Cray ClusterStor L300 - 16.4 Component Descriptions; 16.4.1 Embedded Application Controller (EAC)

● 2 ports on each LMN switch = 4 total
● 1 port on each LDN switch = 2 total
The additional optional MMU occupies the same position in the rack as the upper SMU component in the base
rack, immediately below the 4 Network switches.
The figure below illustrates how the additional optional MMU is cabled to the management and network switches.
This is an example only. Refer to the cabling tables in this publication for specific port assignments.
Figure 78. Cable AMMU Networks
1 2
3 4
2
1
3
1 2
3 4
2
1
3
A
B
11 2 2
1
1
3
4 5
2
2
11 2 2
1
1
3
4 5
2
2
AMMU
To local data
network (LDN)
To local management
network (LMN)
16.4 Component Descriptions
16.4.1
Embedded Application Controller (EAC)
ClusterStor L300 and L300N uses two distinct types of embedded application controllers (EACs): one type used
only for the system management unit (SMU) node, and another type is used for metadata management units
(MMUs) and scalable storage units (SSUs).
Reference
119