IBM SAN Volume Controller 2145-12F, Hardware Installation Manual

Page: 65 / 194

Figure 37. Hole locations in the front of the rack
• 1 Upper rail mounting bracket pin
• 2 Lower rail mounting bracket pin
• 3 Rack mounting screw hole
5. Ensure that the appropriate bracket pins are installed in the front and rear bracket of each rail.
Each rail comes with four medium pins preinstalled (two in the front bracket and two in the rear
bracket). Large and small pins are provided separately. Use the pins that are appropriate for the
mounting holes in your rack (see Table 10 on page 33).
Table 10. Selecting bracket pins for your rack
Mounting holes Bracket pins
Round,
unthreaded
Use the preinstalled medium pins.
Round, threaded Unscrew the medium pins and replace with the smaller pins that are supplied
with the rails.
Square Unscrew the medium pins and replace with the large pins that are supplied with
the rails.
6. At each end of the rail, grasp the tab 1 and pull firmly to open the hinge bracket (see Figure 38 on
page 34).
Chapter 3. Installing an optional 2U SAS expansion enclosure 33