1. Oracle Exadata X9-2 Database Server Service Manual
  2. Servicing the DIMMs
  3. DIMM Population Rules

DIMM Population Rules

The Oracle Exadata X9-2 Database Server supports a fixed base configuration in processor 0 (P0) and processor 1 (P1). Do not attempt to install any other DIMM sizes or DIMM types in the server unless you are upgrading the memory with an Exadata memory expansion kit.

Each processor, P0 and P1, has sixteen DIMM slots organized into eight memory channels. Each memory channel contains two DIMM slots: a white DIMM slot (channel slot 0) and a black DIMM slot (channel slot 1).

The physical layout of the DIMMs and processor(s) is shown in the following figure (when viewing the server from the front), along with the general DIMM installation order. The installation order specific to your server configuration follows the figure.

Note:

In single processor systems, the DIMM slots associated with processor 1 (P1) are nonfunctional. Do not populate P1 slots with DIMMs in single processor systems.

Figure that shows the DIMM and processor layout along with the DIMM population rules
Call Out Description

1

DIMM slot numbers and their corresponding Fault LEDs

2

DIMM installation order (black slots populated first, followed by white slots):

  • Top row - For 16 DIMMs

  • Bottom row - For 12 DIMMs

Note: With dual processor systems, always start installing DIMMs in the P0 processor and then alternate between the processors. For example, start with the first DIMM slot in the P0 processor (DIMM slot 0), and then move to the first DIMM slot in the P1 processor (DIMM slot 0). Continue with the second DIMM slot in the P0 processor (DIMM slot 15), followed by the second DIMM slot in the P1 processor (DIMM slot 15), and so on.

3

Memory channels - eight per processor, each containing a set of two DIMM slots: one black and one white

The population rules for adding DIMMs to the server, based on the server configuration, are as follows:

  • Dual processor server:

    • 512 GB: Sixteen 32 GB DDR4 DIMMs in P0 and P1, slots D0, 2, 4, 6, 9, 11, 13, and 15

    • 1 TB: Sixteen 64 GB DDR4 DIMMs in P0 and P1, slots D0, 2, 4, 6, 9, 11, 13, and 15

    • 1.5 TB: Sixteen 32 GB DDR4 DIMMs in P0 and P1, slots D0, 2, 4, 6, 9, 11, 13, 15 and sixteen 64 GB DDR4 DIMMs in P0 and P1, slots D1, 3, 5, 7, 8, 10, 12, 14

      Note:

      The 1.5 TB fixed base configuration is a field memory configuration only.

    • 2 TB: Thirty-two 64 GB DDR4 DIMMs in P0 and P1, slots D0-15

  • Single processor server:

    • 384 GB: Twelve 32 GB DDR4 DIMMs in P0 slots D0-5, slots 10-15

    • 1 TB: Sixteen 64 GB DDR4 DIMMs in P0 slots D0-15