RAID 10 Mirroring / Striping | Promise Technology 15110 manual

VTrak 15110 User Manual

RAID 10 – Mirroring / Striping

Mirroring/Striping combines both of the RAID 0 and RAID 1 disk array types. It can increase performance by reading and writing data in parallel while protecting data with duplication. At least four disk drives are needed for RAID 10 to be installed. With a four-disk-drive disk array, one drive pair is mirrored together then striped over a second drive pair.

Data Stripe

Data

Mirror

Disk Drives

Figure 5. RAID 10 takes a data mirror on one drive pair and stripes it over two drive pairs

The data capacity is similar to a RAID 1 disk array, with half of the total storage capacity dedicated for redundancy. An added plus for using RAID 10 is that, in many situations, such a disk array offers double fault tolerance. Double fault tolerance may allow your disk array to continue to operate depending on which two disk drives fail.

RAID 10 disk arrays on VTrak consist of 4 to 14 disk drives.

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Promise Technology 15110 user manual RAID 10 Mirroring / Striping

Contents

Vtrak Copyright TrademarksImportant data protection information Recommendations Contents VTrak Setup with the CLU Contents 133 Management with the CLU Maintenance Technology Background Support Introduction About This Manual Overview VTrak 15110 front view Feature Benefit Features and BenefitsArchitectural Description Allows you to manage the RAID subsystem Specifications RAID FCC Statement Installation Unpack the VTrak Mount VTrak 15110 in a Rack Rackmounted VTrak Install Disk Drives VTrak 15110 Disk Drive access Drive Carrier mounting holes Serial ATA Disk Drives Sata Disk Drives mount at the front of the carrier Parallel ATA Disk Drives Pata Disk Drives require a PATA-to-SATA adapter Drive Numbering VTrak disk drives are numbered left to right Verify the Scsi HBA Card Connect the Scsi Cables VTrak 15110 Scsi connections Scsi Terminator Pages Configuration 1 One VTrak, one Host PC, one Scsi HBA card Configuration 2 One VTrak, one Host PC, two Scsi HBA cards Host PC Scsi Configuration 5 Two VTraks, one Host PC, two Scsi HBA cards Management Port Connection Connect the Management CablesRS-232 Serial Connection Connect the Power Macintosh Users VTrak 15110 Displays Set-up Management Connections Terminal Emulation Set IP Addresses and Subnet Mask Snmp Page Set Up Telnet Connection Enable Telnet on VTrakWindows and Linux Mac OS Make a Telnet Connection HyperTerminal Windows or Minicom Linux Command Line Windows or Terminal Icon Linux Page Install WebPAM PRO Software Utility Server Installation LocationsInstallation Guidelines Operating System Support Cimom Agent WebPAM PRO on a network Install WebPAM PRO Internet BrowserBefore you start… Windows Solaris Installation Under All Supported Operating Systems Page Installation Page Installation Page VTrak Setup with WebPAM PRO Log-in to WebPAM PRORegular Connection Http//192.168.10.468080/promise Secure Connection Https//192.168.10.468443/promise Setup Access a Subsystem VTrak Add a Subsystem VTrak Setup Create a Disk Array Automatic Option Express OptionPage Advanced Option Page Setup Create a Logical Drive Assign a Scsi Target ID Internet Connection using WebPAM PRO Log-out of WebPAM PRO VTrak Setup with the CLU CLU Connection Create a Disk Array Automatically Create a Disk Array Manually Maxtor 5A250J0 RAID SBS CAP Mapping for Disk Array TIDs for Scsi channel 1 changed Press Enter key to return Exit the CLU VTrak Status Indicators Management with WebPAM PRO Drive Status Indicators State LEDs Audible Alarm LEDs State Http//192.168.1.468080/promise Log-in/Log-outHttps//192.168.1.468443/promise Management with WebPAM PRO WebPAM PRO Opening Screen Subsystem Management Subsystem User Rights Right Meaning Access a Subsystem VTrak Subsystem Management Window View Event Log Management with WebPAM PRO Delete a Subsystem User Management Add a User Event Notification Meaning Connection between Host PC and UltraTrak has Meaning 45C or discharge above 60C Delete a User Manage User Rights Right Meaning Change Password Setup Email Alert Notification Software Management Web Server Port number for secure connections is Firmware Update Tftp Server Refresh Time Restart Tomcat Service WindowsSecurity Events Management with WebPAM PRO Connection Status User Rights Lock Operations VTrak ManagementSubsystem Health MP/PDM Settings LUN Settings Scsi Management TID Settings Statistics Network ManagementEthernet Settings Service ManagementService Snmp Controllers TelnetController List Controller Controller Parameters Enclosures Enclosure List Enclosure FRU VPD Battery Buzzer Physical Drive List Enclosure Front View Physical Drive Physical Drive Information 109 Disk Array List Disk ArraysDisk Array Parameters 111 112 113 Advanced Option 115 Delete Disk Array Disk Array Information Disk Array Information Disk Array and Logical Drive Status Definitions Disk Array Settings Create Logical Drive Delete Logical Drive Background Activity Scheduler Logical Drive List Logical Drive Parameters Logical Drive Logical Drive Information Logical Drive LUN Settings Logical Drive Alias Spare DrivesPhysical Drives Spare Drive List Create a Spare Drive Delete a Spare Drive Logical Drive Summary 131 132 Management with the CLU 134 Management with the CLU Audible Alarm Alarm Settings CLU Connection Serial ConnectionTelnet Connection Telnet 192.168.1.56 There are nine functional groups in the CLU 139 How to use the CLU Please enter your menu choice4 141 CLU Function Map 143 144 LUN 146 147 View Controller Information Controller ManagementModify Controller Parameters Reboot VPD 150 Enclosure Management Fan Speed Temperature Voltage 153 Physical Drive Management Enable/Disable Write Cache View Parameters Wipe Out Boot Sector Wipe Out Reserve Sector Diagnostics Blink LED Physical Drives IO Statistics WDC WD1200JD Disk Array Management Disk Array Auto Creation Create New Disk Array WDC WD2000JB-00FUA0 Disk Array Properties Create Logical Drive Delete Logical Drive Cache Policy Enable/Disable Smart Retry CountDisk Array Name Priority Hot Spare Policy PDM PDM Auto Start Auto Rebuilding PDM Auto Start Disabled Enable PDM Auto starty/n?y 171 Name Logical Drive ManagementScsi Assignment Management Port Enable/Disable Telnet Change Password TimeoutChange User Name Reset to Default Settings Contact Person LocationRead only Community Trap Only Community PingTrap Sinks Number of ping packets1-30?5 Channel TID RAID Console LUN Maintenance Menu Disk Array Operations Rbld Maintenance Activity Monitor Migrate Disk Array Manual Rebuild Migrate Disk Array 1 nowy/n?y Manual PDM RAID3 Synchronize Logical Drive Redundancy Check Media Patrol Event Viewer Maintenance Firmware Update WebPAM PreparationTftp Server IP Address Tftp Server Directory Name Firmware Image File Firmware Update CLU Tftp Server 193 Firmware Update Serial Port Firmware Image File Scrub DDR, waiting Platform Init Done Replace Power Supply Replace Cooling Unit Fan Disconnect 199 200 201 Replace Cache Battery Detach Replace SEP Replace RAID Controller 206 Technology Background Introduction to RAID RAID 0 Striping RAID 0 Striping interleaves data across multiple drives RAID 1 Mirroring RAID 1 Mirrors identical data to two drives RAID 3 Block Striping with Dedicated Parity RAID 3 Stripes data and adds a dedicated Parity Drive RAID 5 Block Striping with Distributed Parity RAID 5 Stripes all drives with data and parity information RAID 10 Mirroring / Striping RAID 50 Striping of Distributed Parity RAID 50 Striping of Distributed Parity disk arrays Choosing a RAID Level Advantages Disadvantages 215 216 Gigabyte Boundary Choosing Stripe Block SizeInitialization Hot Spare Drives Partition and Format the Logical Drive Where to Make Settings Cache SettingsRAID Level Migration Add Lose From Increase Redundancy CapacityPerformance Ranges of Disk Array Expansion Current LD Size Maximum LD Sector Size Expansion Size CLU Reports a Problem VTrak is Beeping WebPAM PRO Reports a Problem Troubleshooting LEDs Display Amber or Red Front Panel Connection Dark Steady Flashing Amber Red Drive Status IndicatorsGreen Back of Enclosure Dark Green Amber Red Event Notification Response Event ActionController Notification Connection Notification Logical Drive Notification Disk NotificationLogical Drive Notification, 232 Enclosure Notification Critical & Offline Disk Arrays When a Disk Drive FailsRebuild With a Hot Spare Drive Enclosure ProblemsWithout a Hot Spare Drive 236 Overheating Power Supplies Battery Scsi Connections Connection ProblemsSerial Connections Network Connections Frequently Asked Questions What kind of disk drives can I use with VTrak?Can I use my existing Scsi card with VTrak? How many VTrak subsystems can I connect to one Scsi chain? How can I tell when the VTrak has fully booted? Can WebPAM PRO connect through VTrak’s Serial RS-232 port? Are disk arrays on VTrak limited to 2.199 terabytes? How can I be sure everything is working OK on the VTrak? Contacting Technical Support Technical Support ServicesNorth & South America Europe, Africa, Middle East Pacific Rim China Limited Warranty Disclaimer of other warranties Returning Product For Repair Your Responsibilities Or retailer Appendix a Serial Connector Pinout Pin Signal 252 Index FRU LED 24, 65, 133 RAID 0 208 RAID 1 209 241