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22 BladeSymphony 1000 Architecture White Paper www.hitachi.com
• Intel VT Flex Migration — Intel hardware-assisted virtualization provides the ability to perform live
virtual machine migration to enable fail-over, load balancing, disaster recovery, and real-time server
maintenance.
• New features include Error Correcting Code (ECC) system bus, new memory mirroring, and I/O hot-
plug
Intel Xeon 5400 Quad Core Processors
The Quad-Core Intel Xeon 5400 Series is designed for mainstream, new business, and HPC servers,
delivering increased performance, energy efficiency, and the ability to run applications with a smaller
footprint. Built with 45 nm enhanced Intel Core microarchitecture, the Quad-Core Intel Xeon 5400
Series delivers 8-thread, 32- and 64-bit processing capabilities with 12 MB of L2 cache per processor,
providing more computing for threaded applications in a variety of deployments.
Intel's 45 nm uses 820 million transistors in the Intel Xeon processor 5400 series (Intel Xeon processor
5300 series has 582 million transistors). More transistors deliver more capability, performance, and
energy efficiency through expanded power management capabilities. Other enhancements are
designed to reduce virtualization overhead. And 47 new Intel Streaming SIMD Extensions 4 (SSE4)
instructions can help improve the performance of media and high-performance computing applications.
Other features include:
• Fully Buffered DIMM (FBDIMM) technology that increases memory speed to 800 MHz and
significantly improves data throughput
• Memory mirroring and sparing designed to predict a failing DIMM and copy the data to a spare
memory DIMM, increasing server availability and uptime
• Support for up to 128 GB memory
• Enhanced Intel SpeedStep technology allows the system to dynamically adjust processor voltage
and core frequency, which results in decreased power consumption and heat production
Memory System
The Intel Xeon Server Blade is equipped with eight FBDIMM slots supporting Registered DDR1
SDRAM. Supported capacity includes 512 MB, 1 GB, and 2 GB, DDR1-266 DIMMs. The memory
system is designed to control a set of two DIMMs for the memory device replacing function.
Accordingly, if DIMMs are added, they must be installed in two-DIMM units. The DIMMs in the same
bank must be of the same type. The DIMMs in different banks can be of different types.
FB-DIMM Advantages
Intel supports Fully Buffered DIMM (FBDIMM) technology in the Intel Xeon 5200 dual-core and 5400
quad-core processor series. FBDIMM memory provides increased bandwidth and capacity for the Intel
Xeon Server Blade. It increases system bandwidth up to 21 GB/sec. (with DDR2-667 FBD memory).
FBDIMM technology offers better RAS by extending the currently available ECC to include protection
for commands and address data. Additionally, FBDIMM technology automatically retries when an error
is detected, allowing for uninterrupted operation in case of transient errors.