Lion Server – Software Update Server

Yesterday, many Mac system administrators learned on Twitter of an urgent change arriving to their servers leaving less than 24 hours until the expiration day for Apple’s certificate used to sign updates. This change affects a tool that gets little fanfare and is deeply buried as one of 20+ items that Profile Manager can do. Although a Software Update Server (SUS) can normally be set up once and mostly forgotten, but doing so can save money, conserve bandwidth, reduce support tickets, and make a company’s Macs more stable.

The Software Update service allows all the Macs to get Apple software updates from a local server rather than having to use the public servers that Apple runs. This is a huge benefit, saving bandwidth on both Apple’s and the business’s ends, since each update gets downloaded once instead of for every computer. Also, when a company wants to test updates before they hit all their hundreds (or thousands) of computers, SUS allows those Mac administrators to release updates after they have been tested to avoid disrupting their colleagues with update conflicts interacting with other business critical software that could have been caught with some testing. more »