Evaluate The Current System Requirements; Pilot Your Installation First; Minimize Unprotected Clients - Symantec 10551441 - AntiVirus Corporate Edition Installation Manual

Evaluate the current system requirements

Pilot your installation first

Minimize unprotected clients

All computers on your network that are part of your migration plan should be
evaluated with regard to the system requirements specified for the upgraded
version of Symantec AntiVirus.
See "Installation requirements"
Do a small-scale installation to identify issues that are likely to occur in the
larger migration. For instance, if a particular software configuration that is
prevalent in your organization causes problems with the installation or
operation of the client, the pilot should expose it. A good pilot candidate is the IS
or support department. These departments usually have advanced users who
will need to be familiar with the client at the start of the installation.
If the migration entails the removal of existing antivirus software, there will be
a short period of time when some clients are unprotected. You can minimize
your exposure by staging the migration, and by trying to roll out as soon as
possible after the previous antivirus software removal. Also, make sure that all
of your servers, including GroupWare servers, are protected during this period.
This will keep incidents isolated to a single computer.
Best Practice: Organize your clients into logical client groups
to employ a multi-tiered rollout
When you are upgrading the clients and servers on your network to the current
version of Symantec AntiVirus, you should organize your network into
temporary groups that divide your network into logical deployment tiers. For
example, you can create one group that is managed by a legacy Symantec
AntiVirus Corporate Edition parent server and a second group that will be
upgraded immediately to the current version. Once you have deployed the
installations for the initial migrating group and tested that segment of your
network, you can then upgrade the legacy group to bring your entire network up
to the current version. If you organize your clients in this way, you can roll out
installations incrementally, which helps to minimize the risk of a security
breach.
Migrating to the current version of Symantec AntiVirus
on page 69.
Creating migration plans
79