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Merge pull request #100536 from xyh1/patch-95
fix archive details
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articles/storage/blobs/storage-blob-storage-tiers.md

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The archive access tier has the lowest storage cost. But it has higher data retrieval costs compared to the hot and cool tiers. Data in the archive tier can take several hours to retrieve. Data must remain in the archive tier for at least 180 days or be subject to an early deletion charge.
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While a blob is in archive storage, the blob data is offline and can't be read, copied, overwritten, or modified. You can't take snapshots of a blob in archive storage. However, the blob metadata remains online and available, allowing you to list the blob and its properties. For blobs in archive, the only valid operations are GetBlobProperties, GetBlobMetadata, ListBlobs, SetBlobTier, and DeleteBlob.
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While a blob is in archive storage, the blob data is offline and can't be read, overwritten, or modified. To read or download a blob in archive, you must first rehydrate it to an online tier. You can't take snapshots of a blob in archive storage. However, the blob metadata remains online and available, allowing you to list the blob and its properties. For blobs in archive, the only valid operations are GetBlobProperties, GetBlobMetadata, ListBlobs, SetBlobTier, CopyBlob, and DeleteBlob. See [Rehydrate blob data from the archive tier](storage-blob-rehydration.md) to learn more.
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Example usage scenarios for the archive access tier include:
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## Blob-level tiering
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Blob-level tiering allows you to change the tier of your data at the object level using a single operation called [Set Blob Tier](/rest/api/storageservices/set-blob-tier). You can easily change the access tier of a blob among the hot, cool, or archive tiers as usage patterns change, without having to move data between accounts. All tier changes happen immediately. However, rehydrating a blob from archive can take several hours.
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Blob-level tiering allows you to change the tier of your data at the object level using a single operation called [Set Blob Tier](/rest/api/storageservices/set-blob-tier). You can easily change the access tier of a blob among the hot, cool, or archive tiers as usage patterns change, without having to move data between accounts. All tier change requests happen immediately and tier changes between hot and cool are instantaneous. However, rehydrating a blob from archive can take several hours.
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The time of the last blob tier change is exposed via the **Access Tier Change Time** blob property. If a blob is in the archive tier, it can't be overwritten, so uploading the same blob isn't permitted in this scenario. When overwriting a blob in the hot or cool tier, the newly created blob inherits the tier of the blob that was overwritten unless the new blob access tier is explicitly set on creation.
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The time of the last blob tier change is exposed via the **Access Tier Change Time** blob property. When overwriting a blob in the hot or cool tier, the newly created blob inherits the tier of the blob that was overwritten unless the new blob access tier is explicitly set on creation. If a blob is in the archive tier, it can't be overwritten, so uploading the same blob isn't permitted in this scenario.
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> [!NOTE]
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> Archive storage and blob-level tiering only support block blobs. You also cannot currently change the tier of a block blob that has snapshots.
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**When rehydrating a blob from archive tier to the hot or cool tier, how will I know when rehydration is complete?**
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During rehydration, you may use the get blob properties operation to poll the **Archive Status** attribute and confirm when the tier change is complete. The status reads "rehydrate-pending-to-hot" or "rehydrate-pending-to-cool" depending on the destination tier. Upon completion, the archive status property is removed, and the **Access Tier** blob property reflects the new hot or cool tier.
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During rehydration, you may use the get blob properties operation to poll the **Archive Status** attribute and confirm when the tier change is complete. The status reads "rehydrate-pending-to-hot" or "rehydrate-pending-to-cool" depending on the destination tier. Upon completion, the archive status property is removed, and the **Access Tier** blob property reflects the new hot or cool tier. See [Rehydrate blob data from the archive tier](storage-blob-rehydration.md) to learn more.
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**After setting the tier of a blob, when will I start getting billed at the appropriate rate?**
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includes/storage-blob-rehydrate-include.md

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> [!NOTE]
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> Standard priority is the default rehydration option for archive. High priority is a faster option that will cost more than Standard priority rehydration and is usually reserved for use in emergency data restoration situations.
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During rehydration, you may check the *Archive Status* blob property to confirm if the tier has changed. The status reads "rehydrate-pending-to-hot" or "rehydrate-pending-to-cool" depending on the destination tier. Upon completion, the archive status property is removed, and the *Access Tier* blob property reflects the new hot or cool tier.
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Once a rehydration request is initiated, it cannot be canceled. During rehydration, you may check the *Archive Status* blob property to confirm if the tier has changed. The status reads "rehydrate-pending-to-hot" or "rehydrate-pending-to-cool" depending on the destination tier. Upon completion, the archive status property is removed, and the *Access Tier* blob property reflects the new hot or cool tier.

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