What is a characteristic of FAST VP?

Question

Options

• AUsers can enable or disable FAST VP at the LUN level
• BOnce enabled, FAST VP data relocation runs in background at all times
• CFAST VP optimizes data placement by moving 1 GB slices between disk tiers.
• DUsers can set the FAST VP data relocation rate.

• A
  4% (2)
• B
  2% (1)
• C
  2% (1)
• D
  91% (43)

Explanation

Option D is correct because FAST VP allows administrators to configure the data relocation rate (typically low, medium, or high), giving them control over how aggressively data is moved between tiers during scheduled relocation windows-balancing performance impact against tiering efficiency.

Why the distractors are wrong:

• A is incorrect because FAST VP is managed at the storage pool level, not the individual LUN level-you cannot toggle it per LUN.
• B is incorrect because FAST VP relocation runs during scheduled windows, not continuously in the background at all times; it analyzes I/O patterns and then relocates data on a schedule.
• C is incorrect because FAST VP moves data in 256 MB slices (extents), not 1 GB slices-the 1 GB figure is a common trap.

Memory tip: Think of FAST VP as a "controlled" tiering system - the key word is rate, meaning human-adjustable speed. If an answer implies FAST VP is always-on, automatic without limits, or granular to the LUN, it's wrong. Remember "256 MB slices" by associating it with a quarter of a gigabyte.

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