Compaq HSG80 - StorageWorks RAID Array Controller Spécifications télécharger pdf (Page 39)

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Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide

Cache Module

Each controller requires a companion cache module as shown in Figure 1–5.

Figure 1–3 on page 1–10, shows the location of a controller’s companion cache

module. The cache module, which can contain up to 512 MB of memory, increases

the subsystem’s I/O performance by providing read, read-ahead, write-through, and

write-back caching.

The size of the memory contained in the cache module depends on the configuration

of the DIMMs, with the supported combinations shown in Table 1–5. For placement

of the DIMMs, see the HSG80 Array Controller ACS Version 8.3 and 8.4

Maintenance and Service Guide.

Table 1–5. Cache Module Memory Configurations

DIMMs Quantity Memory

32 MB 2 64 MB

32 MB 4 128 MB

128 MB 2 256 MB

128 MB 4 512 MB

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 395 396

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