User guide

2-4 Compaq Smart Array 431 Controller User Guide
Guidelines for Making Changes to Current
Installation
This section provides guidelines for:
■ Installing multiple Smart Array 431 Controllers
■ Installing or replacing drives in your Compaq server
■ Determining maximum storage capacity
■ Changing the fault tolerance
■ Moving drives
■ Moving arrays
■ Restoring an array to its original controller
Installing Multiple Smart Array 431 Controllers
When you install more than one Smart Array 431 Array Controller in the same
server, the following considerations apply:
■ Each Smart Array 431 Controller has one SCSI channel, which supports
up to 15 drives.
■ Each SCSI channel has its own set of unique SCSI IDs (from 0 to 6 and
8 to 15). You must assign a unique ID for each peripheral on the bus. A
hot-pluggable ID is assigned automatically. Non-hot-pluggable drives
require manual SCSI ID selection.