Two gray rectangles stand upright, side by side, like columns. The left column is labeled "Local Data Center." The right column is labeled "Remote Data Center." Superimposed over these two rectangles are three right-to-left rectangles stacked on top of each other. These icons are effectively rows. The top row is labeled "One-Way," the middle is labeled "Bi-Directional," and the bottom is labeled "Hub-and-Spoke." In the One-Way rectangle, two server icons with attached cylinder icons point right toward a Recovery Appliance. This Recovery Appliance points right toward another Recovery Appliance. In the Bi-Directional row, there are two server icons with attached cylinder icons on the left, and an identical set on the right. Between the two Recovery Appliances is a double-headed arrow. In the Hub-and-Spoke row, there are four server icons with attached database cylinders. The top two servers point right toward a Recovery Appliance. The bottom two servers point right toward a Recovery Appliance. The top Recovery Appliance (in the Local Data Center column) points right toward another Recovery Appliance. The bottom Recovery Appliance (in the Local Data Center Column) points right toward the same Recovery Appliance. In the Remote Data Center column, the recovery server icon points right toward a Tape Library icon.