Working With Scalable Partitions - Lenovo Flex System x280 X6 Compute Node Installation And Service Manual

Working with scalable partitions

This topic provides information about connecting multiple compute nodes together
to create scalable partitions.
A multi-node complex supports the following implementation modes:
v Single partition: The configuration functions as a single compute node that
v Multiple partitions: The computes nodes are configured to form multiple
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Flex System x280 X6, x480 X6, and x880 X6 Compute Node Types 7903 and 4259: Installation and Service Guide
Switch number Description
SW8111-2 IMMv2 Reset
SW8111-3 ME Flash descriptor
security override
SW8111-4 Boot Backup ME
SW8111-5, Selecting dongle serial
SW8111-6 port MUX (U9812)
SW8111-7, Selecting dongle serial
SW8111-8 port MUX (U9811)
contains up to eight microprocessors and 192 DIMMs. When the configuration is
implemented as a single-hardware partition, the lowest node bay ID in the
chassis is the primary node. The single partition uses the operating system of the
primary compute node.
The other nodes are the secondary nodes. The secondary nodes use the UEFI
settings defined for the primary node through the IMM. Each secondary
compute node retains its own UEFI settings for later use in stand-alone mode or
as a primary node.
Note: If you purchased a multi-node complex and you received each compute
node packaged individually, each compute node has a label on the top of the
bezel identifying the primary node and the secondary nodes as defined at the
factory during testing. Install the nodes in the chassis in the order indicated on
the label.
You can configure one, two, or four compute nodes into a single partition.
partitions within a multi-node complex.
– Two partitions each containing one compute node
– Two partitions each containing two compute nodes
– One partition containing four compute nodes
Switch setting Definition
The default position is Changing this switch
off. to the on position
forces the compute
node to reset the IMM.
The default position is Changing this switch
off. to the on position
forces the compute
node to override
security in the flash
descriptor.
The default position is Changing this switch
off. to the on position
forces the compute
node to boot from the
backup ME.
on, on LOM TX/RX
off, on RTMM TX/RX
on, off IMM TX/RX
off, off SIO TX/RX
on, on SAS TX/RX
off, on FPGA TX/RX
on, off IMM TX/RX
off, off SIO RTS/CTS