
Chapter 2. Hardware configuration 27
Figure 2-1 DS8800 general architecture
2.2 Processor memory and cache
The DS8800 and DS8700 models offer processor memory options of 32 GB, 64 GB, 128 GB,
256 GB, or 384 GB. The DS8800 Business-Class optionally starts at 16 GB, 32 GB, 64 GB,
or 128 GB.
On all DS8000 models, each processor complex has its own system memory. Within each
processor complex, the system memory is divided into these parts:
Memory used for the DS8000 control program
Cache
Persistent cache
The amount allocated as persistent memory scales according to the processor memory that
is selected.
2.2.1 Cache and I/O operations
Caching is a fundamental ...