IBM 8685 Hardware Maintenance Manual - Page 94

Interleaving, Number of DIMMs, Install DIMMs in these connectors

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When you install DIMMs, install them in the order listed in Table 7. Table 7. DIMM installation order Interleaving Two-way Number of DIMMs 2 Install DIMMs in these connectors D2, D8 (standard) Two-way 4 D2, D8 (standard) (Hot Spare memory bank for two-way interleaving) Two-way D4, D10 6 D2, D8 (standard) (Hot Spare memory bank for two-way interleaving) D4, D10 Four-way Four-way D6, D12 4 D2, D8, D1, D7 8 D2, D8, D1, D7 (Hot Spare memory bank for four-way interleaving) Four-way D4, D10, D3, D9 12 D2, D8, D1, D7 (Hot Spare memory bank for four-way interleaving) D4, D10, D3, D9 D6, D12, D5, D11 Complete the following steps to install a DIMM. Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling these devices, see "Handling static-sensitive devices" on page 42. 1. Review the information in "Before you begin" on page 41 and "Safety information" on page 169. 2. Turn off the server and disconnect all power cords and external cables; then, remove the server cover (see "Removing the top cover and bezel" on page 51). 3. Remove the air baffle: a. Pull out the two plastic fasteners on the front of the air baffle. Note: Do not remove the fasteners from the air baffle. b. Grasp the handle on the air baffle; then, lift the air baffle from the server. 84 xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide

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When you install DIMMs, install them in the order listed in Table 7.
Table 7. DIMM installation order
Interleaving
Number of DIMMs
Install DIMMs in these connectors
Two-way
2
D2, D8 (standard)
Two-way
4
D2, D8 (standard) (Hot Spare memory
bank for two-way interleaving)
D4, D10
Two-way
6
D2, D8 (standard) (Hot Spare memory
bank for two-way interleaving)
D4, D10
D6, D12
Four-way
4
D2, D8, D1, D7
Four-way
8
D2, D8, D1, D7 (Hot Spare memory bank
for four-way interleaving)
D4, D10, D3, D9
Four-way
12
D2, D8, D1, D7 (Hot Spare memory bank
for four-way interleaving)
D4, D10, D3, D9
D6, D12, D5, D11
Complete the following steps to install a DIMM.
Attention:
When you handle static-sensitive devices, take precautions to avoid
damage from static electricity. For details about handling these devices, see
“Handling static-sensitive devices” on page 42.
1.
Review the information in “Before you begin” on page 41 and “Safety
information” on page 169.
2.
Turn off the server and disconnect all power cords and external cables; then,
remove the server cover (see “Removing the top cover and bezel” on
page 51).
3.
Remove the air baffle:
a.
Pull out the two plastic fasteners on the front of the air baffle.
Note:
Do not remove the fasteners from the air baffle.
b.
Grasp the handle on the air baffle; then, lift the air baffle from the server.
84
xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide