NonStop S-Series System Expansion and Reduction Guide

Planning System Expansion
HP NonStop S-Series System Expansion and Reduction Guide—522465-009
2-12
Example of Choosing a Block Structure
Example Step 4: Choose the Block Structure
The previous step shows that each existing processor enclosure can support two more
I/O enclosures. You also can add three processor enclosures for groups 06, 07, and
08, each of which can support four I/O enclosures.
In this example, you will add two processor enclosures and five I/O enclosures. You
must now decide how to build those enclosures into blocks.
The following figure shows a few of the ways you can structure these blocks. For this
example, you want to balance your increased I/O capacity across as many processor
enclosures as possible. So you choose a structure with five blocks, as follows:
•
Three identical blocks, each made of one I/O enclosure
•
Two identical blocks, each made of one processor enclosure and one I/O
enclosure
OR
2 blocks
+ +
+
+
+
I/O
Enclosure
+
7 blocks=
OR ...
VST404.vsd
I/O
Enclosure
I/O
Enclosure
I/O
Enclosure
I/O
Enclosure
Processor
Enclosure
Processor
Enclosure
OR
5 blocks
=
=