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Components on the Front of a Cell
4-2
Cells
A cell contains the physical resources of the system: instruction processors, memory,
input/output devices, peripheral storage devices, management board, fans, power
supplies, EXPRESSSCOPE® Monitor, and so on. Each system comprises one to four
cells.
Maintenance LAN (MLAN)
The maintenance LAN (MLAN) connects the internal components of the system.
Partition
A partition is a combination of one to four cells that runs a single instance of an
operating system or virtual machine monitor. The operating system can be Red Hat
Linux, SUSE Linux, or any supported Windows operating system. The virtual machine
monitor can be VMware ESX or Xen. You can purchase the operating system or virtual
machine monitor from NEC or supply it yourself.
A system comprises a minimum of one and a maximum of four partitions.
Service Processor
Each cell has an internal management board. For each partition, one of the partition’s
management boards serves as the Service Processor. (Other management boards in
the partition are called satellite management controllers.) A Service Processor manages
and maintains the partition, monitors the system for hardware problems, and allows you
to repartition the system.
The system’s management firmware resides on flash memory on the management
board and provides the Service Processor functionality. Using a Web browser, you
connect to the remote console interface to maintain, monitor, and repartition the system.
The management board also includes the BIOS and Console Manager firmware.
Network Components
Your network environment can include the following components.
Public LAN
The public LAN is the customer’s internal production network that connects the servers,
workstations, and so forth of an enterprise. It is sometimes referred to as the enterprise
LAN.