Which two statements about DIMM replacement in Cisco UCS Servers are true? (Choose two.)
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A. B. C. D.AC.
A. In blade servers, DIMMs can be installed in either 1, 2, 4, or 8 DIMMs per channel: This statement is true. In Cisco UCS blade servers, memory is installed in DIMM slots that are grouped into channels. Each channel supports up to 8 DIMMs, and the DIMMs can be installed in 1, 2, 4, or 8 DIMMs per channel, depending on the server configuration.
B. Rack-mount and blade servers have memory fault LEDs that indicate which DIMM requires attention: This statement is true. Cisco UCS rack-mount and blade servers have memory fault LEDs that indicate which DIMM or DIMMs have experienced an error or failure. The LEDs are located on the server front panel and are color-coded to indicate the severity of the issue.
C. In servers that require pairs of DIMMs, the pairs must be identical (manufacturer, size, part #, and so on): This statement is true. Some Cisco UCS servers require that memory be installed in pairs, with each pair consisting of two identical DIMMs. These DIMMs must match in terms of manufacturer, size, part number, and other specifications.
D. If the memory in a server is not fully populated, you can install DIMMs in any open slot: This statement is false. In most cases, Cisco UCS servers require that DIMMs be installed in specific slots or channels in order to maintain memory performance and reliability. If you install DIMMs in non-optimal slots or channels, you may experience performance issues or even server failure.
In summary, options A and B are correct statements about DIMM replacement in Cisco UCS servers, while options C and D are incorrect or false statements.