• If the storage device is an external device other than a disc, connect the storage device to the
server.
Step 2. Start the Setup Utility program. See
“Starting the Setup Utility program” on page 161.
Step 3. Select Startup ➙ FIXED BOOT ORDER Priorities.
Step 4. Follow the instructions on the right side of the screen to change the startup device sequence.
Step 5. To save settings and exit the Setup Utility program, press F10; then, select Yes in the displayed
window, and press Enter.
Selecting a temporary startup device
Note: Not all discs and storage drives are applicable as startup device.
To select a temporary startup device, complete the following steps:
Step 1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, skip to
Step 2 on page 164.
• If the storage device is a disc, ensure that your server is turned on. Then, insert the disc into the
optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
server.
Step 2. Turn on or restart the server. Before the operating system starts up, repeatedly press and release
F12 until Startup Device Menu is displayed.
Step 3. Select the desired storage device and press Enter. The server will start up from the selected
device.
Exiting the Setup Utility program
Follow this procedure to exit the Setup Utility program.
To exit the Setup Utility program, do one the following steps:
• To save the new settings, press F10; then, select Yes in the displayed window, and press Enter.
• If you do not want to save the new settings, select Exit ➙ Discard Changes and Reset and press Enter;
then, select Yes in the displayed window, and press Enter.
Memory configuration
Memory performance depends on several variables, such as memory mode, memory speed, memory ranks,
memory population and processor.
More information about optimizing memory performance and configuring memory is available at the Lenovo
Press website:
https://lenovopress.lenovo.com/servers/options/memory
In addition, you can take advantage of a memory configurator, which is available at the following site:
https://dcsc.lenovo.com/#/memory_configuration
For specific information about the required installation order of memory modules in your server based on the
system configuration and memory mode that you are implementing, see “Memory module installation rules
and order” on page 33.
164
ThinkSystem ST45 V3 User Guide
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