Effectively,
the migration is performed in groups, whereby a group of 50 user accounts is migrated from LCS
2005 to OCS 2007, and then the client systems are migrated from MOC 2005 to MOC 2007.
Once that grouping of 50 has been migrated, select the next group of 50 users to migrate from
LCS 2005 to OCS 2007, and then migrate those users??™ client software.
This approach of migrating small groups of users to the MOC 2007 client is typically
selected for organizations that expect the migration process to take awhile (i.e., there are
hundreds, if not thousands, of users to migrate). Rather than waiting several weeks or months
until the fi nal user has been migrated, stage the migration such that groups of users can gain
access to the new features of OCS 2007 relatively soon after their account has been migrated
from LCS 2005 to OCS 2007.
Waiting to Migrate to MOC 2007
The other approach is to migrate all accounts from LCS 2005 to OCS 2007, and once all of
the accounts have been migrated, then have a phase in the migration process during which all
of the user systems are upgraded from MOC 2005 to MOC 2007. This method effectively
has the entire organization wait until all LCS 2005 server data has been migrated to OCS 2007,
and then all users are migrated at the same time. This is feasible for an organization with a
limited number of users in which the time it takes to migrate accounts and install the new
MOC 2007 software on client systems isn??™t necessarily lengthy.
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