Fujitsu P3AM-3842-05ENZ0 用户手册

ETERNUS DX Disk storage systems Server Connection Guide (Fibre Channel) for Linux

P3AM-3842-05ENZ0

Chapter 9

Logical Unit Recognition

At boot up, Linux automatically recognizes all SCSI disks and assigns them successive device
names starting from "sda". When assigning the device names, any internal SCSI disks are
assigned first, followed by the assignment of the ETERNUS DX Disk storage systems' LUNs.
Example: If there is one internal SCSI disk, it is assigned a SCSI device name as follows:

9.1

Displaying the Recognized Logical Units

The driver version and information of each LUN's SCSI device name, etc. are displayed in the
console message when Linux is booted up. Although this console message disappears soon
from the screen, it can be re-displayed using the following command:

9.1.1

For Red Hat Enterprise Linux

SCSI device name

by-id name (Example)

Explanation

/dev/sda

/dev/disk/by-id/scsi-
36003005700ac3fc013746ef6315e42c4

Internal SCSI disk

/dev/sdb or later

/dev/disk/by-id/scsi-
3600000e00d0000000000042200000000
/dev/disk/by-id/scsi-
3600000e00d0000000000042200010000

ETERNUS DX Disk storage
systems' LUN