184
Installing Blade Components
Non-Optimal Memory Configurations
System performance can be affected if your memory configuration does not
conform to the preceding installation guidelines. Your system may issue an
error message during start-up stating that your memory configuration is non-
optimal.
Memory Sparing Support – PowerEdge M905
Memory sparing (spare bank) is supported in systems that have one of the
memory configurations shown in Table 3-5. The memory sparing feature must
also be enabled in the
Memory Information
screen of the System Setup
program. See "Memory Settings Screen" on page 140. To use memory sparing,
you must disable node interleaving.
System Memory
–
PowerEdge M805
You can upgrade your system memory to a maximum of 128 GB by installing
667 MHz registered DDR2 memory modules in sets of 1 GB, 2 GB, 4 GB, or
8 GB memory modules. (Dual-rank 8 GB modules are supported; quad-rank
8 GB modules are not supported.) Each processor has four memory channels,
organized in sets of two channels.
NOTE:
If more than four memory modules are installed per processor, the memory
modules are downclocked to operate at 533 MHz.
Table 3-5. Memory Sparing Configurations
–
PowerEdge M905
NOTE:
Memory sparing is supported if 24 identical memory modules are installed.
Total
System
Memory
Usable
System
Memory
Memory Modules -
Number and Size
Memory Module Locations
48 GB
40 GB
Twenty-four 2 GB
A1, A2, A3, A4, A5, A6, A7, A8, B1, B2,
B3, B4, B5, B6, B7, B8, C1, C2, C3, C4,
D1, D2, D3, D4
96 GB
80 GB
Twenty-four 4 GB
192 GB
160 GB
Twenty-four 8 GB
Summary of Contents for PowerEdge M620
Page 1: ...Dell PowerEdge Modular Systems Hardware Owner s Manual ...
Page 60: ...60 About Your System Figure 1 24 Example of PowerEdge M610x Port Mapping of Blade 2 ...
Page 68: ...68 About Your System Figure 1 26 Example of Half Height Blade Port Mapping ...
Page 136: ...136 About Your System ...
Page 286: ...286 Installing Blade Components ...
Page 308: ...308 Installing Enclosure Components ...
Page 330: ...330 Running System Diagnostics ...
Page 360: ...360 System Board Information ...
Page 362: ...362 Getting Help ...
Page 368: ...Index 368 V video controller installing 273 ...