| Specification | Web | Standard | Enterprise | Datacenter | Itanium | Foundation | HPC |
|---|---|---|---|---|---|---|---|
| Cross-File Replication (DFS-R) |
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|
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| Failover Cluster Nodes (Nodes) |
|
|
16 | 16 | 8 |
|
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| Fault Tolerant Memory Sync |
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| Hot Add Memory |
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| Hot Add Processors |
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| Hot Replace Memory |
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| Hot Replace Processors |
|
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| IA64 RAM |
|
|
|
|
2 TB |
|
|
| IA64 Sockets |
|
|
|
|
64 |
|
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| Network Access Connections (IAS) |
|
50 | Unlimited | Unlimited | 2 | 10 |
|
| Network Access Connections (RRAS) |
|
250 | Unlimited | Unlimited |
|
50 | 250 |
| Remote Desktop Admin Connections | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Remote Desktop Services Gateway |
|
250 | Unlimited | Unlimited |
|
50 |
|
| Virtual Image Use Rights | Guest | Host + 1 VM | Host + 4 VM | Unlimited | Unlimited |
|
Host + 1 VM |
| X64 RAM | 32 GB | 32 GB | 2 TB | 2 TB |
|
8 GB | 128 GB |
| X64 Sockets | 4 | 4 | 8 | 64 |
|
1 | 4 |
