Computer Associates BABWBR1151S40 User Guide - Page 14

How the Agent Backs Up and Restores Exchange Server Data, No Single Instance Storage

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How the Agent Backs Up and Restores Exchange Server Data The backup and restore products that you can use to protect your Exchange Server support varying levels of Exchange Server's Single Instance Storage: ■ No Single Instance Storage--Without Single Instance Storage, an Exchange Server is scanned mailbox-by-mailbox and copies of individual message bodies and attachments are backed up as they arrive, without any regard for data that may have been backed up already. ■ Partial Single Instance Storage--Partial Single Instance Storage support backs up attachments only once, but continues to back up other message components, like message bodies, every time they are referenced. This translates into large amounts of unnecessary backup duplication because most messages do not include attachments, but all messages include message bodies and other message components. ■ Complete Single Instance Storage--Complete Single Instance Storage checks to see whether each attachment, message body, and other single instance components of a message have been backed up already, and backs up only one copy. This is the fastest and most efficient solution because it removes unnecessary backup duplication and maximizes performance. Document Level backup and restore supports Complete Single Instance Storage. How the Agent Backs Up and Restores Exchange Server Data The Agent for Microsoft Exchange integrates with CA ARCserve Backup to let you back up and restore Exchange Server databases and database components (such as mailboxes). It also integrates with the Exchange Server's backup and restore functions, enabling you to perform online backups. The agent offers many benefits, such as: ■ Manage backups of Exchange Server databases, mailboxes, and public folders from a remote location. ■ Perform online database backups using Exchange Server's backup and restore APIs. Note: For Exchange Server 2000 and Exchange Server 2003, Exchange Server streaming backup APIs are used. For Exchange Server 2007, Volume Shadow Copy Service (VSS) APIs are used. 14 Agent for Microsoft Exchange Guide

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How the Agent Backs Up and Restores Exchange Server Data
The backup and restore products that you can use to protect your Exchange
Server support varying levels of Exchange Server’s Single Instance Storage:
■
No Single Instance Storage--
Without Single Instance Storage, an
Exchange Server is scanned mailbox-by-mailbox and copies of individual
message bodies and attachments are backed up as they arrive, without
any regard for data that may have been backed up already.
■
Partial Single Instance Storage--
Partial Single Instance Storage
support backs up attachments only once, but continues to back up other
message components, like message bodies, every time they are
referenced. This translates into large amounts of unnecessary backup
duplication because most messages do not include attachments, but all
messages include message bodies and other message components.
■
Complete Single Instance Storage--
Complete Single Instance Storage
checks to see whether each attachment, message body, and other single
instance components of a message have been backed up already, and
backs up only one copy. This is the fastest and most efficient solution
because it removes unnecessary backup duplication and maximizes
performance.
Document Level backup and restore supports Complete Single Instance
Storage.
How the Agent Backs Up and Restores Exchange Server
Data
The Agent for Microsoft Exchange integrates with CA ARCserve Backup to let
you back up and restore Exchange Server databases and database
components (such as mailboxes). It also integrates with the Exchange Server's
backup and restore functions, enabling you to perform online backups.
The agent offers many benefits, such as:
■
Manage backups of Exchange Server databases, mailboxes, and public
folders from a remote location.
■
Perform online database backups using Exchange Server's backup and
restore APIs.
Note:
For Exchange Server 2000 and Exchange Server 2003, Exchange
Server streaming backup APIs are used. For Exchange Server 2007,
Volume Shadow Copy Service (VSS) APIs are used.
14
Agent for Microsoft Exchange Guide