188 Implementing NFSv4 in the Enterprise: Planning and Migration Strategies
Switch-over migration
If the intention is to migrate all data and user accounts simultaneously, it will be
necessary to create a full backup of all data immediately prior to commencement
of migration activities. All users must be barred from logging in during this
process, and all files slated for movement must be closed in order to eliminate
the possibility of inconsistency. It is then a matter of moving the data to newly
created NFSv4 file systems.
Phased
This option can be ideal in situations where immense amounts of data are
involved because it offers the option of planning multiple, short, off-peak outages
for specific groups. Here again, a full data backup of all ...