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SG0-001 · Question #486

A storage administrator has created a ruleset to determine the appropriate storage tier when storing new data in a tiered storage solution. The administrator notes later that the default tier is recei

The correct answer is B. Check the order of the rules. If a ruleset for tiered storage isn't placing data correctly and all data goes to the default tier, the administrator should first check the order of the rules.

Storage Management

Question

A storage administrator has created a ruleset to determine the appropriate storage tier when storing new data in a tiered storage solution. The administrator notes later that the default tier is receiving all of the new data. Which of the following should the administrator perform FIRST?

Options

  • AAdd a new storage tier to the solution
  • BCheck the order of the rules
  • CEnlarge the capacity of the default tier
  • DEliminate the default rule

How the community answered

(39 responses)
  • A
    13% (5)
  • B
    77% (30)
  • C
    8% (3)
  • D
    3% (1)

Why each option

If a ruleset for tiered storage isn't placing data correctly and all data goes to the default tier, the administrator should first check the order of the rules.

AAdd a new storage tier to the solution

Adding a new storage tier will not resolve the issue of existing rules being incorrectly applied or ordered, as the problem lies with the current ruleset's logic, not tier availability.

BCheck the order of the rulesCorrect

In rule-based systems, rules are often processed in a specific order, and if a broad or default rule is placed too high, it can catch all incoming data before more specific rules have a chance to be evaluated, directing everything to the default tier.

CEnlarge the capacity of the default tier

Enlarging the capacity of the default tier addresses a capacity problem, not a misconfiguration in the ruleset that is causing all data to be routed to that tier inappropriately.

DEliminate the default rule

Eliminating the default rule without first understanding why it's being hit for all data could lead to data being un-tiered or improperly handled if no other rules match.

Concept tested: Storage tiering rule precedence and troubleshooting

Source: https://www.ibm.com/docs/en/spectrum-control/5.4.x?topic=tiers-policies-data-placement

Topics

#tiered storage#storage policies#data placement#troubleshooting

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