Fujitsu P3AM-3842-05ENZ0 manual Connection Notes, Scsi Devices and Linux

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Chapter 3 Notes

Note the following issues when performing the relevant operation.

3.1Connection Notes

3.1.1SCSI Devices and Linux

The ETERNUS DX Disk storage systems represented to the server as set of Fibre Channel con- nected SCSI disks. The server then handles the ETERNUS DX Disk storage systems’ disks as LUN (logical units). Under Linux, SCSI disk devices have the following definitions in "/dev":

Device (LUN)	Partition
sda	sda1, sda2,. . . . sda15
sdb	sdb1, sdb2,. . . . sdb15
:
sdz	sdzl, sdz2,. . . . sdz15
sdaa-sdaz	sdaa1, sdaa2,. . . . sdaz15
sdba-sdbz	sdba1, sdba2,. . . . sdbz15
sdca-sdcz	sdca1, sdca2,. . . . sdcz15
sdda-sddx	sdda1, sdda2,. . . . sddx15
:
sdia-sdiv	sdia1, sdia2,. . . . sdiv15

3.1.2udev Function Notes

For RHEL-AS4 Update 4 or RHEL-ES4 Update 4 or later, note the following if using the udev function's by-id names to access disks:

•ETERNUS DX Disk storage systems' setting

[Inquiry VPD ID Type] must be set to [Type1 + Type3 (Default)] in the Web GUI or ETERNUSmgr [Set Host Response] window.

P3AM-3842-05ENZ0 ETERNUS DX Disk storage systems Server Connection Guide (Fibre Channel) for Linux

21	Copyright 2010 FUJITSU LIMITED

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Contents Page Page Preface Contents and Structure of this Manual Safe Use of this Product AcknowledgmentsNaming Conventions Sles Other names Contents Chapter Logical Unit Recognition Workflow When the Multipath Driver is not UsedWorkflow Set Up the Fibre Channel SwitchConnect the Server to the Eternus DX Disk Storage Systems Install the Fibre Channel Card DriverCreate a File System Set the Server to Recognize the Logical UnitsUsable Multipath Drivers When the Multipath Driver is UsedInstall and Set Up ETERNUSmgr For Veritas Volume Setting Up and Checking the Multipath Driver Install Eternus Multipath Driver or GR Mapper multipath Install Veritas Volume Set up the deviceServer Hardware Checking the Server EnvironmentServer OS Fibre Channel CardsEternus Multipath Driver or GR Multipath Driver Veritas Volume Manager VxVMDevice-mapper multipath Veritas Cluster ServerScsi Devices and Linux Connection NotesFibre Channel Switch Notes Server Startup and Power Supply Control NotesFibre Channel Card Notes Design Sheet Notes Veritas Volume Manager VxVM NotesVeritas Cluster Server VCS Notes Installing and Setting Up ETERNUSmgr Setting Up the Eternus DX Disk Storage Systems Setting the Fibre Channel Switches Installing and Setting Up the Drivers Connecting the Server to the Eternus DX Disk Storage Systems Displaying the Recognized Logical Units Logical Unit RecognitionFujitsu For Suse Linux Enterprise Server Setting Up and Checking the Multipath Driver Setting Up the File System Procedure Obtain and apply the Change LUN State Utility Check the volume status