Configuration; Management - IBM 2109 Model M12 User Manual

interface, direct memory access (DMA) engine, serial ports, I²C interface, read-only
memory, and general purpose I/O. In addition, the CP blade assembly has the
following functions:
v SDRAM controller that is built into the PPC405 with error correction support at
v SDRAM that supports 128 Mb configuration
v Socket PLCC32 boot flash that supports 512 Kb
v On-board compact flash that supports 256 Mb of software storage
v Two 32-bit, 33 MHz PCI-PCI bridges nontransparent
v Hot-plugged interface circuitry to support reliability, availability, serviceability and
v One 10 Mbps or 100 Mbps management connection (RJ-45 connector type)
v Two universal asynchronous receiver-transmitter (UART) serial ports: one modem
v One amber LED to indicate the status for CP errors
v One green LED to indicate the proper operation for the CP power
v One green LED to indicate the system Ethernet 10 Mbps or 100 Mbps speed
v One amber LED to indicate the system Ethernet link status
v One digital thermometer for temperature sensing
v One real-time clock (RTC) with battery
v Two I²C I/O expander devices

Configuration

The CP blade assemblies can be configured to support a single 2-blade assembly
topology, dual 2-blade assembly topology, a 4-blade assembly topology, a dual
4-blade assembly topology, or an 8-blade assembly switch topology. Other
topologies can be supported on an as needed basis. Each CP interfaces to switch
blade assemblies using a standard Peripheral Component Interconnect (PCI) bus.
This bus runs at 33 MHz and can be 32 or 64 bits wide (bus 1 and 2). The CP
blade assembly supports the following switch configurations:
v Single 32-port switch with dual CPs
v Dual 32-port switches with dual CPs
v Single 64-port switch with dual CPs
v Dual 64-port switches with dual CPs

Management

The CPs manage as many as eight switch blade assemblies within a single switch
and monitor up to four power supplies, three blowers, three inlets (in the blower), up
to 12 outlet temperature monitors (one per blade assembly), and other blade
assembly-specific environmental features, such as voltages. The CP can individually
reset each blade assembly, detect the status of each blade assembly (installed/not
installed), manage the interrupt and service demand from each blade assembly,
control the ability of a blade assembly to drive or not drive the PCI bus, and
determine the error status of each blade assembly.
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IBM TotalStorage SAN Switch: 2109 Model M12 User's Guide
100 MHz
failover. If one device stops functioning, the other device automatically takes its
place.
port for remote diagnostic testing and one terminal port for Telnet and command
line interface (CLI) communication