Veritas Storage Foundation Portable Data Containers: Cross-Platform Data Sharing 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

Note that the CDS facilities do not convert the end user data. The data is
uninterpreted by the file system. Only individual applications have knowledge of
the data formats, and thus those applications and end users must deal with this
issue. This issue is not CDS-specific, but is true whenever data is moved between
different types of systems.
Even though a user might have a file system with data that cannot be readily
interpreted or manipulated on a different type of system, there still are reasons
for moving such data by using CDS mechanisms. For example, if the desire is to
bring a file system off line from its primary use location for purposes of backing
it up without placing that load on the server or because the system on which it
will be backed up is the one that has the tape devices directly attached to it, then
using CDS to move the file system is appropriate.
An example is a principal file server that has various file systems being served
by it over the network. If a second file server system with a different operating
system was purchased to reduce the load on the original server, CDS can migrate
the file system instead of having to move the data to different physical storage
over the network, even if the data could not be interpreted or used by either the
original or new file server. This is a scenario that often occurs when the data is
only accessible or understood by software running on PCs and the file server is
UNIX or Linux-based.
File system migration
File system migration refers to the system management operations related to
stopping access to a file system, and then restarting these operations to access
the file system from a different computer system. File system migration might
be required to be done once, such as when permanently migrating a file system
to another system without any future desire to move the file system back to its
original system or to other systems. This type of file system migration is referred
to as one-time file system migration. When ongoing file system migration between
multiple systems is desired, this is known as ongoing file system migration.
Different actions are required depending on the kind of migration, as described
in the following sections.
Specifying the migration target
Most of the operations performed by the CDS commands require the target to
which the file system is to be migrated to be specified by target specifiers in the
following format:
File system considerations
File system migration
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