IBM totalstorage fastt100, Installation, User And Maintenance Manual, Page: 59 / 160

Fibre-channel loop and ID settings
When you install a hard disk drive in the storage server, the drive tray plugs into a
printed circuit board called the midplane . The midplane sets the fibre-channel loop
ID automatically, based on the server ID switch setting and the physical location
(bay) of the hard disk drive.
Server ID (Enclosure ID) settings
The FAStT100 comes with a server ID switch (also referred to as an enclosure ID
switch ) that is used to identify the FAStT100 on a fibre channel loop. The server ID
switch is located on the back of the unit, as shown in Figure 21 on page 30.
1 Gb/s 2 Gb/s
X10
X1
Tray Number
Conflict
2 Gb/s Enclosure Speed
LED (Green)
ID Conflict LED (Amber)
1 Gb/s 2 Gb/s
X10 X1
Tray Number
Conflict
f10ug046
Figure 20. Enclosure ID switches
Chapter 2. Installing the storage server
29