Sun Microsystems 440 Note

Chapter 3 Managing Disk Volumes 53

The Sun StorEdge Traffic Manager software integrates multiple path I/O

capabilities, automatic load balancing, and path failover functions into one package

for Sun servers connected to supported Sun StorEdge systems. Sun StorEdge Traffic

Manager can provide you with increased system performance and availability for

building mission-critical storage area networks (SANs).

The Sun StorEdge Traffic Manager architecture provides the following capabilities:

■Helps protect against I/O outages due to I/O controller failures. Should one I/O

controller fail, Sun StorEdge Traffic Manager automatically switches to an

alternate controller.

■Increases I/O performance by load balancing across multiple I/O channels.

Sun StorEdge T3, Sun StorEdge 3510, and Sun StorEdge A5x00 storage arrays are all

supported by Sun StorEdge Traffic Manager on a Netra 440 server. Supported I/O

controllers are single and dual fibre-channel network adapters, including the

following:

■PCI Single Fibre-Channel Host Adapter (Sun part number x6799A)

■PCI Dual Fibre-Channel Network Adapter (Sun part number x6727A)

■2GByte PCI Single Fibre-Channel Host Adapter (Sun part number x6767A)

■2GByte PCI Dual Fibre-Channel Network Adapter (Sun part number x6768A)

Note – Sun StorEdge Traffic Manager is not supported for boot disks containing the

root (/) file system. You can use hardware mirroring or VVM instead. See “To

Create a Hardware Disk Mirror” on page 57 and “Volume Management Software”

on page 52.

For More Information

Refer to the documentation supplied with the VERITAS Volume Manager and

Solaris Volume Manager software. For more information about Sun StorEdge Traffic

Manager, refer to your Solaris system administration documentation.

Contents

Main Page Contents Page Page Page Figures Page Tables Page Preface How This Book Is Organized Using UNIX Commands Shell Prompts Typographic Conventions Related Documentation AaBbCc123 Page Configuring the System Console Communicating With the System Page What the System Console Does Using the System Console Default System Console Connection Through the Serial Management and Network Management Ports Page Alternative System Console Configuration Accessing the System Console Through a Graphics Monitor Note About the sc> Prompt Note Access Through Multiple Controller Sessions Reaching the sc> Prompt OpenBoot ok Prompt Reaching the ok Prompt Graceful Shutdown ALOM System Controller break or console Command L1-A (Stop-A) Keys or Break Key Note Externally Initiated Reset (XIR) Caution Manual System Reset Caution Getting to the ok Prompt Caution To Get to the ok Prompt Switching Between the ALOM System Controller and the System Console Note Accessing the System Controller Using the Serial Management Port To Use the Serial Management Port Activating the Network Management Port Note To Activate the Network Management Port Accessing the System Console Through a Terminal Server To Access The System Console Through a Terminal Server Page Note Accessing the System Console Through a TIP Connection To Access the System Console Through the TIP Connection Note Modifying the /etc/remote File To Modify the /etc/remote File Note Accessing the System Console Through an Alphanumeric Terminal To Access the System Console Through an Alphanumeric Terminal Note Verifying Serial Port Settings on TTYB Note To Verify the Serial Port Settings on TTYB Accessing the System Console Through a Local Graphics Monitor To Access the System Console Through a Local Graphics Monitor Page System Console OpenBoot Configuration Variable Settings Page Managing RAS Features and System Firmware Note ALOM System Controller Note Logging In To the ALOM System Controller Note To Log In To the ALOM System Controller About the scadm Utility Note To View Environmental Information Note Controlling the Locator LED Note OpenBoot Emergency Procedures OpenBoot Emergency Procedures for Systems With Non-USB Keyboards OpenBoot Emergency Procedures for Systems With USB Keyboards Stop-A Functionality Stop-N Functionality To Restore OpenBoot Configuration Defaults Stop-F Functionality Automatic System Recovery Note Auto-Boot Options Note Error Handling Summary Note Reset Scenarios Automatic System Recovery User Commands Enabling and Disabling Automatic System Recovery To Enable Automatic System Recovery Note To Disable Automatic System Recovery Note Obtaining Automatic System Recovery Information Unconfiguring and Reconfiguring Devices To Unconfigure a Device Manually Page Note To Reconfigure a Device Manually Note Enabling the Hardware Watchdog Mechanism and Its Options To Enable the Hardware Watchdog Mechanism Multipathing Software Managing Disk Volumes Disk Volumes Volume Management Software VERITAS Dynamic Multipathing Sun StorEdge Traffic Manager Note RAID Technology Disk Concatenation RAID 0: Disk Striping RAID 1: Disk Mirroring RAID 5: Disk Striping With Parity Hot-Spares Hardware Disk Mirroring Caution Physical Disk Slot Numbers, Physical Device Names, and Logical Device Names To Create a Hardware Disk Mirror Page To Delete a Hardware Disk Mirror Page To Perform a Mirrored Disk Hot-Plug Operation Caution Note To Perform a Non-Mirrored Disk Hot-Swap Operation Page Page Page Note that c1t3d0 is now listed as configured. OpenBoot Configuration Variables Page Page Page Alarm Relay Output Application Programming Interface Page Page Page Page Page Index SYMBOLS A B C D E F G H L M N O P R S T U V X