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SBA-7222G-T2 Blade Module User’s Manual
3-6
Figure 3-4. Installing the Onboard Battery
3-5 Memory Installation
The mainboard of each blade unit must be populated with DIMMs (Dual In-line Memory
Modules) to provide system memory. The DIMMs should all be of the same size and
speed and from the same manufacturer to avoid compatibility issues. See details
below on supported memory and our web site (www.supermicro.com/products/
superblade for recommended memory.
Populating Memory Slots
The mainboard of a SBA-7222G-T2 blade module has 8 memory slots per node. Both
interleaved and non-interleaved memory are supported, so you may populate any
number of DIMM slots.
Populating slots at the same time with memory modules of the same size and of the
same type will result in three-channel, interleaved memory, which is faster than
single-channel, non-interleaved memory. See Table 3-1 and Figure 3-5 for details.
For an interleaved configuration, memory modules of the same size and speed
must be installed. You should not mix DIMMs of different sizes and speeds.
Table 3-1. Populating Memory Slots per Node for Interleaved Operation
Number
of
DIMMs
CPU Channel 1 Channel 2 Channel3 Channel4
4 DIMMs
CPU1 P1-DIMM1 P1-DIMM2 --- ---
CPU2 P2-DIMM1 P2-DIMM2 --- ---
8 DIMMs
CPU1 P1-DIMM1 P1-DIMM2 P1-DIMM3 P1-DIMM4
CPU2 P2-DIMM1 P2-DIMM2 P2-DIMM3 P2-DIMM4
NOTE: The DIMM slot number specified in Table 3-1 equals the DIMM slot to
be populated. A “---” indicates that the DIMM slot should be left unpopulated.
DIMMs for one board are P1/P2 and P3/P4 for the other board.
NOTE: Though multiple DIMM memory module types and speeds may be
supported, you need to use DIMM memory modules of the same speed and
type.
Lithium Battery
Battery Holder