The system must manage large-scale distributed storage of data, support a large number of concurrent accesses, and provide different services for different users.

该系统需要管理大规模分布存储的数据，需要支持大量用户同时快速地并发访问，需要为不同的用户提供不同的服务。

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It seems like there would be a huge market for them, so in fact, many companies might emerge to provide these services to all different degrees.

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We sell six different software products and provide services, like training, customization and support for those products.

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The situation is different if you negotiate for deferred payments before you provide services.

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