Question

Difficulty: EasyData Lifecycle Management and Retention

A media streaming company is designing a storage strategy for its video library using Azure Blob Storage. The video files are frequently watched during the first 30 days after they are uploaded. After this initial period, the files are rarely accessed, but they must remain online and accessible with sub-second latency for immediate streaming when requested. You need to define a lifecycle management policy to reduce storage costs. Which rule action should you apply to blobs that are older than 30 days?

  1. Move the blobs to the Cool storage tier.Answer
  2. B
    Move the blobs to the Archive storage tier.
  3. C
    Change the storage account replication setting to Locally Redundant Storage (LRS).
  4. D
    Move the blobs to the Archive storage tier and configure high-priority rehydration.

Answer

Move the blobs to the Cool storage tier.
Moving the blobs to the Cool storage tier is the correct solution because the Cool tier is designed for infrequently accessed data and provides sub-second latency. This reduces storage costs compared to the Hot tier while satisfying the requirement for immediate streaming.

Step-by-Step Solution

1
Analyze the access pattern and latency requirements.
The video files are frequently accessed for 30 days, then rarely accessed, but must remain online with sub-second latency for immediate streaming.
This establishes that the data must stay in an online tier (Hot, Cool, or Cold) and cannot be moved to an offline tier (Archive).
2
Identify the lowest-cost online storage tier that meets the requirements.
The Cool storage tier offers lower storage costs than the Hot tier while maintaining sub-second retrieval times.
Cool tier is the optimal choice for infrequently accessed data that still requires immediate access.

Key Concept

Configuring Azure Blob Storage lifecycle management policies to transition blobs to the optimal online tier based on access frequency and latency requirements.
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