User`s guide

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Chapter 4
4. Using the RAID Controller
This chapter explains the operation of the RAID controller in the following sections:
• “Software Tools for the Controller” on page 59
• “RAID Levels” on page 60
• “CAP Strategy for Selecting a RAID Level” on page 61
• “Disk Topologies” on page 65
• “System Drives” on page 68
• “Drive State Reporting” on page 69
•“Automatic Rebuild” on page71
Software Tools for the Controller
Two software components allow you to manage the RAID controllers: the RAID
controller firmware and the RAID management software.
RAID firmware has the following characteristics:
• Resides on RAID controller (FFX-2) in the LRC I/O module.
• Controls the low-level hardware functions.
• Controls RAID functionality.
• Can be upgraded or “flashed” in the field by trained service personnel.
RAID management software (TPM) has the following characteristics:
• Resides on the host system.
• Use in-band management to interface firmware.
• Provides a graphical user interface (GUI).