Josh Condie - Microsoft Exchange Online Archiving is a cloud-based, enterprise-class archiving solution for organizations that have deployed Microsoft Exchange Server 2010 on-premises. Exchange Online Archiving assists these organizations with their archiving, compliance, regulatory, and e-discovery challenges while simplifying their on-premises infrastructure, thereby saving costs and easing the information technology (IT) burden.

This document gives IT professionals an overview of the capabilities of the Exchange Online Archiving service.

 

Features:

Archive Size Limits

A Exchange Online Archiving user receives unlimited storage in the personal archive. A quota is set on the personal archive for Exchange Online Archiving users that is large enough to accommodate and enforce reasonable use, including the import of one user’s historical email.

Deleted Item Recovery

Exchange Online Archiving enables users to restore items they have deleted from any email folder in their archive. When an item is deleted, it is kept in a archive’s Deleted Items folder. It remains there until it is manually removed by the user, or automatically removed by retention policies.

Deleted Mailbox Recovery

When administrators delete users from the on-premises Exchange Server, the users’ archives are also deleted. If the deleted archive mailboxes need to be recovered, the Office 365 support team can perform this recovery. A recovered archive will contain all of the mail stored in it at the time it was deleted.

Mailbox Backup

Archive mailboxes in Exchange Online Archiving are replicated to multiple database copies, in geographically dispersed Microsoft data centers, to provide data restoration capability in the event of a messaging infrastructure failure. For large-scale failures, business continuity management is initiated.

 

Security and Compliance

In addition to these features EOA offers are rich set of Compliance and Security features:

  • Retention Policies
  • Rolling Legal Holds
  • Multi-Mailbox Search
  • Archive Delegate Access
  • TLS, S/MIME, PGP, SSL and IRM-enforced Encryption options

 

Here is a comparison with Exhange Hosted Archive (EOA vs. EHA):

Table 4. Exchange Online Archiving comparison with Exchange Hosted Archive

 

Exchange Online Archiving

Exchange Hosted Archive

SERVICE FEATURES

 

 

Deleted item recovery

14 days

No

Deleted mailbox recovery

30 days

No

TLS for server connections

Yes

Yes

Password synchronization

Yes

No

CLIENT ACCESS

 

 

Outlook 2010

Yes

No

Outlook 2007

Yes

No

Outlook Web App

Internet Explorer 7 or later, Safari 3 or later, Firefox, Chrome

Internet Explorer 6, Internet Explorer7, Firefox 2 or later

Delegate access

Yes

Yes

ARCHIVING

 

 

Personal archive

Yes

No

Accept journaled content

No

Yes

Content type: Instant messaging

Yes

Yes

Content type: Calendar

Yes

No

Content type: Contacts

Yes

No

RETENTION

 

 

Retention policies

Yes

Yes

Archive mailbox size

Unlimited

Unlimited

Legal hold

Yes

Yes

Rolling Legal Hold (Single Item Recovery)

Yes (Unlimited)

Yes (10 year max)

Self-service Historical Data Load (HDL)

Yes

No

DISCOVERY

 

 

Unified user search

Yes

No

Export to PST file

Yes

Yes

Auditing

Yes

Yes

Multi-mailbox search (e-discovery)

Yes

Yes

De-duplication of data

Yes

Yes

Rights-protected discovery

Yes

Yes

Attachment discovery

Yes

Yes

ADMINISTRATION

 

 

Administration through a web-based interface

Yes

Yes

Administration through EMC

Yes

No

Administration through command line shell

Yes

No

RBAC

Yes

No

APPLICATION ACCESS/CUSTOMIZATION

 

 

Application connectivity through web services

Yes

No

Outlook Web App Web Parts

Yes

No

Outlook add-ins and Outlook MAPI

Yes

No

 

 

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