When replacing a Cisco UCS B-Series blade server, which component must be checked to ensure compatibility with the existing chassis?

Question

Options

• AChassis midplane revision
• BFabric interconnect model
• CBlade firmware version
• DPower supply unit

• A
  87% (40)
• B
  4% (2)
• C
  7% (3)
• D
  2% (1)

Explanation

Chassis midplane revision is the critical compatibility check because the midplane is the passive backplane that physically and electrically connects blade servers to the I/O modules and fabric interconnects - different midplane revisions support different blade generations, and inserting an incompatible blade can result in the server not being recognized or powered on.

Why the distractors are wrong:

• B (Fabric interconnect model): The fabric interconnect matters for overall UCS domain design, but blade-to-chassis compatibility is governed by the midplane, not the FI directly.
• C (Blade firmware version): Firmware can be updated after installation; it doesn't determine whether a blade is physically compatible with a chassis.
• D (Power supply unit): PSUs provide chassis-wide power and are not blade-specific; swapping a blade doesn't require checking PSU compatibility.

Memory tip: Think "midplane = marriage between blade and chassis" - just like a socket revision on a motherboard determines CPU compatibility, the midplane revision determines which blade generations a UCS chassis will accept.

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