134 Managing the PowerVault NX3500Client users access the system through a variety of network topologies.Depending on the physical capabilities of the network infrastructure, thePowerVault NX3500 :• Belongs to all LAN or client subnets. From a performance perspective, thisis the most optimal configuration. In such network configurations, it issufficient to define one client access virtual IP address (VIP) for eachsubnet. For more information, see "Accessing the System" on page 133.• Does not belong to any of the LAN or Client subnets, in which case allclients are considered routed. In such situations, the clients access the datavia a router or layer 3 switches. In such network configurations it isrecommended to define multiple client access virtual IP addresses in a singlesubnet, and provide some mechanism for clients to select an IP address fromthat list (see the following comments regarding DNS configuration).• Belongs to some of the LAN or Client subnets, in which case some clients areflat and some are routed. In such network configurations it is recommended touse both methods described above, and inform the users about the VIPs theyneed to use, depending on whether they are flat or routed.It is recommended to define an entry in the DNS for every subnet that thesystem belongs to, so that clients can access the data without rememberingthe VIPs. If there are multiple VIPs in the subnet, define a single name in yourDNS server that will issue IP addresses from that list in a round-robin fashionand that all the clients can access the system.NOTE: Do not intermix VIPs from different subnets in a single DNS name. For moreinformation on bonding mode and VIP setting, see "Managing Client Access" onpage 123Performance and Static RoutesRouted networks provide another opportunity to enhance performancethrough a feature called static routes. This feature allows you to configure theexact paths in which the system communicates with various clients on arouted network.
