Bull Escala EPC1200, Connecting Manual, Page: 13 / 224

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Introducing the Escala Powercluster Series
Chapter 1. Introducing the Escala Powercluster Series
Introducing the Powercluster family of Escala racks.
Introducing Powercluster Servers (Cluster Nodes)
The Powercluster offer is made up of Escala rack-mountable servers. Three uni-node
server models are available:
•
EPC400, an Escala RT Series rack with an Escala RT drawer, see page 2-1.
•
EPC800, an Escala RM Series rack with a CPU rack drawer, see page 3-1.
•
EPC1200, an RL470 Basic System which consists of two racks (a computing rack with a
CPU drawer and an expansion rack with an I/O drawer), see page 4-1.
Multiple Node Configurations
In addition, multiple node configurations can be defined from these models by adding
more nodes. For this purpose, three additional node types are offered:
– EPC400-N: an Escala RT drawer in an Escala RT rack (RT node)
– EPC800-N: an Escala RM drawer in an Escala RM rack (RM node)
– EPC1200-N: an RL470 Basic System which consists of two racks (a computing rack
with a CPU drawer and an expansion rack with an I/O drawer) (RL node).
These additional nodes are introduced on page 0.
Note: The RT nodes and RL nodes are often called PCI nodes. RM nodes are called MCA
nodes.
Mixed Configurations
Mixed configurations can be constructed. The permitted combinations are RM*RT, RM*RL,
and RT*RL. An original configuration with the three node types is not allowed. However any
node type can be added to an existing EPC.
EPC1200 Minimum Configuration
The EPC1200 model is available in any configuration (uni-node and above).
Additional Nodes/Racks
According to the configuration rules, an additional node comes with the associated rack(s),
if needed. If the configuration already contains a rack corresponding to the type of the
additional node, and if there is enough room left to insert that node into the rack, the order
of the additional node consists of the sole node drawer (Provided that the configuration
rules permit it). Otherwise a rack (RM rack, RT rack or RL bi–rack) of a type corresponding
to the node type (RM node, RT node or RL node) is also supplied.
Powercluster Models/Nodes/Racks
EPC400 EPC800 EPC1200
Nb of Racks 1 – 7 1 – 7 2 – 14
Nb of Nodes 1 – 8 1 – 8 2 – 8
Figure 1. Powercluster Models