Product manual
Table Of Contents
- VTrak Product Manual
- Contents
- Chapter 1: Introduction to VTrak
- Chapter 2: VTrak Installation
- Unpacking the VTrak
- Mounting VTrak in a Rack
- Installing Disk Drives
- Making Management and Data Connections
- Setting Up Serial Cable Connections
- Connecting the Power
- Chapter 3: VTrak Setup
- Chapter 4: Management with WebPAM PROe
- Logging into WebPAM PROe
- Choosing a Language
- Perusing the Interface
- Logging out of WebPAM PROe
- Working with the Storage Network
- Working with Subsystems
- Viewing Subsystem Information
- Saving a System Service Report
- Setting an Alias for the Subsystem
- Setting Redundancy for the Subsystem
- Setting Cache Mirroring for the Subsystem
- Setting Subsystem Date and Time
- Making NTP Settings
- Synchronizing with a NTP Server
- Viewing the Runtime Event Log
- Saving the Runtime Event Log
- Clearing the Runtime Event Log
- Viewing NVRAM Events
- Saving NVRAM Events
- Clearing NVRAM Events
- Viewing Current Background Activities
- Making Background Activity Settings
- Running Background Activities
- Running Media Patrol
- Running PDM
- Viewing Scheduled Activities
- Scheduling an Activity
- Deleting a Scheduled Activity
- Viewing Lock Status
- Setting the Lock
- Renewing the Lock
- Releasing the Lock
- Managing Users
- Managing the Network Connection
- Managing Fibre Channel Connections
- Managing SAS Connections
- Managing Storage Services
- Monitoring Performance
- Managing Software Services
- Exporting the User Database
- Exporting a Configuration Script
- Importing a User Database
- Importing a Configuration Script
- Updating the Firmware
- Viewing Flash Image Information
- Restoring Factory Defaults
- Clearing Statistics
- Saving a System Service Report
- Shutting Down the Subsystem
- Starting Up After Shutdown
- Restarting the Subsystem
- Managing Controllers
- Managing Enclosures
- Managing Physical Drives
- Managing UPS Units
- Managing Disk Arrays
- Viewing a List of Disk Arrays
- Creating a Disk Array
- Creating a Disk Array - Automatic
- Creating a Disk Array - Express
- Creating a Disk Array - Advanced
- Deleting a Disk Array
- Viewing Disk Array Information
- Making Disk Array Settings
- Creating a Logical Drive
- Deleting a Logical Drive
- Migrating a Disk Array
- Rebuilding a Disk Array
- Running Media Patrol on a Disk Array
- Running PDM on a Disk Array
- Transitioning a Disk Array
- Preparing a Disk Array for Transport
- Managing Logical Drives
- Managing Spare Drives
- Working with the Logical Drive Summary
- Chapter 5: Management with the CLU
- Initial Connection
- Running Quick Setup
- Managing the Subsystem
- Managing the Controllers
- Managing the Enclosure
- Viewing the Enclosures Summary
- Viewing Enclosure Information
- Making Enclosure Settings
- Viewing FRU VPD Information
- Viewing Power Supply Status
- Locating a Power Supply
- Viewing Cooling Unit Status
- Viewing Temperature Sensor Status
- Viewing Voltage Sensor Status
- Checking the Batteries
- Reconditioning a Battery
- Locating an Enclosure
- Viewing Enclosure Topology
- Managing Physical Drives
- Managing Disk Arrays
- Viewing a List of Disk Arrays
- Creating a Disk Array
- Creating a Disk Array - Automatic
- Creating a Disk Array - Express
- Creating a Disk Array - Advanced
- Deleting a Disk Array
- Viewing Disk Array Information
- Setting an Alias for a Disk Array
- Accepting an Incomplete Array
- Enabling Media Patrol and PDM on a Disk Array
- Preparing the Disk Array for Transport
- Rebuilding a Disk Array
- Migrating a Disk Array
- Running PDM
- Running Transition on a Disk Array
- Locating a Disk Array
- Creating a Logical Drive
- Deleting a Logical Drive
- Managing Spare Drives
- Managing Logical Drives
- Managing the Network Connection
- Managing Fibre Channel Connections
- Managing SAS Connections
- Managing Background Activity
- Working with the Event Viewer
- Working with LUN Mapping
- Managing UPS Units
- Managing Users
- Working with Software Management
- Flashing through TFTP
- Viewing Flash Image Information
- Clearing Statistics
- Restoring Factory Defaults
- Shutting Down the Subsystem
- Starting Up After Shutdown
- Restarting the Subsystem
- Making Buzzer Settings
- Chapter 6: Maintenance
- Updating the Firmware in WebPAM PROe
- Updating the Firmware in the CLU
- Downloading the Firmware Image File
- Updating the Firmware
- Restarting - Single RAID Subsystem, Telnet
- Restarting - RAID with JBOD Expansion, Telnet
- Restarting - Single RAID Subsystem, SSH
- Restarting - RAID with JBOD Expansion, SSH
- Restarting - Single RAID Subsystem, Serial
- Restarting - RAID with JBOD Expansion, Serial
- Replacing a Power Supply
- Replacing a Cooling Unit Fan or Blower
- Replacing a Cache Battery
- Replacing a RAID Controller - Dual Controllers
- Replacing a RAID Controller - Single Controller
- Chapter 7: Technology Background
- Chapter 8: Troubleshooting
- VTrak is Beeping
- LEDs Display Amber or Red
- CLU Reports a Problem
- WebPAM PROe Reports a Problem
- Event Notification Response
- Critical & Offline Disk Arrays
- Incomplete Array
- Physical Drive Problems
- Enclosure Problems
- Controller Enters Maintenance Mode
- Connection Problems
- Browser Does Not Connect to WebPAM PROe
- Unsaved Data in the Controller Cache
- Chapter 9: Support
- Appendix A: Useful Information
- Appendix B: Multipathing on Windows
- Before You Begin
- Installing PerfectPath
- Verifying Installation
- Running Perfect Path View
- Monitoring Your LUNs and Paths
- Features and Settings
- Troubleshooting
- Updating PerfectPath
- Repairing PerfectPath
- Removing PerfectPath
- Appendix C: Multipathing on Linux
- Index
Chapter 7: Technology Background
291
• Set Redundancy Type to Active-Active.
See “Setting Redundancy for the Subsystem” on page 64 or page 172
• Enable Cache Mirroring under subsystem settings.
See “Setting Redundancy for the Subsystem” on page 64 or page 172
• On subsystems with two controllers, when Cache Mirroring is disabled, LUN
Affinity is enabled automatically. See “LUN Affinity” on page 291
Failover and Failback
When one controller fails, the surviving controller takes over logical drive access
until the failed controller is brought back online or is replaced. For example,
Cache Mirroring is enabled and your logical drives are assigned to Controller 1.
The following actions will happen:
• If Controller 1 goes offline, Controller 2 takes over access to the logical
drives assigned to Controller 1.
• All write data that is still in the controller cache will be written to the logical
drives, even though the controller managing them has failed.
• If Controller 1 comes back online, Controller 1 takes back access to the
logical drives assigned to it.
• If Controller 1 is replaced, the new controller takes over access to the logical
drives assigned to Controller 1.
LUN Affinity
VTrak subsystems with two controllers include a LUN Affinity feature. Normally,
either controller can access all logical drives. LUN Affinity enables you to specify
which controller can access each logical drive. Use this feature to balance the
load of your logical drives between the two controllers.
To use LUN Affinity you must:
• Have two controllers in the subsystem
• Enable LUN Affinity under controller settings. See page 122 or page 177
On subsystems with two controllers, when Cache Mirroring is disabled, LUN
Affinity is enabled automatically. See “Cache Mirroring” on page 290.
Disk Array Creation
When you create a logical drive using the Advanced method of disk array
creation, you can specify the Preferred Controller ID:
• Controller 1 – Assign all logical drives to Controller 1
• Controller 2 – Assign all logical drives to Controller 2
• Automatic – Alternate logical drive assignments between Controllers 1 and 2