Hitachi Comprehensive Guide to BMC Management and Control Functions

•Panel control

•Log information management within BladeSymphony 1000 (RC logs, SEL, SVP logs, etc.).

•SVP hot standby configuration control

•Server Conductor (server management software) interaction function. (Including a function for emulating the PCI-version SVP function.)

•HA monitor (cluster software) interaction function.

•Management interface (SVP console (Telnet/CLI, RS232C/CLI), SNMP)

•Assist function (E-mailing to the maintenance center)

BladeSymphony 1000 implements the functions of the SVP card through software emulation by BMC and SVP over fast Ethernet and I2C connections, as shown in Figure 29.

Blade Symphony

	Server		Server		Server
0		1		2
	BMC		BMC		BMC

Server	Server
3	4
BMC	BMC

Server	Server	Server
5	6	7
BMC	BMC	BMC

LAN SW

	SVP	LAN	LAN
Switch &
Management
Module

I/O	I/O
Module	Module

LAN SW

LAN		LAN
			SVP
	Switch &
	Management
	Module

Figure 29. Fast Ethernet and I2C connections in SVP management interface

Base Management Controller (BMC)

One instance of BMC is installed for each CPU module primarily to take charge of management within the physical partition (including a single CPU module). Only one instance of SVP is active throughout the system, managing the entire system in cooperation with BMC. SVP and BMC communicate with each other via a SVP build-in 100 BASE-TX LAN. In the case of the Intel Itanium Server Blade, a BMC on the primary CPU module operates as the representative of BMCs present in the partition. This BMC is referred to as the primary BMC.

42 BladeSymphony 1000 Architecture White Paper www.hitachi.com