Time Zone Time SyncSynchronizing Time with an Embedded Site SAS Ready LEDs MiscellaneousSgpio Backplane Buzzer Enabling or Disabling the Buzzer Page Management with WebPAM PRO Login Screen Management with WebPAM PRO WebPAM PRO interface Accessing the Interface Using Tree View Using the Header WebPAM PRO Tree View Using Management View Viewing the Event Frame Choosing a Display Language Saving the Event Frame Deleting the Event FrameViewing the Storage Network Storage Network appears in Tree View Logging out of WebPAM PRO Making User Settings Managing UsersViewing User Information Making Your Own User Settings Changing a User’s PasswordChanging Your Own Password Creating a User Deleting a UserList of User Privileges Management with WebPAM PRO Working with Subsystem/Host Management Viewing Subsystem/Host InformationAdding a Subsystem or Host Setting User Privilege Deleting a Subsystem or HostIn-Band versus Out-of-Band Page Managing Software Services Viewing Service StatusChanging Web Server Settings Restarting the Tomcat Server Setting up Email ServiceWindows Linux Setting up Extended Smtp Setting Event Frame Refresh TimeSending a Test Email Message Changing CIM Server Settings Changing CIM Client Settings Managing the Host Setting User RightsViewing Host Information Refreshing the WebPAM PRO Screen Managing the Subsystem Viewing Subsystem InformationClearing Statistical Data Setting an Alias for the Subsystem Updating the FirmwareClick the Clear Statistics link Viewing the Runtime Event Log Checking Subsystem HealthSaving the Runtime Event Log Severity Definitions Viewing the Nvram Event Log Clearing the Runtime Event Log Saving the Nvram Event Log Clearing the Nvram Event LogViewing Current Background Activities Making Background Activity Settings Running Background Activities Running Media PatrolRunning PDM Scheduling an Activity Viewing Scheduled Activities 112 Deleting a Scheduled Activity Viewing System Configuration 114 Managing the Controller Viewing Controllers InformationViewing Controller Information 116 Viewing Controller Statistics Making Controller Settings Clearing an Orphan Watermark Viewing Battery Information Making Buzzer Settings Testing the BuzzerSilencing the Buzzer Viewing Buzzer Information Viewing Enclosure Information Managing Enclosures Viewing a List of Physical Drives Managing Physical DrivesLocating a Physical Drive Virtual or Third Party Enclosures Making Global Physical Drive Settings Promise EnclosuresSata Drives SAS Drives Making Physical Drive Settings Adjustable ItemsViewing Physical Drive Statistics Clearing Stale and PFA Conditions Forcing a Physical Drive Offline or Online 126 Locating a Disk Array Managing Disk Arrays 128 Creating a Disk Array Automatic Configuration Creating a Disk Array Express Configuration 131 Creating a Disk Array Advanced Configuration Disk Array CreationLogical Drive Creation Summary Disk Array Operational Status Physical Drive Status Making Disk Array Settings 136 137 Migrating a Disk Array Rebuilding Manually Rebuilding Automatically Running PDM on a Disk Array Running Media Patrol on a Disk Array Preparing a Disk Array for Transport Transitioning a Disk Array 142 Managing Logical Drives Viewing Information for All Logical DrivesLogical Drive Status Logical Drive Synchronization Locating a Logical Drive Viewing Logical Drive Statistics 146 Viewing the Logical Drive Check Table Running Redundancy Check 148 Viewing a List of Spare Drives Managing Spare Drives 150 Deleting Spare Drive Making Spare Drive Settings Running Spare Check Working with the Logical Drive Summary Viewing a List of All Logical DrivesViewing Individual Logical Drive Information 154 Introduction to RAID Technology Background RAID 0 Striping interleaves data across multiple drives RAID 0 Stripe RAID 1 Mirrors identical data to two drives RAID 1 Mirror Enhanced Data Mirrors Physical Drives RAID 1E Enhanced Mirror RAID 5 stripes all drives with data and parity information RAID 5 Block Striping with Distributed Parity RAID 6 stripes all drives with data and dual parity RAID 6 Block and Double Parity Stripe Data Stripe Mirror Physical Drives RAID 10 Mirror / Stripe Component Minimum Maximum RAID 50 Striped Distributed Parity RAID 50 Axles 3,3,3 RAID 60 is a combination of RAID 6 and RAID RAID 60 Striping of Double Parity RAID 60 Axles 5,5 10,10 4,4,4 167 Advantages Disadvantages Choosing a RAID Level RAID 1E 170 High Read data transaction rate Choosing Sector Size Choosing Stripe Block Size Choosing Cache Policy TB LimitationLogical Drive Size Sector Size Capacity Coercion Read Cache PolicyWrite Cache Policy Hot Spare Drives Initialization RAID Level Migration Partition and Format the Logical Drive Target Requirements None Add physical drives maximum RAID 10 must have less than 16 physical drives Physical drives maximum PDM Ranges of Disk Array Expansion Current LD Size Maximum LD Sector Size Expansion Size Delete and Recreate Media Patrol Predictive Data Migration PDMPDM Triggers Drive Failure and Automatic Rebuild Transition 186 Manual Transition Automatic Transition 188 Critical & Offline Logical Drives When a Physical Drive Fails 190 With a Hot Spare Drive Without a Hot Spare DriveRebuild Operation 192 Frequently Asked Questions Pre-Installation Speed, Device Types, Capacity, CablingHow can I change the resources that the SuperTrak uses? Drive Issues Can I use Atapi devices on the SuperTrak EX Series?Will Acpi work with HDDs on the SuperTrak EX Series? Support Installation Issues Capacity, Booting Post-InstallationWhy 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 States Netherlands GermanyItaly Limited Warranty TaiwanChina Disclaimer of other warranties Your Responsibilities Returning the Product For Repair Or 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 Firmware Installing the WebPAM PRO Update File Downloading the WebPAM PRO Update FileUpdating WebPAM PRO Logging into WebPAM PRO Appendix C Battery Backup Unit Installing the BBU SuperTrak EX Controller 212 Numerics Index 214 146 Axles 66 Capacity 18, 65, 132 List 59 150 List 73 Logical drive 65, 67, 133