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Disaster Recovery Services: Page 11 of 14

a one-for-one basis, enabling greater flexibility and lowering costs.

• Monitor performance of the replication strategy.

• Test the replication strategy without disrupting normal application or storage operations.

• Secure data during the replication process and after failover of application access to the replicated data set.

• Scale readily in response to increases or decreases in the volume of data to be replicated.

• Cull from replicated data duplicate and/or noncritical data, as well as data or files containing virus signatures or other malicious software code.

• Automate techniques for optimizing data transfers across WAN interconnects of varying bandwidth and for optimizing WAN interconnects for best possible cost efficiency.

Vital Stats

• Darwin's operates 150 minimarts, some of them not so mini, and 10 SuperGigantic stores. Smaller minimarts use VPN connections over the Internet or direct dial-up modem connections to transfer data to HQ. Larger marts and the SuperGigantic locations have dedicated high-bandwidth connections, plus VPNs as a backup.

• All storefronts have centralized servers with NAS arrays for storage. NAS platforms in minimarts have a capacity of about 0.5 TB; in the SuperGigantic sites, capacity is about 1 TB.

• Change data is transferred nightly. On weekdays, about 750 GB of data is transferred; on weekends, about 1.5 TB of data passes between the stores and headquarters. There is no data backup in individual stores.