HP Insight Control - Manual (Page 23)

4 Planning the migration
Planning a migration strategy
One challenge when migrating operating systems, applications, and data is modifying the
migrated operating system to boot on the destination server and to function properly on the
hardware. Insight Control server migration makes the required operating system changes for
you.
To best prepare for a migration, consider developing a migration strategy before running a
migration. Migration strategies vary depending on machine hardware, network landscape, and
applications. To develop a migration strategy, review the following before beginning your
migration.
Preparing a schedule
Schedule preparation is essential when planning a migration strategy.
Be sure to include adequate time for copying data. Large volumes take time to migrate. Under
optimal conditions, 1 GB of data requires two to three minutes to migrate. Using two minutes
as a best-case scenario, migrating 500 GB of data might take more than 17 hours.
When a migration starts, the source server reboots to a minimal configuration so that no updates
occur on the source server during migration. Only those services required for the migration are
enabled.
Applications that normally execute on the server are not available during migration. After the
migration is complete, the source server is restored to its premigration state.
Schedule the migration to occur at a time when the source server can be offline.
Considerations for dual or multi-boot systems
In a dual-boot scenario, where one or more operating systems on the boot disk of the source
server are not supported but the operating systems exist on a supported file system, keep in
mind the following:
• A supported operating system must be set as the default operating system for the boot disk.
• The migration wizard enables the migration of all partitions with supported file systems.
Unsupported operating systems on those partitions are also enabled for migration, but
Insight Control does not support them.
• If unsupported operating systems are migrated, they might be detected, but proper drivers
might not be installed, which can leave the unsupported operating system on the destination
server unbootable.
Migrating Large NTFS Partitions
Insight Control server migration cannot migrate NTFS partitions greater than 1023 GB in size.
Resizing file systems for migration
During the migration progress, you are given the opportunity to resize the data that you are
migrating. There are some file system caveats to be aware of that may affect the migration of
your data.
Resizing Windows file systems
Insight Control server migration supports resizing and migration of NTFS volumes. However,
some conditions may prevent server migration from resizing NTFS partitions:
Planning a migration strategy 23