Compaq AlphaServer 160 Guide de l'utilisateur télécharger pdf (Page 61)

GS160/320 System Configuration Rules 3-15

Memory Configuration Guidelines

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On a memory module, DIMMs are divided into two groups of four called

arrays.

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A memory module must be populated on an array-by-array basis; that is,

groups of four DIMMs must be installed.

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DIMMs in an array must be the same size and type.

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DIMM sizes include 256 Mbyte, 512 Mbyte, and 1 Gbyte.

There are two types of DIMMs: single density (SD) and double density (DD).

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Density does not affect interleaving.

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One directory module DIMM is required for each memory array in systems

with more than one QBB.

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The type and number of DIMMs installed in the directory module is based

on the number of memory arrays populated and the physical size of the

memory arrays. See the table below.

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A larger DIMM type may always be used in place of the minimum required

DIMM type.

Directory DIMM Type Memory Array Size Part Number

0 256 MB 54-25019-AA

1 1 GB 54-25023-AA

2 2 GB 54-25023-BA

3 2 GB 54-25023-CA

4 4 GB 54-25023-DA

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 180 181

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Compaq AlphaServer 160 Guide de l'utilisateur Page 61