Lenovo System x3850 X6 Installation And Service Manual page 49

On: A slot error has occurred.
• Slot power LEDs: The states of the power LEDs are as follows:
Off: Input power to the slot is not present.
On: Power to the slot is present. You cannot remove the I/O book from the server until the power LEDs
on all three slots are off.
Blinking: The slot is in the process of powering on or off. Do not remove the half-length I/O book from
the server.
• Power button: Press this button to power the I/O book PCIe slots off or on. The power LED for each slot
blinks until all of the power LEDs for the slots are on or off (not blinking)
For notes and information about what you need to consider when you install this I/O book and instructions on
how to install it in the server, see "Installing the half-length I/O book" on page 79.
Full-length I/O book
This information provides an overview of the full-length I/O book.
The full-length I/O book installs in the rear of the server. The server provides the ability to concurrently hot-
add or hot-remove PCIe adapters in the I/O book.
Notes:
• The ability to hot-add the full-length I/O book is dependent on the operating system. If the operating
system does not support hot-plug, the addition or removal of a full-length I/O book might cause an
unrecoverable system error.Attention:
– If the I/O bay is not populated with a full-length I/O book when the operation system boots or the
operating system is still running, a full-length I/O book cannot be hot-added to the I/O bay (due to
insufficient resources).
– If the I/O bay has a full-length I/O book installed when the operating system boots, you can hot-swap
the full-length I/O book.
• This I/O book supports both half-length, full-height and full-length, full-height PCIe Gen3 and Gen2
adapters.
• This I/O book has two PCIe auxiliary power connectors (one 6-pin for 75 watt extra power and one 8-pin
for 150W extra power.
• When you install a double-wide adapter in one of the x16 slots on this I/O book, the x8 slot is no longer
usable and the other x16 slot might not be usable due to limited power available for the I/O book.
The optional full-length I/O book provides three PCIe Gen3 and Gen2 slots for full-length and low-profile
adapters. This I/O book provides the following slots.
Note: The full-length I/O book adds a 3-inch mechanical extension to the base length dimension of the
server chassis to support full-length adapters.
• Three PCIe slots
– Two PCIe Gen3 x16 slots
– One PCIe Gen2 x8 (4, 1) slot
The following illustration shows the PCIe slots on the full-length I/O book board:
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Chapter 1 The Lenovo System x3850 X6 and x3950 X6 Type 6241 server
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