Memory Subsystem - HP ML530 - ProLiant - 128 MB RAM Brief Manual

ProLiant ML530 High-Performance Technologies
memory
subsystem
1 For more information, see Compaq Advanced Memory Protection Technologies, document number TC020607TB available
online at ftp://ftp.compaq.com/pub/supportinformation/papers/tc020607tb_rev0_us.pdf.
The memory subsystem of the ProLiant ML530 G2 server is designed for high
performance using PC1600 DDR SDRAM, which has an effective data rate of 1.6 GB/s.
Combined with two-way interleaving (described below), the memory subsystem provides
the bandwidth necessary to keep up with the 3.2-GB/s data transfer rate to and from the
processor (Figure 7). This balanced configuration reduces latency of data transfers
between memory and processors, further enhancing system performance.
The ProLiant ML530 G2 server comes standard with a single memory board. The
memory board has eight Dual Inline Memory Modules (DIMM) sockets for a total
capacity of 16 GB, if 2-GB DIMMS are used in Standard Memory mode.
are organized into four banks (A, B, C, and D) with two sockets in each bank (Figure 7).
The memory board contains five Reliability-Enhanced Memory Controllers (REMCs). One
REMC is dedicated to addressing. It identifies the specific location of the data in
memory. The other four REMCs control the data transfers to and from the DIMMs. They
serve as the bridge between the DDR memory bus and the system bus.
figure 7. architecture of the ProLiant ML530 memory subsystem
1 The sockets
8