RAID 50 Striped Distributed Parity | Promise Technology EX8658

SuperTrak EX Series User Manual

RAID 50 – Striped Distributed Parity

RAID 50 combines both RAID 5 and RAID 0 features. Data is striped across physical drives as in RAID 0, and it uses distributed parity as in RAID 5. RAID 50 provides data reliability, good overall performance, and supports larger volume sizes.

Figure 7. RAID 50 is a combination of RAID 5 and RAID 0

Data Stripe

Distributed Parity

Axle 1

Axle 2

Physical Drives

The data capacity RAID 50 logical drive equals the capacity of the smallest physical drive times the number of physical drives, minus two.

RAID 50 also provides very high reliability because data is still available even if multiple physical drives fail (one in each axle). The greater the number of axles, the greater the number of physical drives that can fail without the RAID 50 logical drive going offline.

Component	Minimum	Maximum

Number of Axles	2	16

Physical Drives per Axle	3	16

Physical Drives per Logical Drive	6	256

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Image 240

Promise Technology EX8658, EX8654, EX8650, EX4650 manual RAID 50 Striped Distributed Parity, Component Minimum Maximum

Contents

Supertrak Copyright TrademarksImportant data protection information Recommendations Radio Frequency Interference Statement Page Contents Installing Drivers Installing Drivers, SuperBuild Utility SuperBuild Utility, 107Management with WebPAM PRO Managing Software Services, Management with WebPAM PRO, Management with WebPAM PRO, Management with WebPAM PRO, Troubleshooting Technology Background, Appendix a Partition and Format Appendix B Upgrades Support287 Appendix D LED Backplane Connections Xiv Introduction About This Manual Product Overview XOR MicroprocessorHot-Swapping WebPAM PRO Management Software Operating System Support Key Features and Benefits Features BenefitsBrowser Support Advanced Hardware Design Advanced Hardware Design Features Benefits Compatibility Features Benefits Specifications Compatibility Installation Unpacking the SuperTrak CardPage Installing the SuperTrak Card SuperTrak EX4650 card SuperTrak EX8654 card SAS Ports Ch1-4 SuperTrak EX16650 card + R G + + - + Connecting SuperTrak to a SuperSwap Enclosure Connecting SuperTrak to a VTrak Jbod Enclosure SAS Connections and ID Numbers Scenario 1 Virtual Enclosure SgpioScenario 2 Virtual Enclosure Host PC SuperTrak SAS Port Enclosure ID Range Drive ID Range Scenario 3 External Enclosures Daisy Chain Scenario 4 External Enclosures ParallelScenario 5 SAS Expanders Choosing the Physical Drives Level Number of Drives Creating a Logical Drive Installation Page Installation Page Installing the CLI Installing onto Windows 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 Installing the CLI onto FreeBSD Sh CLIInstaller...FreeBSD.bin -i silent Installing the CLI onto VMware Sh CLIInstaller...VMware.bin -i silent Installing WebPAM PRO Utility ServerAgent Operating System Support Internet Browser Browser Support 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 Installing WebPAM PRO onto Linux WebPAMPRO...Linux.bin file, then press Enter 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 Logging into WebPAM PRO Logging in at the Host PCLogging in over the Network Regular Connection Login Screen Https//192.168.10.2288443/promise Setting up WebPAM PRO Click the Add Subsystem/Host tab Add Subsystem/Host tab Installing Drivers Driver Installation Media WindowsClick the Driver for Windows button Linux and FreeBSD Tar zxvf RH-306010003.tar.gz New OS Installation Windows ServerLoad Driver Confirming Driver Installation Existing SystemChoose the Don’t search online option Windows Vista Existing System Windows Server Existing System Windows XP Existing System Type sh ./install Red Hat Linux Enterprise 4.4Type mount -r /dev/fd0 /mnt/floppy Type cd /mnt/floppy Fedora Core Fedora Core 7 Type sh ./install Type cd umount /media/floppy SuSE Open 10.2, 10.3, 10.5Type mount /dev/fd0 /media/floppy Type cd /media/floppy SuSE Sles 10, 10 SP1 Miracle Linux FreeBSD 6.1 Option 1. Device Node ExistsOption 2. Device Node Does Not Exist Existing System Esxcfg-boot -rg esxcfg-boot -b VMware ESX Server 3.0.2 Installing Drivers Page SuperTrak Bios SuperBuild Utility SuperTrak Bios screen SuperTrak Bios screen, logical drive offline Accessing the Main Menu SuperBuild Main Menu Selecting a Controller Viewing Controller Information Memory Type DDR2 Sdram Managing Physical Drives Viewing Physical DrivesViewing Physical Drive Information Managing Physical Drive Problems Managing Disk Arrays Viewing Disk ArraysViewing Disk Array Information Creating a Disk Array Changing Disk Array Settings Rebuilding a Disk ArrayDeleting a Disk Array Managing Logical Drives Viewing Logical DrivesViewing Logical Drive Information Creating a Logical Drive Initializing a Logical Drive Write Cache Policy Choose from Write Back or Write Through Changing Logical Drive Settings Deleting a Logical Drive Selected logical drive is removed from the list Managing Spare Drives Viewing Spare DrivesViewing Spare Drive Information Creating a Spare Drive Changing Spare Drive Settings Deleting a Spare Drive Viewing Background Activity Managing the Event Log Viewing RAM EventsViewing Nvram Events Clearing the Event Logs Setting the Time Zone Working with Time SyncSynchronizing Time with an Embedded Site Using the Miscellaneous Menu Making the SAS Ready LED SettingMaking the Sgpio Backplane Setting Working with the Buzzer Enabling or Disabling the Buzzer 106 Management with WebPAM PRO 108 Management with WebPAM PRO Accessing the Interface WebPAM PRO interface Using the Header Using Tree View Using Management View WebPAM PRO Tree View Choosing a Display Language Viewing the Event Frame Saving the Event Frame Deleting the Event FrameViewing the Storage Network Logging out of WebPAM PRO Storage Network appears in Tree View 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 119 Working with Subsystem/Host Management Viewing Subsystem/Host InformationAdding a Subsystem or Host In-Band versus Out-of-Band Deleting a Subsystem or Host Setting User Privilege Managing Software Services Viewing Service StatusChanging Web Server Settings Setting up Email Service Restarting the Tomcat ServerWindows Linux Setting up Extended Smtp Setting Event Frame Refresh TimeSending a Test Email Message Changing CIM Client Settings Changing CIM Server Settings Setting User Rights Managing the HostViewing Host Information Refreshing the WebPAM PRO Screen Managing the Subsystem Viewing Subsystem Information Setting an Alias for the Subsystem Clearing Statistical DataUpdating the Firmware Click the Clear Statistics link Checking Subsystem Health Viewing the Runtime Event LogSeverity Definitions Saving the Runtime Event Log Clearing the Runtime Event LogViewing the Nvram Event Log Saving the Nvram Event Log Clearing the Nvram Event Log Making Background Activity Settings Viewing Current Background Activities Running Background Activities Running Media Patrol Running PDM Viewing Scheduled ActivitiesScheduling an Activity 136 Viewing System Configuration Deleting a Scheduled Activity 138 Managing the Controller Viewing Controllers InformationViewing Controller Information 140 Making Controller Settings Viewing Controller Statistics Viewing Battery Information Clearing an Orphan Watermark Making Buzzer Settings Testing the BuzzerSilencing the Buzzer Viewing Buzzer Information Managing Enclosures Viewing Enclosure Information Viewing a List of Physical Drives Locating a Physical DriveVirtual 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 Locating a Disk Array 151 Creating a Disk Array Automatic Configuration Creating a Disk Array Express Configuration 154 Creating a Disk Array Advanced Configuration Disk Array CreationLogical Drive Creation Summary Disk Array Operational Status Making Disk Array Settings Physical Drive Status 159 160 Migrating a Disk Array Rebuilding Automatically Rebuilding Manually Running Media Patrol on a Disk Array Running PDM on a Disk Array Transitioning a Disk Array Preparing a Disk Array for Transport 165 Viewing Information for All Logical Drives Logical Drive Status Locating a Logical Drive Viewing Logical Drive Statistics Logical Drive Synchronization Initialization Running Redundancy Check Viewing the Logical Drive Check Table 171 Viewing a List of Spare Drives 173 Making Spare Drive Settings Deleting Spare Drive Running Spare Check Working with the Logical Drive Summary Viewing a List of All Logical Drives Viewing Individual Logical Drive Information 178 Opening the CLI on Windows Navigate to the C\Program Files\WebPAMPRO\Agent\bin folder Opening the CLI on Linux, FreeBSD, and VMware Go to the /opt/Promise/WebPAMPRO/Agent/bin directory Table of Supported Commands Command Action View redundancy check status and progress This can be used in place of the help command or List of Supported Commands AboutArray Usage Options Transport ID= Decimal places. If not specified, all available capacity is Battery Examples Bbm Bga Spare in the following condition Buzz Config Checktable 193 Ctrl Maximum amount of usable space Command from host is supported Date Enclosure 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 Stats HBA Subsys Sync Topology Transit Specifies the id of disk array which contains the revertible Technology Background Introduction to RAID RAID 0 Stripe RAID 0 Striping interleaves data across multiple drives RAID 1 Mirror RAID 1 Mirrors identical data to two drives RAID 1E Enhanced Mirror Enhanced Data Mirrors Physical Drives RAID 5 Block Striping with Distributed Parity RAID 5 stripes all drives with data and parity information RAID 6 Block and Double Parity Stripe RAID 6 stripes all drives with data and dual parity RAID 10 Mirror / Stripe Data Stripe Mirror Physical Drives RAID 50 Striped Distributed Parity Component Minimum Maximum RAID 50 Axles 3,3,3 RAID 60 Striping of Double Parity RAID 60 is a combination of RAID 6 and RAID RAID 60 Axles 5,5 10,10 4,4,4 231 Choosing a RAID Level Advantages Disadvantages RAID 1E 234 High Read data transaction rate Choosing Stripe Block Size Choosing Sector Size Choosing Cache Policy TB LimitationLogical Drive Size Sector Size Capacity Coercion Read Cache PolicyWrite Cache Policy Initialization Hot Spare Drives Partition and Format the Logical Drive RAID Level Migration Target Requirements None Add physical drives maximum RAID 10 must have less than 16 physical drives Physical drives maximum Ranges of Disk Array Expansion PDM Delete and Recreate Current LD Size Maximum LD Sector Size Expansion Size Media Patrol Predictive Data Migration PDMPDM Triggers Transition Drive Failure and Automatic Rebuild 250 Automatic Transition Manual Transition 252 When a Physical Drive Fails Critical & Offline Logical Drives 254 With a Hot Spare Drive Without a Hot Spare DriveRebuild Operation 256 Problems Reported by SuperTrak BuzzerLEDs Fault Activity Firmware Status Global LED DisplayDirect LED Display Logical Drive Status Bios 260 Problems Reported in WebPAM PRO Open WebPAM PROWhat to Look For 262 Finding the Failed Drive in SuperBuild Finding the Failed Drive in WebPAM PRO Physical Drive Management screen Salvaging Physical Drives Rebuilding a Logical Drive Spare Drive AvailableNo Spare Drive Available Manual Rebuild SuperBuild Utility Manual Rebuild WebPAM PRO Recovering from a Blank Screen Cache Battery Does Not Charge Frequently Asked Questions Pre-Installation Speed, Device Types, Capacity, CablingCan I use Atapi devices on the SuperTrak EX Series? Will Acpi work with HDDs on the SuperTrak EX Series? Drive Issues How can I change the resources that the SuperTrak uses? Installation Issues Capacity, Booting Post-Installation Why can’t I run WebPAM PRO in Konqueror?Aren’t the WebPAM PRO icons supposed to be animated? Technical Support Services Contacting Technical SupportUnited States Netherlands Germany ItalyTaiwan China Limited Warranty Disclaimer of other warranties 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 Updating SuperTrak Bios and Firmware Downloading Bios and Firmware File Downloading the WebPAM PRO Update File Installing the WebPAM PRO Update FileUpdating WebPAM PRO Logging into WebPAM PRO Appendix C Battery Backup Unit Installing the BBU BBU module connectors on EX4650. Other models are similar 290 Schematic Diagrams Appendix D LED Backplane Connections Backplane Direct LED Display Aggregate LED DisplayStorage Device Status Global LED Display Index Numerics 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