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NS0-157 · Question #332

You can avoid data corruption when you issue the cf forcetakeover -d command if the remote node is ________.

The correct answer is D. powered off and inaccessible. Using 'cf forcetakeover -d' is safe only when the partner node is fully powered off and inaccessible, which eliminates any possibility of simultaneous writes causing split-brain corruption.

Data Protection and High Availability

Question

You can avoid data corruption when you issue the cf forcetakeover -d command if the remote node is ________.

Options

  • Ain a giveback mode
  • Bfenced off manually
  • Cpowered on and accessible
  • Dpowered off and inaccessible

How the community answered

(52 responses)
  • A
    6% (3)
  • B
    4% (2)
  • C
    17% (9)
  • D
    73% (38)

Why each option

Using 'cf forcetakeover -d' is safe only when the partner node is fully powered off and inaccessible, which eliminates any possibility of simultaneous writes causing split-brain corruption.

Ain a giveback mode

A node in giveback mode is still operationally active and may have in-flight writes, creating a split-brain risk if a forced takeover with '-d' is initiated.

Bfenced off manually

Manually fencing the node is a separate administrative action and does not provide the same absolute guarantee of inactivity as a confirmed power-off when bypassing NVRAM checks.

Cpowered on and accessible

A powered-on and accessible node may still be processing and writing data, meaning 'cf forcetakeover -d' would very likely cause data corruption in this state.

Dpowered off and inaccessibleCorrect

When the remote node is powered off and inaccessible, it cannot be processing I/O or writing to shared storage, removing all risk of a split-brain scenario during the forced takeover. The '-d' flag disables the NVRAM consistency check, making it essential to confirm the partner is fully offline before issuing the command. Only in this state can data integrity be guaranteed because a single node exclusively controls writes.

Concept tested: Cluster failover forced takeover data corruption prevention

Source: https://docs.netapp.com/us-en/ontap/high-availability/ha-management-overview-concept.html

Topics

#HA failover#forcetakeover#data corruption#cf commands

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