An administrator made writes to the storage resource using Redirect on Write architecture. What is the size of slices that are allocated from the parent pool?

Question

Options

• A64 KB
• B8 KB
• C64 MB
• D256 MB

• A
  6% (2)
• B
  3% (1)
• C
  3% (1)
• D
  87% (27)

Explanation

In Redirect on Write (ROW) architecture - as implemented in Dell EMC storage systems - slices allocated from the parent pool are 256 MB, making D correct. This large slice size is by design: ROW redirects new writes to freshly allocated space rather than copying original data first, and 256 MB granularity balances pool management efficiency with performance at enterprise scale.

Why the distractors are wrong:

• A (64 KB) and B (8 KB) are typical block or chunk sizes at the file system or I/O level, not pool-level slice allocations in ROW architectures.
• C (64 MB) is a plausible-sounding enterprise size but does not match the specified ROW pool slice standard; it may be confused with chunk sizes in other storage tiers or technologies.

Memory tip: Associate ROW with "Really Outstanding Width" - the 256 MB slice is the biggest option and reflects the wide, coarse-grained allocation ROW uses to minimize metadata overhead when redirecting writes at pool level.

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