Léigh i mBéarla Cuir in eagar

Comhroinn trí

sp_addumpdevice (Transact-SQL)

  • Alt

Applies to: SQL Server

Adds a backup device to an instance of SQL Server.

Transact-SQL syntax conventions

Syntax

syntaxsql 
sp_addumpdevice
    [ @devtype = ] 'devtype'
    , [ @logicalname = ] N'logicalname'
    , [ @physicalname = ] N'physicalname'
    [ , [ @cntrltype = ] cntrltype ]
    [ , [ @devstatus = ] 'devstatus' ]
[ ; ]

Arguments

[ @devtype = ] 'devtype'

The type of backup device. @devtype is varchar(20), with no default, and can be one of the following values.

Value Description
disk Hard disk file as a backup device.
tape Any tape devices supported by Microsoft Windows.

Note: Support for tape backup devices will be removed in a future version of SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.

[ @logicalname = ] N'logicalname'

The logical name of the backup device used in the BACKUP and RESTORE statements. @logicalname is sysname, with no default, and can't be NULL.

[ @physicalname = ] N'physicalname'

The physical name of the backup device. @physicalname is nvarchar(260), with no default, and can't be NULL. Physical names must follow the rules for operating system file names, or universal naming conventions for network devices, and must include a full path.

When creating a backup device on a remote network location, be sure that the name under which the Database Engine was started has appropriate write capabilities on the remote computer.

If you add a tape device, this parameter must be the physical name assigned to the local tape device by Windows; for example, \\.\TAPE0 for the first tape device on the computer. The tape device must be attached to the server computer; it can't be used remotely. Enclose names that contain nonalphanumeric characters in quotation marks.

Nóta

This procedure enters the specified physical name into the catalog. The procedure doesn't attempt to access or create the device.

[ @cntrltype = ] cntrltype

Obsolete. If specified, this parameter is ignored. Supported for backward compatibility. New uses of sp_addumpdevice should omit this parameter.

[ @devstatus = ] 'devstatus'

Obsolete. If specified, this parameter is ignored. Supported for backward compatibility. New uses of sp_addumpdevice should omit this parameter.

Return code values

0 (success) or 1 (failure).

Result set

None.

Remarks

sp_addumpdevice adds a backup device to the sys.backup_devices catalog view. The device can then be referred to logically in BACKUP and RESTORE statements. sp_addumpdevice doesn't perform any access to the physical device. Access to the specified device only occurs when a BACKUP or RESTORE statement is performed. Creating a logical backup device can simplify BACKUP and RESTORE statements, where specifying the device name is an alternative using a TAPE = or DISK = clause to specify the device path.

Ownership and permissions problems can interfere with the use of disk or file backup devices. Make sure that appropriate file permissions are given to the Windows account under which the Database Engine was started.

The Database Engine supports tape backups to tape devices supported by Windows. For more information about Windows-supported tape devices, see the hardware compatibility list for Windows. To view the tape devices available on the computer, use SQL Server Management Studio.

Use only the recommended tapes for the specific tape drive suggested by the drive manufacturer. If you're using digital audio tape (DAT) drives, use computer-grade DAT tapes (Digital Data Storage (DDS)).

sp_addumpdevice can't be executed inside a transaction.

To delete a device, use sp_dropdevice or Delete a Backup Device (SQL Server).

Permissions

Requires membership in the diskadmin fixed server role.

Requires permission to write to the disk.

Examples

A. Add a disk dump device

The following example adds a disk backup device named mydiskdump, with the physical name C:\dump\dump1.bak.

SQL 
USE master;
GO
EXEC sp_addumpdevice 'disk', 'mydiskdump', 'C:\dump\dump1.bak';

B. Add a network disk backup device

The following example shows adding a remote disk backup device called networkdevice. The name under which the Database Engine was started must have permissions to that remote file (\\<servername>\<sharename>\<path>\<filename>.bak).

SQL 
USE master;
GO
EXEC sp_addumpdevice 'disk', 'networkdevice',
    '\\<servername>\<sharename>\<path>\<filename>.bak';

C. Add a tape backup device

The following example adds the tapedump1 device with the physical name \\.\tape0.

SQL 
USE master;
GO
EXEC sp_addumpdevice 'tape', 'tapedump1', '\\.\tape0';

D. Back up to a logical backup device

The following example creates a logical backup device, AdvWorksData, for a backup disk file. The example then backs up the AdventureWorks2022 database to this logical backup device.

SQL 
USE master;
GO
EXEC sp_addumpdevice
    'disk',
    'AdvWorksData',
    'C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\BACKUP\AdvWorksData.bak';
GO
BACKUP DATABASE AdventureWorks2022
 TO AdvWorksData WITH FORMAT;
GO

Related content