Internal system components
The following figure shows the layout of the CPUs and DIMMs inside the chassis. The
front of the system is at the top of the figure.
Figure 9 CPU and memory locations
DIMMs overview
Dual in-line memory modules (DIMM) come in various sizes, which must be configured
in a certain way. This topic can help you select the correct configuration when
servicing DIMMs.
The storage processor contains two Intel processors each with an integrated memory
controller that supports four channels of memory. The storage processor allows two
DIMM slots per channel, so the storage processor supports a total of 16 DIMM slots.
DD9300 memory DIMM configuration
Table 33
DD9300 memory DIMM configuration
Tier Total Memory Memory DIMM Configuration
DD9300 DLH Expanded 384 GB 8 x 32 GB + 8 x 16 GB
DD9300 DLH 192 GB 4 x 32 GB + 4 x 16 GB
DD9300 DLH Extended
Retention/DD Cloud Tier
384 GB 8 x 32 GB +8 x 16 GB
HA is supported with all available memory configurations.
To ensure maximum memory performance, there are memory DIMM population rules
for best memory loading and interleaving. Table 34 on page 36 and Table 35 on
page 37 specify the DIMM location rules for various memory configurations:
Table 34
Memory locations - CPU 0
Channel A Channel B Channel D Channel C
Tier Total
Memory
0 1 2 3 4 5 6 7
DD9300 DLH
Expanded
384 GB 32 GB 16 GB 32 GB 16 GB 16 GB 32 GB 16 GB 32 GB
Data Domain DD6300, DD6800, and DD9300 Hardware Overview
36 Data Domain DD6300, DD6800, and DD9300 Systems 6.1 Hardware Overview and Installation Guide
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