Datasheet

Cisco UCS B420 M4 Blade Server
SUPPLEMENTAL MATERIAL
41
A quick reference for the recommended DIMM population order is shown in Table 26 and Table 27. CPU 1
DIMM population order is shown as an example. Pick the number of DIMMs in the table you wish to populate,
then, starting with A1, populate down Bank 1, then down Bank 2, then down Bank 3 until you reach the
number you picked. If you picked 8 DIMMs, for example, use
Table 26 and populate DIMMs in A1, B1, C1,
D1, A2, B2, C2, and D2. If you picked 6 DIMMs, for example, use Table 27 and populate DIMMs in A1, B1, C1,
A2, B2, and C2, leaving D1 and D2 empty.
8 A1, B1, C1, D1,
A2, B2, C2, D2
E1, F1, G1, H1,
E2, F2, G2, H2
I1, J1, K1, L1,
I2, J2, K2, L2
M1, N1, O1, P1,
M2, N2, O2, P2
9 A1, B1, C1,
A2, B2, C2,
A3, B3, C3
E1, F1, G1,
E2, F2, G2,
E3, F3, G3
I1, J1, K1,
I2, J2, K2,
I3, J3, K3
M1, N1, O1,
M2, N2, O2,
M3, N3, O3
10 Not recommended for performance reasons
11 Not recommended for performance reasons
12 A1, B1, C1, D1,
A2, B2, C2, D2,
A3, B3, C3, D3
E1, F1, G1, H1,
E2, F2, G2, H2,
E3, F3, G3, H3
I1, J1, K1, L1,
I2, J2, K2, L2,
I3, J3, K3, L3
M1, N1, O1, P1,
M2, N2, O2, P2,
M3, N3, O3, P3
Table 26 DIMM Population Quick Reference for CPU 1 (for 1, 2, 4, 7, 8, 10, 11, or 12 DIMMS)
CPU Channel Bank 1 Bank 2 Bank 3
A 1 5 9
B 2 6
10
1
Notes
1. Not recommended for performance reasons
C 3
7
1
11
1
D 4 8 12
Table 27 DIMM Population Quick Reference for CPU 1 (for 3, 5, 6, or 9 DIMMS)
CPU Channel Bank 1 Bank 2 Bank 3
A 1 4 7
B 2
5
1
Notes
1. Not recommended for performance reasons
8
C 3 6 9
D empty empty empty
Table 25 DIMM Population Order per CPU (continued)
DIMMs
per CPU
Populate
CPU 1 Slots
Populate
CPU 2 Slots
Populate
CPU 3 Slots
Populate
CPU 4 Slots