Enum Class RedundancyTier

java.lang.Object
java.lang.Enum<RedundancyTier>
com.eqixiac.equinix.design.optimizer.enums.RedundancyTier
All Implemented Interfaces:
Serializable, Comparable<RedundancyTier>, Constable
public enum RedundancyTier extends Enum<RedundancyTier>
Redundancy requirements for metro placement. Higher tiers provide greater geographic diversity and fault isolation at increased cost.

minimumMetros is the tier's floor, not the recommendation size: when no explicit maxMetros constraint is set, the engine recommends up to max(3, minimumMetros + 1) metros regardless of tier — so an intentionally single-metro deployment needs maxMetros(1) in addition to (or instead of) NONE. The MULTI_METRO and MULTI_REGION tiers additionally switch selection to region-diversity-aware round-robin (best metro per region), so geographic spread is a hard outcome rather than a scoring nudge; a selected set that still falls short of the tier raises a REDUNDANCY_GAP risk finding.

See Also:

  • Enum Constant Details

    • NONE

      public static final RedundancyTier NONE
      No redundancy requirement: a single metro satisfies the tier.

    • N_PLUS_1

      public static final RedundancyTier N_PLUS_1
      At least two metros; the same region is acceptable (component-level, not geographic, redundancy).

    • MULTI_METRO

      public static final RedundancyTier MULTI_METRO
      At least two metros with region-diversity-aware selection across regions.

    • MULTI_REGION

      public static final RedundancyTier MULTI_REGION
      At least three metros spanning multiple regions, selected region-diversity-aware.

  • Method Details

    • values

      public static RedundancyTier[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static RedundancyTier valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null