Azure Storage Performance

From a presentation by Brad Calder - Microsoft PDC 2009 

Per Object/Partition Performance at Commercial Availability

Throughput

Single Queue and Single Table Partition

Up to 500 transactions per second 

Single Blob

Small reads/writes up to 30 MB/s

Large reads/writes up to 60 MB/s

Latency

Typically around 100ms (for small trans)

But can increase to a few seconds during heavy spikes while load balancing kicks in