1. Do not install four 2 GB double-rank DIMMs for the server maximum capacity (8 GB) configuration; the server does not support it.
2. You can install pairs of 256 MB, 512 MB, 1 GB, and 2 GB DIMMs in the server, but for the server maximum capacity you must use the DIMM-sequence in the table below.
3. You can install any combination of DIMM pairs in the server; however, you can install only two 2 GB double-rank DIMMs in the server, and they must go in DIMM connectors 1 and 2. Do not install 2 GB double-rank DIMMs in any connectors other than DIMM connectors 1 and 2.
4. If you order DIMMs from IBM, the variable 2R in the description for the memory indicates that the DIMM is a double-rank 2 GB DIMM.