Comments on: Uploading Big Files in Windows Azure Blob Storage using PutListBlock

By: admin

admin — Fri, 10 May 2013 23:47:25 +0000

Hi,
- you can seriously consider the 2nd technique using PutBlockList when dealing with huge files
- the splitting into chunks helps in term of upload speed (given that you’ve enough bandwidth) and resume capability (when one of the file failed). Note that splitting the file into chucks required local access, meaning that you might only be able to do that on smart client app (win form / win service / console app / etc.)…
on web app, you can consider using Silverlight like what Steve did here http://blog.smarx.com/posts/uploading-windows-azure-blobs-from-silverlight-part-3-handling-big-files-by-using-the-block-apis

By: admin

admin — Fri, 10 May 2013 23:14:43 +0000

welcome, Scarlett!

By: admin

admin — Fri, 10 May 2013 23:13:38 +0000

That’s great Vitor!

By: Mario

Mario — Mon, 06 May 2013 14:49:40 +0000

Hello,

We recently start using Azure storage and we would like to find some answers regarding Azure storage blockblob – upload and download huge files. Following are our questions:

- our current implementation for upload and download is using UploadFromStream and DownloadToStream ( Storage Client Library 2.0 ) – is this ok for huge files? We have a delay up to 1 min on download for example until the message to save the file is displayed to the user – this for a 100MB file – can we reduce this, based on checks we did is time needed to create the memorystream

- other option we found on net is to split huge files into chunks and upload/download in parallel. Our web application it is not on Azure, we would like to use just the Azure storage for clients files. Our goal is to to avoid using our bandwidth for these upload/download client files. This second option, splitting into chunks helps? Do we use our bandwidth, or upload/download or it is done directly, between Azure server and user browser?

Thx in advance,

Mario

By: erwin

erwin — Sun, 28 Apr 2013 05:39:01 +0000

Thanks for your post.
But I have been looking too at the usage of a MultipartFileStreamProvider.
This way I found it possible to upload big files (more than 64 MB) and this at a high speed. See for example the post of Yao : http://blogs.msdn.com/b/yaohuang1/archive/2012/07/02/asp-net-web-api-and-azure-blob-storage.aspx

By: Scarlett

Scarlett — Fri, 22 Mar 2013 14:21:57 +0000

Excellent post. I was checking constantly this blog and
I’m impressed! Extremely helpful info specifically the remaining part I deal with such info a lot. I was looking for this certain info for a very long time. Thank you and best of luck.

By: Vitor Ciaramella

Vitor Ciaramella — Mon, 11 Mar 2013 15:33:41 +0000

You can also use the Blob Transfer Utility to download and upload all your blob files.

It’s a tool to handle thousands of (small/large) blob transfers in a effective way.

Binaries and source code, here: http://bit.ly/blobtransfer

By: How to Upload a blob to windows azure by splitting it into chunks and calling PutBlockList using REST and PHP - Windows Azure Blog

Fri, 15 Feb 2013 07:25:27 +0000

[...] Please can someone post some code or give a reference on how we can upload a blob to azure storage by splitting it into chunks and calling PutBlockList using REST and PHP. I have a reference to the same using .NET code here http://wely-lau.net/2012/02/26/uploading-big-files-in-windows-azure-blob-storage-with-putlistblock/ [...]

By: Xue Kun

Xue Kun — Mon, 10 Dec 2012 07:08:01 +0000

Hi Ryan,

Any links to show the built in means for block blobs? Would gladly appreciate it. Thanks.

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