IBM 2109 Model M12, User Manual

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interface, direct memory access (DMA) engine, serial ports, I
²
C 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
100 MHz
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
failover. If one device stops functioning, the other device automatically takes its
place.
v
One 10 Mbps or 100 Mbps management connection (RJ-45 connector type)
v
Two universal asynchronous receiver-transmitter (UART) serial ports: one modem
port for remote diagnostic testing and one terminal port for Telnet and command
line interface (CLI) communication
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 I
²
C 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