Microsoft SQL Server Virtual Backup Device Specification
VDS_Command Server Command Inputs
This table provides the server command inputs for VDS_Command.
| Field | Type | Value |
|---|---|---|
| Command Code | UINT32 | This is an operation code. |
| Buffer | PTR | This is a data transfer area. |
| Size | UINT32 | This is the number of bytes to transfer. This field is overloaded for some commands. |
| Position | UINT64 | This is the device position to locate. |
| Completion Routine | PTR | This is a callback function invoked by the completion agent. |
| Completion Context | PTR | This is the context for the completion routine. Its use is decided by Microsoft® SQL Server™. |