Preventing Server Overload

Both Digital ALL-IN-1 and Microsoft Exchange Server use single-instance storage for mail messages ¾ one message addressed to multiple recipients on a server is stored once. However, when users' documents are extracted for migration, each user has a personal copy of each document in the migration files. As a result, more disk space may be required for Microsoft Exchange Server than for Digital ALL-IN-1.

There are several strategies for preventing the volume of migrated materials from overloading Microsoft Exchange Server, as shown in the following table.

Strategy	When	Advantages
Empty wastebaskets on folders in user accounts.	A few days before migration.	Deleted documents aren't migrated.
Have users clean up their folders before migration.	A few weeks in advance, with additional reminders as time to migrate gets closer.	Only users delete mail.
Limit migration to a recent date range.	During the extraction process.	Old documents, including mail in special folders, aren't migrated.
Limit migration to inbox and one special folder.	During the extraction process.	Allows users to put old documents they need in a folder to be migrated. The date range, if used, is applied to both folders.
Migrate accounts only; allow users to forward valuable items to their new mailbox.	During the extraction process, and before the old accounts are removed.	Allows users to migrate valuable data, and speeds the migration process for the administrator.
Migrate accounts only, without migrating file cabinet contents.	During the extraction process.	Users start afresh with Microsoft Exchange Server.

In all these strategies, it is important to let users know which documents are being moved.