<t>The differences are very-well documented on msdn, here. TL;DR:<br/>
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- Block blobs are for your discrete storage objects like jpg's, log files, etc. that you'd typically view as a file in your local OS. Max. size 200GB 4.77TB. Regular (non-Premium) storage only.<br/>
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- Page blobs are for random read/write storage, such as VHD's (in fact, page blobs are what's used for Azure Virtual Machine disks). Max. size 8TB. Supported by both regular and Premium Storage.<br/>
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Note: Premium page blobs have specific sizings (unlike regular page blobs, which can be any size up to 8TB).<br/>
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- 32GB<br/>
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- 64GB<br/>
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- 128GB<br/>
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- 512GB<br/>
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- 1024GB<br/>
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- 2048GB<br/>
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- 4096GB<br/>
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Premium storage provides guaranteed IOPS and throughput, depending on the page blob size chosen (from 120 IOPS+25MB/s @ 32GB to 7500 IOPS+250MB/s @ 2048GB & 4096GB). Specific details around IOPS+throughput details are documented here.</t>
