BlobRequestOptions.ParallelOperationThreadCount Property


Gets or sets the number of blocks that may be simultaneously uploaded.

public int? ParallelOperationThreadCount { get; set; }
member this.ParallelOperationThreadCount : Nullable<int> with get, set
Public Property ParallelOperationThreadCount As Nullable(Of Integer)

Property Value


An integer value indicating the number of parallel blob upload operations that may proceed.


BlobRequestOptions parallelThreadCountOptions = new BlobRequestOptions();

// Allow up to four simultaneous I/O operations.
parallelThreadCountOptions.ParallelOperationThreadCount = 4;
blob.UploadFromFile(inputFileName, accessCondition: null, options: parallelThreadCountOptions, operationContext: null);


When using the UploadFrom* methods on a blob, the blob will be broken up into blocks. Setting this value limits the number of outstanding I/O "put block" requests that the library will have in-flight at a given time. Default is 1 (no parallelism). Setting this value higher may result in faster blob uploads, depending on the network between the client and the Azure Storage service. If blobs are small (less than 256 MB), keeping this value equal to 1 is advised.

Applies to