When planning a new disk unit to populate the reserved 16U space on a z14 ZR1, what could prevent installation?

Question

Options

• A8U minimum and two power cords
• BWeight and power consumption
• CHeight and maximum capacity
• D6U minimum and Flash

• A
  3% (1)
• B
  3% (1)
• C
  90% (36)
• D
  5% (2)

Explanation

Option C is correct because adding a disk unit to the z14 ZR1's reserved 16U space requires that the unit's physical height (measured in rack units) fits within that reserved space without exceeding it, and that the total storage added does not exceed the system's maximum capacity - either constraint can block installation entirely.

Option A is wrong because "8U minimum and two power cords" doesn't reflect an actual z14 ZR1 disk expansion constraint - power cord count is a connectivity consideration, not an installation gate for populating reserved rack space. Option B is wrong because while weight and power consumption are general data center concerns, they are not the specific IBM-defined constraints that govern whether a disk unit can be installed in the reserved space of a ZR1. Option D is wrong because there is no "6U minimum" rule for disk units on the z14 ZR1, and Flash storage type is not itself a blocking condition.

Memory tip: Think "Does it FIT and is there ROOM?" - Height = physical fit in the reserved U space; Maximum capacity = logical room left in the system. If either ceiling is hit, the disk can't go in.

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