McAfee AVDCDE-AA-AA User Guide - Page 324

Understanding iDAT Technology Corrupted data Q: What happens if one of the iDAT files is corrupted during download? A: Before the AutoUpdate utility installs any iDAT file, it checks the file against a verification checksum recorded in the DELTA.INI file. If the checksums do not match, the utility does not install that iDAT file or any subsequent files it downloads in that session. Instead, the utility will display an error message, then will download a full .DAT file set to update your software. Incremental vs. full .DAT update Q: What happens if my existing .DAT files are very old? Will incremental .DAT file updating still work? A: The AutoUpdate utility decides which process to use. It downloads iDAT files only if your existing .DAT file set is no more than 15 weeks out of date. After that point, it becomes more efficient to download a full .DAT file set. Network configuration issues Q: Do all the machines I want to update need to be able to connect to the Internet? A: No. You can configure one computer on your network to download the iDAT files from the Internet, then have other computers on your network download their files from this computer. To learn more, see "Three-stage updating" on page 322. Q: How can I prevent network bottlenecks when I update many workstations? A: The AutoUpdate Task Properties dialog box has a randomization feature you can use to spread the network load. To learn how this works, see "Enabling tasks" on page 204. Scheduling issues Q: How often should I check for updates? A: Normally, McAfee posts updated .DAT files on a weekly basis. You may, however, check more or less often as your network security needs require. Be aware that your risk of virus infection grows as the period between updates to the virus data files grows. 324 McAfee VirusScan Anti-Virus Software