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267 lines
7.8 KiB
Markdown
267 lines
7.8 KiB
Markdown
---
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title: "Microsoft Azure Blob Storage"
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description: "Rclone docs for Microsoft Azure Blob Storage"
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date: "2017-07-30"
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---
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<i class="fab fa-windows"></i> Microsoft Azure Blob Storage
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-----------------------------------------
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Paths are specified as `remote:container` (or `remote:` for the `lsd`
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command.) You may put subdirectories in too, eg
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`remote:container/path/to/dir`.
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Here is an example of making a Microsoft Azure Blob Storage
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configuration. For a remote called `remote`. First run:
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rclone config
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This will guide you through an interactive setup process:
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```
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No remotes found - make a new one
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n) New remote
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s) Set configuration password
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q) Quit config
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n/s/q> n
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name> remote
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Type of storage to configure.
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Choose a number from below, or type in your own value
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[snip]
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XX / Microsoft Azure Blob Storage
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\ "azureblob"
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[snip]
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Storage> azureblob
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Storage Account Name
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account> account_name
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Storage Account Key
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key> base64encodedkey==
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Endpoint for the service - leave blank normally.
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endpoint>
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Remote config
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--------------------
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[remote]
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account = account_name
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key = base64encodedkey==
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endpoint =
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--------------------
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y) Yes this is OK
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e) Edit this remote
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d) Delete this remote
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y/e/d> y
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```
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See all containers
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rclone lsd remote:
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Make a new container
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rclone mkdir remote:container
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List the contents of a container
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rclone ls remote:container
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Sync `/home/local/directory` to the remote container, deleting any excess
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files in the container.
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rclone sync /home/local/directory remote:container
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### --fast-list ###
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This remote supports `--fast-list` which allows you to use fewer
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transactions in exchange for more memory. See the [rclone
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docs](/docs/#fast-list) for more details.
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### Modified time ###
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The modified time is stored as metadata on the object with the `mtime`
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key. It is stored using RFC3339 Format time with nanosecond
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precision. The metadata is supplied during directory listings so
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there is no overhead to using it.
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### Hashes ###
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MD5 hashes are stored with blobs. However blobs that were uploaded in
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chunks only have an MD5 if the source remote was capable of MD5
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hashes, eg the local disk.
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### Authenticating with Azure Blob Storage
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Rclone has 3 ways of authenticating with Azure Blob Storage:
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#### Account and Key
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This is the most straight forward and least flexible way. Just fill in the `account` and `key` lines and leave the rest blank.
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#### SAS URL
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This can be an account level SAS URL or container level SAS URL
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To use it leave `account`, `key` blank and fill in `sas_url`.
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Account level SAS URL or container level SAS URL can be obtained from Azure portal or Azure Storage Explorer.
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To get a container level SAS URL right click on a container in the Azure Blob explorer in the Azure portal.
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If You use container level SAS URL, rclone operations are permitted only on particular container, eg
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rclone ls azureblob:container or rclone ls azureblob:
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Since container name already exists in SAS URL, you can leave it empty as well.
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However these will not work
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rclone lsd azureblob:
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rclone ls azureblob:othercontainer
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This would be useful for temporarily allowing third parties access to a single container or putting credentials into an untrusted environment.
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### Multipart uploads ###
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Rclone supports multipart uploads with Azure Blob storage. Files
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bigger than 256MB will be uploaded using chunked upload by default.
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The files will be uploaded in parallel in 4MB chunks (by default).
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Note that these chunks are buffered in memory and there may be up to
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`--transfers` of them being uploaded at once.
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Files can't be split into more than 50,000 chunks so by default, so
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the largest file that can be uploaded with 4MB chunk size is 195GB.
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Above this rclone will double the chunk size until it creates less
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than 50,000 chunks. By default this will mean a maximum file size of
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3.2TB can be uploaded. This can be raised to 5TB using
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`--azureblob-chunk-size 100M`.
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Note that rclone doesn't commit the block list until the end of the
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upload which means that there is a limit of 9.5TB of multipart uploads
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in progress as Azure won't allow more than that amount of uncommitted
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blocks.
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<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/azureblob/azureblob.go then run make backenddocs -->
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### Standard Options
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Here are the standard options specific to azureblob (Microsoft Azure Blob Storage).
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#### --azureblob-account
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Storage Account Name (leave blank to use SAS URL or Emulator)
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- Config: account
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- Env Var: RCLONE_AZUREBLOB_ACCOUNT
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- Type: string
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- Default: ""
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#### --azureblob-key
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Storage Account Key (leave blank to use SAS URL or Emulator)
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- Config: key
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- Env Var: RCLONE_AZUREBLOB_KEY
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- Type: string
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- Default: ""
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#### --azureblob-sas-url
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SAS URL for container level access only
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(leave blank if using account/key or Emulator)
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- Config: sas_url
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- Env Var: RCLONE_AZUREBLOB_SAS_URL
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- Type: string
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- Default: ""
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#### --azureblob-use-emulator
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Uses local storage emulator if provided as 'true' (leave blank if using real azure storage endpoint)
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- Config: use_emulator
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- Env Var: RCLONE_AZUREBLOB_USE_EMULATOR
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- Type: bool
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- Default: false
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### Advanced Options
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Here are the advanced options specific to azureblob (Microsoft Azure Blob Storage).
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#### --azureblob-endpoint
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Endpoint for the service
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Leave blank normally.
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- Config: endpoint
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- Env Var: RCLONE_AZUREBLOB_ENDPOINT
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- Type: string
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- Default: ""
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#### --azureblob-upload-cutoff
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Cutoff for switching to chunked upload (<= 256MB).
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- Config: upload_cutoff
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- Env Var: RCLONE_AZUREBLOB_UPLOAD_CUTOFF
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- Type: SizeSuffix
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- Default: 256M
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#### --azureblob-chunk-size
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Upload chunk size (<= 100MB).
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Note that this is stored in memory and there may be up to
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"--transfers" chunks stored at once in memory.
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- Config: chunk_size
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- Env Var: RCLONE_AZUREBLOB_CHUNK_SIZE
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- Type: SizeSuffix
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- Default: 4M
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#### --azureblob-list-chunk
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Size of blob list.
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This sets the number of blobs requested in each listing chunk. Default
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is the maximum, 5000. "List blobs" requests are permitted 2 minutes
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per megabyte to complete. If an operation is taking longer than 2
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minutes per megabyte on average, it will time out (
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[source](https://docs.microsoft.com/en-us/rest/api/storageservices/setting-timeouts-for-blob-service-operations#exceptions-to-default-timeout-interval)
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). This can be used to limit the number of blobs items to return, to
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avoid the time out.
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- Config: list_chunk
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- Env Var: RCLONE_AZUREBLOB_LIST_CHUNK
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- Type: int
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- Default: 5000
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#### --azureblob-access-tier
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Access tier of blob: hot, cool or archive.
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Archived blobs can be restored by setting access tier to hot or
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cool. Leave blank if you intend to use default access tier, which is
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set at account level
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If there is no "access tier" specified, rclone doesn't apply any tier.
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rclone performs "Set Tier" operation on blobs while uploading, if objects
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are not modified, specifying "access tier" to new one will have no effect.
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If blobs are in "archive tier" at remote, trying to perform data transfer
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operations from remote will not be allowed. User should first restore by
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tiering blob to "Hot" or "Cool".
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- Config: access_tier
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- Env Var: RCLONE_AZUREBLOB_ACCESS_TIER
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- Type: string
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- Default: ""
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<!--- autogenerated options stop -->
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### Limitations ###
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MD5 sums are only uploaded with chunked files if the source has an MD5
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sum. This will always be the case for a local to azure copy.
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### Azure Storage Emulator Support ###
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You can test rlcone with storage emulator locally, to do this make sure azure storage emulator
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installed locally and set up a new remote with `rclone config` follow instructions described in
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introduction, set `use_emulator` config as `true`, you do not need to provide default account name
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or key if using emulator.
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