到目前为止尚未讨论的另一个服务，是存档和删除可能不再需要的旧实例的功能。
One additional service not discussed so far is the ability to archive and prune old instances that may no longer be required.
目前不支持访问数组、实例变量和对象引用。
Accessing arrays, instance variables, and object references are not supported as of now.
因为SQL Azure目前有每个实例50gb的限制，因此无法水平扩展到更大的尺寸，开发者必须要使用该技术才能实现水平分区以进行应用的水平扩展。
As SQL Azure currently has a limit of 50gb per instance to scale horizontally to larger sizes, one must employ this technique of horizontal partitioning to achieve application scale-out.
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