Hitachi USP V - Device Files and Wwns

2-16 Installing the USP V
Hitachi Universal Storage Platform V/VM Configuration Guide for SGI
®
IRIX
®
Host Attachment
Device Files and WWNs
The SGI IRIX system creates device files for new devices automatically during
server startup. For LUN 0, the device name may not specify the LU number.
The rdsk devices use a raw interface, while the dsk devices use a block
interface. The port# and nodename indicate the worldwide name (WWN) and
device port numbers (fibre-channel disks have two ports). The vh and vol
devices are only in the rdsk directory and are normally used only for ioctl and
raw access. The format for device file names in SGI IRIX is:
• FC-AL (and parallel SCSI)
/dev/rdsk/dkscontroller#ddrive#{spartition#|vh|vol}
/dev/rdsk/dkscontroller#ddrive#llun#{spartition#|vh|vol}
/dev/dsk/dkscontroller#ddrive#spartition#
/dev/dsk/dkscontroller#ddrive#llun#spartition#
Example: /dev/rdsk/dks8d0l8s0
• Fibre-channel fabric
/dev/rdsk/nodename/lunlun#{spartition#|vh|vol}/ccontroller#pport#
/dev/dsk/nodename/lunlun#spartition#/ccontroller#pport#
Example: /dev/rdsk/50000e10ff809999/lun1vol/c8p50000e10ff80
9999
Note: When the Brocade SilkWorm
®
2800 fabric switch is used, the WWN
information is displayed by the nsShow command (see
Figure 2-5). The
PortName (column 4) is the WWN and the NodeName is the device port
number.
switch:admin> nsShow
The Local Name Server has 7 entries {
Type Pid COS PortName NodeName TTL(sec)
*N 011200; 2,3;10:00:00:60:69:00:ab:ba;10:00:00:60:69:00:ab:ba; 60
FC4s: FCIP
N 021200; 2,3;10:00:00:60:69:00:03:19;30:00:00:60:69:00:03:19; na
FC4s: FCIP
N 021300; 3;10:00:00:60:69:00:02:d6;20:00:00:60:69:00:02:d6; na
NL 0214e2; 3;21:00:00:fa:ce:00:21:1e;20:00:00:fa:ce:00:21:1e; na
FC4s: FCP [STOREX RS2999FCPH3 MT09]
NL 0214e4; 3;21:00:00:fa:ce:00:21:e1;20:00:00:fa:ce:00:21:e1; na
FC4s: FCP [STOREX RS2999FCPH3 CD09]
NL 0214e8; 3;21:00:00:fa:ce:04:83:c9;20:00:00:fa:ce:04:83:c9; na
FC4s: FCP [STOREX RS2999FCPH3 NS09]
NL 0214ef; 3;21:00:00:ad:bc:04:6f:70;20:00:00:ad:bc:04:6f:70; na
FC4s: FCP [STOREX RS2999FCPH3 JB09]
}
Figure 2-5 Displaying the WWN (NodeName) on Brocade Fabric Switch