Which of the following planning considerations is required when ordering the 16U reserved feature?

Question

Options

• AOrder the number of I/O cables that will be needed.
• BPlan for the number of rack-mounted disks.
• COrder a MES for the third of fourth PCle+ I/O drawer.
• DPlan for the number of power cords required.

• A
  9% (4)
• B
  2% (1)
• C
  76% (35)
• D
  13% (6)

Explanation

When ordering the 16U reserved feature on IBM Z systems, option C is correct because this feature specifically reserves rack space for future PCIe+ I/O drawer expansion - and a MES (Miscellaneous Equipment Specification) order is the required mechanism to add the third or fourth PCIe+ I/O drawer later. The 16U reserved feature is essentially a placeholder, and the MES is the formal ordering process that activates that reserved space.

Why the distractors are wrong:

• A (I/O cables) - Cable quantities are a general planning task for any I/O configuration, not a requirement specific to the 16U reserved feature.
• B (rack-mounted disks) - Disk planning is unrelated to the 16U reserved feature, which is about PCIe+ I/O drawer capacity, not storage.
• D (power cords) - Power cord planning applies broadly to all hardware installations, not as a specific requirement triggered by the 16U reserved feature.

Memory tip: Think of the "16U" as a reserved parking spot for a future PCIe+ I/O drawer - the MES is the "ticket" you must order to actually use that spot. No MES = no drawer, even though the space exists.

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