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

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

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