| Feature | Enterprise | Standard |
| Server core support1 | Yes | Yes |
| Log shipping | Yes | Yes |
| Database mirroring | Yes | Yes |
| Full safety only | ||
| Backup compression | Yes | Yes |
| Database snapshot | Yes | Yes 3 |
| Always On failover cluster instances | Yes | Yes |
| Number of nodes is the operating system maximum | Support for 2 nodes | |
| Always On availability groups | Yes | No |
| Up to 8 secondary replicas, including 2 synchronous secondary replicas | ||
| Basic availability groups 2 | No | Yes |
| Support for 2 nodes | ||
| Online page and file restore | Yes | No |
| Online indexing | Yes | No |
| Online schema change | Yes | No |
| Fast recovery | Yes | No |
| Mirrored backups | Yes | No |
| Hot add memory and CPU | Yes | No |
| Database recovery advisor | Yes | Yes |
| Encrypted backup | Yes | Yes |
| Hybrid backup to Windows Azure (backup to URL) | Yes | Yes |
Logged operations are replicated. These include, but are not limited to: DDL DML Create/alter table space Create/alter storage group Create/alter buffer pool XML data. Logged LOBs Not logged operations are not replicated. These include, but are not limited to: Database configuration parameters (this allows primary and standby databases to be configured differently). "Not logged initially" tables Not logged LOBs UDF (User Defined Function) libraries. UDF DDL is replicated. But the libraries used by UDF (such as C or Java libraries) are not replicated, because they are not stored in the database. Users must manually copy the libraries to the standby. Note: You can use database configuration parameter BLOCKNONLOGGED to block not logged operations on the primary.
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