Primary SQL Server: This server fields all requests. Its data are replicated to the High Availability and Disaster Recovery servers. High Availability (HA) SQL Server: This server provides database backup services through synchronous replication. Its data are guaranteed to be consistent with the Primary. It becomes the Primary should the original Primary server fail or become unreachable. Failover to this server is automatic. Disaster Recovery (DR) SQL Server: This server resides at a remote site and provides database backup services through asynchronous replication. It becomes the Primary server should both the Primary and HA server fail or become unreachable. Failover to this server is a manual process. Windows 7 Workstations: Users continue to access the VBECS application using Remote Desktop Services. Figure 12: System Schematic Required Peripherals Table 1 describes additional required hardware. Table 1: Additional Required Hardware Additional Required Hardware Hand-Held 4600 (This is the model distributed with the original VBECS deployment Barcode Scanner and is now discontinued. The successor is the Honeywell Xenon 1900.) Report Printer HP LaserJet 9040dn (sites may elect to use a different report printer) Label Printer Zebra ZM400, Z4MPlus or ZT410; Must print at 300 DPI and have Ethernet connectivity. Printers Report Printer A laser printer capable of printing 8.5" x 11" sheets may be used. VBECS supports duplex printing, but not all printers are duplex capable. Consult the printer documentation to determine if it has this capability. Installing a Printer (Server Administrators Only) To install a printer, execute the following instructions: Copy the printer driver to the C:\temp directory on the app server. Log into the app server with administrative privileges. Click Start, Devices and Printers. The Device and Printers window is displayed (Figure 13). Click the Add a printer button. Figure 13: Example of Devices and Printers, Add a printer
Primary SQL Server: This server fields all requests. Its data are replicated to the High Availability and Disaster Recovery servers. High Availability (HA) SQL Server: This server provides database backup services through synchronous replication. Its data are guaranteed to be consistent with the Primary. It becomes the Primary should the original Primary server fail or become unreachable. Failover to this server is automatic. Disaster Recovery (DR) SQL Server: This server resides at a remote site and provides database backup services through asynchronous replication. It becomes the Primary server should both the Primary and HA server fail or become unreachable. Failover to this server is a manual process. Windows 7 Workstations: Users continue to access the VBECS application using Remote Desktop Services. Figure 12: System Schematic Required Peripherals Table 1 describes additional required hardware. Table 1: Additional Required Hardware Additional Required Hardware Barcode Scanner Hand-Held 4600 (This is the model distributed with the original VBECS deployment and is now discontinued. The successor is the Honeywell Xenon 1900.) Report Printer HP LaserJet 9040dn (sites may elect to use a different report printer) Label Printer Zebra ZM400, Z4MPlus or ZT410; Must print at 300 DPI and have Ethernet connectivity. Printers Report Printer A laser printer capable of printing 8.5" x 11" sheets may be used. VBECS supports duplex printing, but not all printers are duplex capable. Consult the printer documentation to determine if it has this capability. Installing a Printer (Server Administrators Only) To install a printer, execute the following instructions: Copy the printer driver to the C:\temp directory on the app server. Log into the app server with administrative privileges. Click Start, Devices and Printers. The Device and Printers window is displayed (Figure 13). Click the Add a printer button. Figure 13: Example of Devices and Printers, Add a printer
vbecs_2_1_0_tech_security_guide.docx