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NS0-157 · Question #271

What feature balances load across a cluster while consuming less disk capacity than LS SnapMirror copies?

The correct answer is B. FlexCache software. FlexCache balances read load across a cluster by caching only accessed data blocks, consuming significantly less disk capacity than a full load-sharing SnapMirror copy.

Performance, Troubleshooting, and Security

Question

What feature balances load across a cluster while consuming less disk capacity than LS SnapMirror copies?

Options

  • ASnapVAult copies
  • BFlexCache software
  • CFlexClone copies
  • DDP SnapMirror copies

How the community answered

(41 responses)
  • A
    5% (2)
  • B
    71% (29)
  • C
    15% (6)
  • D
    10% (4)

Why each option

FlexCache balances read load across a cluster by caching only accessed data blocks, consuming significantly less disk capacity than a full load-sharing SnapMirror copy.

ASnapVAult copies

SnapVault is a disk-to-disk backup solution designed for long-term retention of point-in-time copies, not for distributing read workloads across a cluster.

BFlexCache softwareCorrect

FlexCache volumes store only the blocks that clients have actually read from the origin volume, making them sparse and far more space-efficient than LS SnapMirror copies which must contain a full replica of the source. By serving reads locally from the cache closest to the client, FlexCache distributes read load across the cluster without duplicating the entire dataset.

CFlexClone copies

FlexClone creates writable, space-efficient clones used for testing or provisioning workflows, not for read load balancing across cluster nodes.

DDP SnapMirror copies

DP SnapMirror copies are full volume replicas used for disaster recovery and consume disk capacity equal to the source volume, making them less efficient than FlexCache for load distribution.

Concept tested: FlexCache read load balancing vs LS SnapMirror

Source: https://docs.netapp.com/us-en/ontap/flexcache/index.html

Topics

#FlexCache#load balancing#disk capacity#LS SnapMirror

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