Compaq reports that as much as 40 percent of its company data changes every month. To restore a system after a disaster, you need to back up all data and programs and determine whether certain users or groups have special backup needs. For example, an accounting group may require data backups beyond the regularly scheduled full-system backups. When a power interruption turns off or resets a computer, you can lose cached information and potentially corrupt data. Because the server processes most data on the network, any power fluctuations can adversely affect data flow to and from client workstations.
Most system administrators equip critical servers with UPSs in case of a power failure.
So, you need UPSs at client workstations. This way, if you lose power, you have time to save active files and do an orderly shutdown. Redundant Systems With availability solutions, two are always better than one. Redundancy lets a system gracefully handle a failure in any component for which a duplicate is available. Sophisticated systems use the duplicate component to balance the processing load until a failure occurs.