Compaq ProLiant 1000 User Guide: Online Storage Controller Recovery Option - Page 70

Recovering from Mass Storage, Controller Failure

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6-1 Chapter 6 Recovering from Mass Storage Controller Failure OSCRO enables the server to continue operating even when a mass storage controller fails. This section outlines the steps to replace a failed controller and recover the fault-tolerant state of the I/O subsystem. Recovering from mass storage controller failure differs depending on whether the server utilizes PCI Hot Plug technology. If the controller that failed is your boot device controller, you may need to take some action. You must make sure the boot device controller is connected to the primary port of the ProLiant Storage System/F or /U, that is, the one that is active after the power is cycled on the ProLiant Storage System/F or /U. When the power is cycled on the ProLiant Storage System/F or /U, the Recovery Server Switch inside is reset and the primary port becomes the active port by default. By aligning the primary port of the ProLiant Storage System/F or /U with the active controller of the controller pair, the system recovers from a power failure using the power-up defaults. Recovering from Mass Storage Controller Failure Using PCI Hot Plug Technology PCI Hot Plug technology and OSCRO work together to provide a means for replacing a failed mass storage controller without shutting down the system. The steps involved are: 1. Using the PCI Hot Plug Utility, power off the PCI slot containing the controller. 2. Replace the controller. 3. Use the PCI Hot Plug Utility to power on the PCI slot containing the replacement controller. Online Storage Controller Recovery Option User Guide

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6-1
Online Storage Controller Recovery Option User Guide
Chapter 6
Recovering from Mass Storage
Controller Failure
OSCRO enables the server to continue operating even when a mass storage
controller fails. This section outlines the steps to replace a failed controller and
recover the fault-tolerant state of the I/O subsystem.
Recovering from mass storage controller failure differs depending on whether
the server utilizes PCI Hot Plug technology. If the controller that failed is your
boot device controller, you may need to take some action. You must make sure
the boot device controller is connected to the primary port of the ProLiant
Storage System/F or /U, that is, the one that is active after the power is cycled
on the ProLiant Storage System/F or /U.
When the power is cycled on the ProLiant Storage System/F or /U, the
Recovery Server Switch inside is reset and the primary port becomes the active
port by default. By aligning the primary port of the ProLiant Storage System/F
or /U with the active controller of the controller pair, the system recovers from
a power failure using the power-up defaults.
Recovering from Mass Storage
Controller Failure Using PCI Hot Plug
Technology
PCI Hot Plug technology and OSCRO work together to provide a means for
replacing a failed mass storage controller without shutting down the system.
The steps involved are:
1.
Using the PCI Hot Plug Utility, power off the PCI slot containing the
controller.
2.
Replace the controller.
3.
Use the PCI Hot Plug Utility to power on the PCI slot containing the
replacement controller.