For simple grids, however, a database is still required for primary storage.

然而，对于简单网格，仍然需要数据库作为主存储。

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In primary storage, on the other hand, your customer may have some duplicate databases but not much else.

而另一方面，客户可能在主存储中有一些重复的数据库，但却不会太多。

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Beyond that, the big problem is that primary storage has a much lower percentage of duplicate data than backup data.

除此之外，最大的问题是，主存储上重复数据所占的比例要比备份数据要低得多。

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It is generally believed that these cold storage data centers will use HDDs for primary storage rather than magnetic tape.

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The company leverages Flash storage (Fusion-io is a partner) directly on the server itself to provide a shared primary storage infrastructure.

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All tablet computers use solid state memory chips as their primary storage memory since HDD memory generally is comparatively unresponsive and bulky.

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