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 multi-user timesharing, usually operate efficiently from cache and may not be materially affected by memory bandwidth. Memory configuration is a balance between memory bandwidth and future capacity growth. (Case B)

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 high-performance technical applications achieve a performance level that is directly proportional to memory bandwidth. In these cases, configure two memory options per CPU. (Case A)

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

 

(3X-KN72C-**) (3X-KN72D-**)

 

 

or

 

 

EV7 1.15 GHz

 

 

(3X-KN72C-**)

1-GB RDRAM Memory (4x256) Option

3X-MS7AB-BA

3X-MS7AC-BA

1-GB RDRAM Memory (1x256) RAID Option

3X-MS7AB-BC

3X-MS7AC-BC

2-GB RDRAM Memory (4x512) Option

3X-MS7AB-CA

3X-MS7AC-CA

2-GB RDRAM Memory (1x512) RAID Option

3X-MS7AB-CC

3X-MS7AC-CC

4-GB RDRAM Memory (4x1024) Option

3X-MS7AB-DB

3X-MS7AC-DA

4-GB RDRAM Memory (1x1024) RAID Option

3X-MS7AB-DD

3X-MS7AC-DC

 

 

 

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

Page 13
Image 13
HP GS1280 manual Memory Specification, System I/O Expansion Mandatory Configuration Guidelines