RAID 1E | Promise Technology EX4650, EX8658, EX8654, EX8650 specification

		Chapter 7: Technology Background

RAID 1E

	Advantages	Disadvantages

	Implemented as a mirrored logical	Very high physical drive overhead –
	drive whose segments are RAID 0	uses only 50% of total capacity
	logical drives
	High I/O rates are achieved thanks to
	multiple stripe segments
	Can use an odd number of physical
	drives

Recommended Applications for RAID 1E

•Imaging applications

•Database servers

•General fileserver

RAID 5

Advantages	Disadvantages

High Read data transaction rate	Physical drive failure has a medium
Medium Write data transaction rate	impact on throughput
Medium Write data transaction rate
Good aggregate transfer rate
Most versatile RAID level

Recommended applications for RAID 5:

•File and Application servers

•WWW, E-mail, and News servers

•Intranet servers

233

Image 247

Promise Technology EX4650, EX8658, EX8654, EX8650 manual RAID 1E

Contents

Supertrak Recommendations CopyrightTrademarks Important data protection information Radio Frequency Interference Statement Page Contents Installing Drivers SuperBuild Utility Installing Drivers, 107 SuperBuild Utility,Management with WebPAM PRO Management with WebPAM PRO, Managing Software Services, Management with WebPAM PRO, Management with WebPAM PRO, Technology Background, Troubleshooting Appendix D LED Backplane Connections Appendix a Partition and Format Appendix B UpgradesSupport 287 Xiv About This Manual Introduction XOR Microprocessor Product OverviewHot-Swapping Operating System Support WebPAM PRO Management Software Advanced Hardware Design Key Features and BenefitsFeatures Benefits Browser Support Compatibility Features Benefits Advanced Hardware Design Features Benefits Compatibility Specifications Unpacking the SuperTrak Card InstallationPage Installing the SuperTrak Card SuperTrak EX4650 card SAS Ports Ch1-4 SuperTrak EX8654 card SuperTrak EX16650 card + R G + + - + Connecting SuperTrak to a VTrak Jbod Enclosure Connecting SuperTrak to a SuperSwap Enclosure SuperTrak SAS Port Enclosure ID Range Drive ID Range SAS Connections and ID NumbersScenario 1 Virtual Enclosure Sgpio Scenario 2 Virtual Enclosure Host PC Scenario 4 External Enclosures Parallel Scenario 3 External Enclosures Daisy ChainScenario 5 SAS Expanders Level Number of Drives Choosing the Physical Drives Creating a Logical Drive Installation Page Installation Page Installing onto Windows Installing the CLI License Agreement dialog box Choose Destination Location dialog box Ready to Install dialog box Install Complete dialog box Installing onto Linux Introduction dialog box License Agreement dialog box Choose Install Folder dialog box Pre-Installation Summary dialog box Install Compete dialog box Register On-line dialog box Sh CLIInstaller...FreeBSD.bin -i silent Installing the CLI onto FreeBSD Sh CLIInstaller...VMware.bin -i silent Installing the CLI onto VMware Operating System Support Installing WebPAM PROUtility Server Agent Browser Support Internet Browser Installing WebPAM PRO onto Windows License Agreement dialog box Setup Type dialog box Custom Setup dialog box Choose Destination Location dialog box WebPAM PRO Server dialog box Ready to Install dialog box Install Complete dialog box WebPAMPRO...Linux.bin file, then press Enter Installing WebPAM PRO onto Linux License Agreement dialog box Choose Install Product dialog box Choose Install Folder dialog box SSL Security Options dialog box Pre-Installation Summary dialog box Install Compete dialog box Register On-line dialog box Regular Connection Logging into WebPAM PROLogging in at the Host PC Logging in over the Network Https//192.168.10.2288443/promise Login Screen Click the Add Subsystem/Host tab Setting up WebPAM PRO Add Subsystem/Host tab Installing Drivers Windows Driver Installation MediaClick the Driver for Windows button Tar zxvf RH-306010003.tar.gz Linux and FreeBSD Windows Server New OS InstallationLoad Driver Existing System Confirming Driver InstallationChoose the Don’t search online option Windows Vista Existing System Windows Server Existing System Windows XP Existing System Type cd /mnt/floppy Type sh ./installRed Hat Linux Enterprise 4.4 Type mount -r /dev/fd0 /mnt/floppy Fedora Core Fedora Core 7 Type cd /media/floppy Type sh ./install Type cd umount /media/floppySuSE Open 10.2, 10.3, 10.5 Type mount /dev/fd0 /media/floppy SuSE Sles 10, 10 SP1 Miracle Linux Option 1. Device Node Exists FreeBSD 6.1Option 2. Device Node Does Not Exist Existing System VMware ESX Server 3.0.2 Esxcfg-boot -rg esxcfg-boot -b Installing Drivers Page SuperBuild Utility SuperTrak Bios SuperTrak Bios screen SuperTrak Bios screen, logical drive offline SuperBuild Main Menu Accessing the Main Menu Selecting a Controller Memory Type DDR2 Sdram Viewing Controller Information Viewing Physical Drives Managing Physical DrivesViewing Physical Drive Information Managing Physical Drive Problems Viewing Disk Arrays Managing Disk ArraysViewing Disk Array Information Creating a Disk Array Rebuilding a Disk Array Changing Disk Array SettingsDeleting a Disk Array Viewing Logical Drives Managing Logical DrivesViewing Logical Drive Information Creating a Logical Drive Write Cache Policy Choose from Write Back or Write Through Initializing a Logical Drive Deleting a Logical Drive Changing Logical Drive Settings Selected logical drive is removed from the list Creating a Spare Drive Managing Spare DrivesViewing Spare Drives Viewing Spare Drive Information Changing Spare Drive Settings Deleting a Spare Drive Viewing Background Activity Viewing RAM Events Managing the Event LogViewing Nvram Events Clearing the Event Logs Working with Time Sync Setting the Time ZoneSynchronizing Time with an Embedded Site Working with the Buzzer Using the Miscellaneous MenuMaking the SAS Ready LED Setting Making the Sgpio Backplane Setting Enabling or Disabling the Buzzer 106 Management with WebPAM PRO 108 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 Deleting the Event Frame Saving the Event FrameViewing the Storage Network Storage Network appears in Tree View Logging out of WebPAM PRO Managing 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 119 Viewing Subsystem/Host Information Working with Subsystem/Host ManagementAdding a Subsystem or Host Deleting a Subsystem or Host In-Band versus Out-of-Band Setting User Privilege Viewing Service Status Managing Software ServicesChanging Web Server Settings Linux Setting up Email ServiceRestarting the Tomcat Server Windows Setting Event Frame Refresh Time Setting up Extended SmtpSending a Test Email Message Changing CIM Server Settings Changing CIM Client Settings Refreshing the WebPAM PRO Screen Setting User RightsManaging the Host Viewing Host Information Viewing Subsystem Information Managing the Subsystem Click the Clear Statistics link Setting an Alias for the SubsystemClearing Statistical Data Updating the Firmware Viewing the Runtime Event Log Checking Subsystem HealthSeverity Definitions Clearing the Runtime Event Log Saving the Runtime Event LogViewing the Nvram Event Log Clearing the Nvram Event Log Saving the Nvram Event Log Viewing Current Background Activities Making Background Activity Settings Running Media Patrol Running Background Activities Viewing Scheduled Activities Running PDMScheduling an Activity 136 Deleting a Scheduled Activity Viewing System Configuration 138 Viewing Controllers Information Managing the ControllerViewing Controller Information 140 Viewing Controller Statistics Making Controller Settings Clearing an Orphan Watermark Viewing Battery Information Testing the Buzzer Making Buzzer SettingsSilencing the Buzzer Viewing Buzzer Information Viewing Enclosure Information Managing Enclosures Locating a Physical Drive Viewing a List of Physical DrivesVirtual or Third Party Enclosures Promise Enclosures Making Global Physical Drive SettingsSata Drives SAS Drives Adjustable Items Making Physical Drive SettingsViewing Physical Drive Statistics Clearing Stale and PFA Conditions Locating a Disk Array 151 Creating a Disk Array Automatic Configuration Creating a Disk Array Express Configuration 154 Disk Array Creation Creating a Disk Array Advanced ConfigurationLogical Drive Creation Summary Disk Array Operational Status Physical Drive Status Making Disk Array Settings 159 160 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 165 Logical Drive Status Viewing Information for All Logical Drives Locating a Logical Drive Logical Drive Synchronization Viewing Logical Drive Statistics Initialization Viewing the Logical Drive Check Table Running Redundancy Check 171 Viewing a List of Spare Drives 173 Deleting Spare Drive Making Spare Drive Settings Running Spare Check Viewing a List of All Logical Drives Working with the Logical Drive Summary Viewing Individual Logical Drive Information 178 Navigate to the C\Program Files\WebPAMPRO\Agent\bin folder Opening the CLI on Windows Go to the /opt/Promise/WebPAMPRO/Agent/bin directory Opening the CLI on Linux, FreeBSD, and VMware Command Action Table of Supported Commands View redundancy check status and progress This can be used in place of the help command or Usage List of Supported CommandsAbout Array Transport Options ID= Decimal places. If not specified, all available capacity is Examples Battery Bga Bbm Spare in the following condition Buzz Checktable Config 193 Ctrl Maximum amount of usable space Command from host is supported Enclosure Date Event Export Factorydefaults Init Logdrv Migrate Displayed Pdm Phydrv Option. Defaults to be all if -d is not specified Medium error threshold. If the threshold is reached, Ptiflash Port number Rc -a start -l3 -n -p rc -a start -l3 Rc -a stop -l2 Spare Spath HBA Stats Subsys Sync Transit Topology Specifies the id of disk array which contains the revertible 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 4,4,4 231 Advantages Disadvantages Choosing a RAID Level RAID 1E 234 High Read data transaction rate Choosing Sector Size Choosing Stripe Block Size TB Limitation Choosing Cache PolicyLogical Drive Size Sector Size Read Cache Policy Capacity CoercionWrite 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 Predictive Data Migration PDM Media PatrolPDM Triggers Drive Failure and Automatic Rebuild Transition 250 Manual Transition Automatic Transition 252 Critical & Offline Logical Drives When a Physical Drive Fails 254 Without a Hot Spare Drive With a Hot Spare DriveRebuild Operation 256 Buzzer Problems Reported by SuperTrakLEDs Logical Drive Status Fault Activity Firmware StatusGlobal LED Display Direct LED Display Bios 260 Open WebPAM PRO Problems Reported in WebPAM PROWhat to Look For 262 Finding the Failed Drive in SuperBuild Physical Drive Management screen Finding the Failed Drive in WebPAM PRO Salvaging Physical Drives Manual Rebuild SuperBuild Utility Rebuilding a Logical DriveSpare Drive Available No Spare Drive Available Manual Rebuild WebPAM PRO Cache Battery Does Not Charge Recovering from a Blank Screen Will Acpi work with HDDs on the SuperTrak EX Series? Frequently Asked QuestionsPre-Installation Speed, Device Types, Capacity, Cabling Can I use Atapi devices on the SuperTrak EX Series? How can I change the resources that the SuperTrak uses? Drive Issues Installation Issues Capacity, Booting Why can’t I run WebPAM PRO in Konqueror? Post-InstallationAren’t the WebPAM PRO icons supposed to be animated? Netherlands Technical Support ServicesContacting Technical Support United States Italy GermanyTaiwan China Disclaimer of other warranties Limited Warranty Your Responsibilities Returning the Product For Repair 279 280 Appendix a Partition and Format Click the Next button to start the Wizard Appendix a Partition and Format 284 Downloading Bios and Firmware File Updating SuperTrak Bios and Firmware Logging into WebPAM PRO Downloading the WebPAM PRO Update FileInstalling the WebPAM PRO Update File Updating WebPAM PRO Appendix C Battery Backup Unit Installing the BBU BBU module connectors on EX4650. Other models are similar 290 Appendix D LED Backplane Connections Schematic Diagrams Backplane Aggregate LED Display Direct LED DisplayStorage Device Status Global LED Display Numerics Index Start 27 Jbod 14 107 Status 92, 93 Stripe size 21, 93, 156 Logical drive 94, 95, 156 Delete 99, 174 information List 97 Buzzer 104 VTrak Jbod 14, 16, 147, 151, 167 Info 166, 167