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Zorluk: OrtaData Lifecycle Management and Retention

An enterprise is designing a data storage solution for a medical genomics platform. Raw DNA sequencing files are uploaded to an Azure Blob Storage account configured with the Hot access tier.

* The sequencing files are processed by an analysis application immediately upon upload. The analysis requires sub-second retrieval latency and is guaranteed to complete within 7 days of upload.
* Once analyzed, the raw files are rarely accessed but must be retained for 365 days to meet regulatory compliance requirements.
* During the compliance retention period, a retrieval latency of up to 15 hours is acceptable.

You need to design a cost-effective data lifecycle management policy for the storage account.

Which two actions should you include in the lifecycle management policy?

  1. Transition the blobs to the Archive tier 7 days after blob creationCevap
  2. Delete the blobs 365 days after blob creationCevap
  3. C
    Transition the blobs to the Archive tier immediately upon blob creation
  4. D
    Transition the blobs to the Archive tier 5 days after blob creation

Cevap

To meet the requirements at the lowest cost, you should configure the lifecycle policy to transition the blobs to the Archive tier 7 days after blob creation, and delete the blobs 365 days after blob creation.
Transitioning the blobs to the Archive tier 7 days after creation ensures the analysis application can access the files from the Hot tier with sub-second latency during the first 7 days, while minimizing costs for the remaining retention period. Deleting the blobs 365 days after creation satisfies the regulatory retention period and stops further storage costs.

Adım Adım Çözüm

1
Identify the latency and access requirements for the initial processing phase.
The files require sub-second latency for up to 7 days, meaning they must remain in the Hot tier for at least 7 days.
Accessing files from the Archive tier is not possible without rehydration, which takes hours and violates the sub-second latency constraint.
2
Determine the optimal tier for the retention phase.
The Archive tier is selected because the data is rarely accessed, must be kept for 365 days (which exceeds the Archive tier's 180-day minimum retention period), and can tolerate retrieval times up to 15 hours.
Transitioning to the Archive tier 7 days after creation minimizes storage costs while complying with the 15-hour retrieval limit.
3
Identify the end-of-lifecycle requirements.
The blobs must be deleted 365 days after creation.
This satisfies the 365-day regulatory retention period and prevents ongoing storage charges after the requirement expires.

Anahtar Kavram

Azure Blob Storage lifecycle management allows automating transitions between Hot, Cool, and Archive tiers, as well as expiration/deletion, based on the age of the blob. Designing these rules requires balancing access latency requirements against storage costs and minimum retention periods.
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Data Lifecycle Management and Retention

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