NonStop S-Series System Expansion and Reduction Guide

Planning System Expansion
HP NonStop S-Series System Expansion and Reduction Guide—522465-009
2-2
Rules for Creating a Block
•
Two or more I/O enclosures without a processor enclosure. This unit is not a block
because if more than one I/O enclosure is in a block, the I/O enclosures must be
attached to a processor enclosure.
You can think of a block as a subcomponent of your system, or part of a corner of a
tetrahedron as described in the NonStop S-Series Planning and Configuration Guide.
Rules for Creating a Block
•
Configure enclosures individually before you make them into a block.
•
Cable individually configured enclosures together into blocks before adding them
to your system.
•
Add blocks to the system one at a time, no matter how large or small each block is.
•
Add power cords and ServerNet cables to all the enclosures in a block before you
add the block to your system.
•
If the block includes multiple enclosures, cable all the enclosures in the block
together before you add the block to your system.
•
In all cases, configure an enclosure into a block offline, isolated from the system to
which you will add it.
Block Structures
Your system accepts different structures of blocks, one block at a time. Therefore, you
can add enclosures to your system in different groupings, depending on what you
need.
For example, you might want to add one processor enclosure and one I/O enclosure to
your existing system. In this situation, you have two options:
•
You can add the enclosures in two different places as two blocks.
•
You can combine the two enclosures into one block and then add that block to your
system.
For more examples of block structures, see Examples of Block Structures on page 2-4.