Windows Server 2008 R2 Editions Windows Server 2008 R2 edition comparison chart

| Features | Foundation | Standard | Enterprise | Datacenter | Itanium |
|---|---|---|---|---|---|
| Maximum RAM on x86-64 | 8 GB | 32 GB | 2 TB | 2 TB | 2 TB |
| Maximum physical s CPU | 1 | 4 | 8 | 64 | 64 |
| Cross-file replication (DFS-R) | No | No | Yes | Yes | Yes |
| Failover cluster nodes (Nodes) | No | No | 16 | 16 | 8 |
| Fault tolerant memory sync | No | No | Yes | Yes | Yes |
| Memory modules: Hot addition | No | No | Yes | Yes | Yes |
| Memory modules: Hot replacement | No | No | No | Yes | Yes |
| CPUs: Hot addition | No | No | No | Yes | Yes |
| CPUs: Hot replacement | No | No | No | Yes | Yes |
| Network access connections: IAS | 10 | 50 | Unlimited | Unlimited | 2 |