Traditional server-attached storage
| Approach | Pros | Cons |
| Traditional server- attached storage | Most agencies have the necessary IT skills to manage this common architecture. The broad range of third-party products keeps prices low. | Can be difficult to add new storage to keep pace with fast-growing needs. Server failures disrupt storage availability. |
| Network-attached storage | Can be attached directly to a local-area network wherever storage is needed. Installation typically takes just minutes. | Not ideal for storing transaction-oriented databases. Increases risk of data becoming too decentralized. |
| Storage-area network | Extremely scalable. Provides access between any server and any storage device on the SAN. | Very expensive. Uses Fibre Channel connections, which are unfamiliar to many IT shops. |
| Storage-on- demand product | Agencies pay for storage only when it's needed. Adding storage capacity causes minimal disruption. | Price is slightly higher for the upgrade convenience. Locks agencies into current technology and price for future storage purchases. |
| Storage service provider | Service provider handles storage product acquisition and maintenance. Agencies have a predictable, monthly cost for storage. | Security concerns arise if the service provider stores data off-site at its own facility. Agency IT staff may lose storage-management skills. |
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