Automatic Server Recovery; Usb Support; External Usb Functionality; Redundant Rom Support - HPE ProLiant BL460c Gen10 User Manual

Automatic Server Recovery

ASR is a feature that causes the system to restart when a catastrophic operating system error occurs, such
as a blue screen, ABEND, or panic. A system fail-safe timer, the ASR timer, starts when the System
Management driver, also known as the Health Driver, is loaded. When the operating system is functioning
properly, the system periodically resets the timer. However, when the operating system fails, the timer expires
and restarts the server.
ASR increases server availability by restarting the server within a specified time after a system hang. You can
disable ASR from the System Management Homepage or through UEFI System Utilities.

USB support

Hewlett Packard Enterprise Server Blades support both USB 2.0 ports and USB 3.0 ports. Both types of ports
support installing all types of USB devices (USB 1.0, USB 2.0, and USB 3.0), but may run at lower speeds in
specific situations:
• USB 3.0 capable devices operate at USB 2.0 speeds when installed in a USB 2.0 port.
• When the Server Blade is configured for UEFI Boot Mode, Hewlett Packard Enterprise provides legacy
USB support in the pre-boot environment prior to the operating system loading for USB 1.0, USB 2.0, and
USB 3.0 speeds.
• When the Server Blade is configured for Legacy BIOS Boot Mode, Hewlett Packard Enterprise provides
legacy USB support in the pre-boot environment prior to the operating system loading for USB 1.0 and
USB 2.0 speeds. While USB 3.0 ports can be used with all devices in Legacy BIOS Boot Mode, they are
not available at USB 3.0 speeds in the pre-boot environment. Standard USB support (USB support from
within the operating system) is provided by the OS through the appropriate USB device drivers. Support
for USB 3.0 varies by operating system.
For maximum compatibility of USB 3.0 devices with all operating systems, Hewlett Packard Enterprise
provides a configuration setting for USB 3.0 Mode. Auto is the default setting. This setting impacts USB 3.0
devices when connected to USB 3.0 ports in the following manner:
• Auto (default)—If configured in Auto Mode, USB 3.0 capable devices operate at USB 2.0 speeds in the
pre-boot environment and during boot. When a USB 3.0 capable OS USB driver loads, USB 3.0 devices
transition to USB 3.0 speeds. This mode provides compatibility with operating systems that do not support
USB 3.0 while still allowing USB 3.0 devices to operate at USB 3.0 speeds with state-of-the art operating
systems.
• Enabled—If Enabled, USB 3.0 capable devices operate at USB 3.0 speeds at all times (including the pre-
boot environment) when in UEFI Boot Mode. This mode should not be used with operating systems that
do not support USB 3.0. If operating in Legacy Boot BIOS Mode, the USB 3.0 ports cannot function in the
pre-boot environment and are not bootable.
• Disabled—If configured for Disabled, USB 3.0 capable devices function at USB 2.0 speeds at all times.
The pre-OS behavior of the USB ports is configurable in the UEFI System Utilities, so that the user can
change the default operation of the USB ports. For more information, see the HPE UEFI System Utilities User
Guide for HPE ProLiant Gen9 Servers on the Hewlett Packard Enterprise website.

External USB functionality

Hewlett Packard Enterprise provides external USB support to enable local connection of USB devices for
Server Blade administration, configuration, and diagnostic procedures.
For additional security, external USB functionality can be disabled through USB options in UEFI System
Utilities.

Redundant ROM support

The Server Blade enables you to upgrade or configure the ROM safely with redundant ROM support. The
Server Blade has a single ROM that acts as two separate ROM images. In the standard implementation, one
68 Automatic Server Recovery