HP rp7420, Service Manual, Page: 102 / 127

IMPORTANT: Complete information regarding OL* for I/O cards is on the HP website at
http://docs.hp.com
. Refer to the Interface Card OL* Support Guide for details. It is strongly
recommended that you obtain a copy of this guide and refer to it before beginning the removal
and replacement of PCI cards.
Figure 6-21 PCI Card Location
Removing the PCI Card
This procedure describes how to perform an online replacement of a PCI card using the attention
button for cards whose drivers support online add or replacement (OLAR). The attention button
is also referred to as the doorbell.
NOTE:
HP 9000 rp7420 servers implement 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 enables future OLAR operations to succeed on this PCI slot.
Prerequisites for this procedure are as follows:
• The card being replaced uses the same drivers and is the same type as the card being replaced.
• The green power LED is steady On.
• The yellow attention LED if steady Off or is blinking if a user has requested the slot location.
• To determine the status of all the PCI I/O slots, run the
olrad -q
command.
CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
To remove a PCI card, follow these steps:
1.
Remove the top cover. See “Removing the Top Cover” (page 86) .
102 Removing and Replacing Server Components