QuickSpecs
HP AlphaServer GS1280 Systems
GS Options
Configuring memory is a compromise between cost, total memory capacity, and memory bandwidth requirements. The following may be used as guidelines:
Applications, in which large amounts of memory can substantially reduce I/O throughput, may be optimized for total memory capacity and future capacity growth. (Case B)
Typical commercial applications, such as transaction processing (OLTP) and
Data mining can benefit from additional memory bandwidth. It is best to match the number of memory base modules to the number of CPUs. (Case A)
The most demanding
Memory Specification | 800 MHz | 1066 MHz |
Use only with the indicated CPU Modules (mandatory) | Must be used | May be used |
| only with | with either |
| EV7 1.15 GHz | EV7 1.3 GHz |
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| or |
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| EV7 1.15 GHz |
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Step 5 - System I/O Expansion - Mandatory
Configuration Guidelines
1.Each AlphaServer GS1280 system requires one I/O Master Building Block Drawer per system. Additional I/O Building Block Drawers are optional.
2.Each additional hard partition in the system requires:
One Standard I/O Drawer (Master or Expansion), or
Shared (up to four hard partitions) access to one High Performance I/O Drawer (Master or Expansion)
3.Each CPU in a GS1280 System Building Block Drawer can provide one I/O connection to an I/O Drawer.
4.Either a Standard I/O Drawer (Expansion or Master) or High Performance I/O Drawer (Expansion or Master) can be used for optional I/O expansion. Any combination of drawers is supported up to the I/O connection limit of 32 per hard partition or 64 per system with 2 or more hard partitions.
The Standard I/O Drawer requires one I/O connection.
The High Performance I/O Drawer requires one and optionally up to four connections.
Example - AlphaServer GS1280 Model 16 with 12 processors
Twelve Processors, one I/O connection each | =12 I/O connections available |
Six Standard I/O Drawers, one I/O connection each | = 6 I/O connections |
One High Performance I/O Drawer with four I/O connections | = 4 I/O connections |
One High Performance I/O Drawer with two I/O connections | = 2 I/O connections |
DA - 11921 Worldwide — Version 24 — July 23, 2007 | Page 13 |