Updated: August 4, 2020 (May 15, 2006)
Charts & IllustrationsFour Windows Storage Server Editions
Windows Storage Server 2003 R2 is licensed through OEM partners in four different editions (in order of increasing cost): Express, Workgroup, Standard, and Enterprise. Because the features vary depending on the edition, customers need to pay close attention to which edition they are buying. The table below lists most of the ways the four editions differ.
| Feature | Express | Workgroup | Standard | Enterprise |
| Single Instance Storage (SIS) | Yes | Yes | ||
| Windows SharePoint Services (WSS) | Yes | Yes | ||
| Cluster Services | Yes | |||
| Print server | Up to 5 printers | Unlimited | Unlimited | |
| RAID | Software only | Software or hardware | Software or hardware | Software or hardware |
| SAN storage allowed | Yes | Yes | ||
| iSCSI target1 | Yes | Yes | ||
| File System Resource |
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