HP NetRAID-4M Controller - Manual (Page 43)

3-19
Working with Controllers
flash image (UFI) files, or to save a controller’s current flash contents
to a pair of UFI files.
NetRAID-4M controllers use nonvolitile flash to store on-board
software, such as BIOS, microprocessor kernel and monitor. When it
becomes necessary to update any of those components (for example,
to correct a problem or provide a new feature) you must update
your controller’s flash components with newer flash images.
The process of updating a NetRAID-4M controller’s flash must be
done carefully to avoid rendering the controller inoperable.
Note: Depending on the model, a controller may have a
single flash component or multiple flash components. For
example, a controller may contain two flash components,
one containing the controller’s BIOS image, and the other
component containing the microprocessor kernel and
monitor images.
The CLI performs the following functions:
■ Update: updates all of the flash components on a controller
with the flash image data from a pair of UFI files.
■ Save: reads the contents of a controller’s flash components and
saves the data to a pair of UFI files. This allows you to later
restore a controller’s flash to its previous contents should the
need arise.
■ Compare: reads the contents of a controller’s flash components
and compares it to the contents of a specified pair of UFI files.
Understanding User Flash Image (UFI) Files
The CLI updates a controller’s flash by reading flash “images” from
a supplied pair of UFI files. A UFI file contains all of the flash images
necessary to update all of the flash components on a controller.
Information contained in a UFI file’s header identifies which
controller type these images apply to, how many flash image
sections are contained in the file, their locations and sizes, flash
version information, and checksums to verify the integrity of the file
and its individual flash image sections.