|
Feature Name
|
Enterprise
|
Standard
|
Workgroup
|
Web
|
Express
|
Express Tools
|
Express Advanced
|
|---|
|
Multi-instance support
|
50
|
16
|
16
|
16
|
16
|
16
|
16
|
|
Online system changes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
|
Backup log shipping
|
Yes
|
Yes
|
Yes
|
Yes
|
|
|
|
|
Database mirroring2
|
Yes (full)
|
Yes (safety full only)
|
Witness only
|
Witness only
|
Witness only
|
Witness only
|
Witness only
|
|
Failover clustering
|
Operating system maximum1
|
2 nodes
|
|
|
|
|
|
|
Dynamic AWE
|
Yes
|
Yes
|
|
|
|
|
|
|
Failover without client configuration
|
Yes
|
Yes
|
|
|
|
|
|
|
Automatic corruption recovery from mirror
|
Yes
|
Yes
|
|
|
|
|
|
|
Database snapshots
|
Yes
|
|
|
|
|
|
|
|
Fast recovery
|
Yes
|
|
|
|
|
|
|
|
Online indexing
|
Yes
|
|
|
|
|
|
|
|
Online restore
|
Yes
|
|
|
|
|
|
|
|
Mirrored backups
|
Yes
|
|
|
|
|
|
|
|
Hot add memory
|
Yes
|
|
|
|
|
|
|
|
Online configuration of P2P nodes
|
Yes
|
|
|
|
|
|
|
|
Hot add CPU
|
Yes
|
|
|
|
|
|
|
|
Backup compression
|
Yes
|
|
|
|
|
|
|
1
Windows Server 2003 supports a maximum of 8 failover cluster nodes. Windows Server 2008 supports a maximum of 64 failover cluster nodes.