Installation Guide, Third Edition - Server Expansion Unit

Chapter 3

Installing Accessories

Installing Additional Components

Step 3. Open the manual retention latch (MRL). See Figure 3-2 for details.

Figure 3-2 Manual Retention Latch Detail

Step 4. Remove the PCI bulkhead filler panel.

Step 5. Position and seat the PCI card in the slot.

NOTE A slow, firm pressure is needed to properly seat the card into the connection.

Step 6. Rotate the MRL to the closed position.

NOTE The Server Expansion Unit implements manual retention latch (MRL) hardware for

use in online add or replacement (OLAR) operations. If an MRL is left open while the

server is booting, HP-UX can incorrectly cache PCI slot power status causing OLAR

operations to fail. To prevent this situation, ensure all the MRLs are closed before

booting the server.

If OLAR reports that a slot is present and powered off, but no OLAR operations to

turn power on to that slot have succeeded even after the MRL is closed, the MRL

may have been left open during boot. To clear this condition, close the MRL for the

PCI slot then power off the PCI slot using the rad -o command. This will allow

future OLAR operations to succeed on this PCI slot.

Step 7. Replace the top cover.

Step 8. Connect all cables to the installed PCI card.

MRL Closed

MRL Open