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title backupmediaset (Transact-SQL) | Microsoft Docs
ms.custom
ms.date 08/09/2016
ms.prod sql
ms.prod_service database-engine
ms.reviewer
ms.technology system-objects
ms.topic language-reference
f1_keywords
backupmediaset
backupmediaset_TSQL
dev_langs
TSQL
helpviewer_keywords
backup media [SQL Server], backupmediaset system table
backupmediaset system table
ms.assetid d9c18a93-cab9-4db8-ae09-c6bd8145ab8f
author stevestein
ms.author sstein
manager craigg

backupmediaset (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-xxxx-xxxx-xxx-md]

Contains one row for each backup media set. This table is stored in the msdb database.

Column name Data type Description
media_set_id int Unique media set identification number. Identity, primary key.
media_uuid uniqueidentifier The UUID of the media set. All [!INCLUDEmsCoName] [!INCLUDEssNoVersion] media sets have a UUID.

For earlier versions of [!INCLUDEssNoVersion], however, if a media set contains only one media family, the media_uuid column might be NULL (media_family_count is 1).
media_family_count tinyint Number of media families in the media set. Can be NULL.
name nvarchar(128) Name of the media set. Can be NULL.

For more information, see MEDIANAME and MEDIADESCRIPTION in BACKUP (Transact-SQL).
description nvarchar(255) Textual description of the media set. Can be NULL.

For more information, see MEDIANAME and MEDIADESCRIPTION in BACKUP (Transact-SQL).
software_name nvarchar(128) Name of the backup software that wrote the media label. Can be NULL.
software_vendor_id int Identification number of the software vendor that wrote the backup media label. Can be NULL.

The value for [!INCLUDEmsCoName] [!INCLUDEssNoVersion] is hexadecimal 0x1200.
MTF_major_version tinyint Major version number of [!INCLUDEmsCoName] Tape Format used to generate this media set. Can be NULL.
mirror_count tinyint Number of mirrors in the media set.
is_password_protected bit Is the media set password protected:

0 = Not protected

1 = Protected
is_compressed bit Whether the backup is compressed:

0 = Not compressed

1 = Compressed

During an msdb upgrade, this value is set to NULL. which indicates an uncompressed backup.
is_encrypted Bit Whether the backup is encrypted:

0 = Not encrypted

1 = Encrypted

Remarks

RESTORE VERIFYONLY FROM backup_device WITH LOADHISTORY populates the columns of the backupmediaset table with the appropriate values from the media-set header.

To reduce the number of rows in this table and in other backup and history tables, execute the sp_delete_backuphistory stored procedure.

See Also

Backup and Restore Tables (Transact-SQL)
backupfile (Transact-SQL)
backupfilegroup (Transact-SQL)
backupmediafamily (Transact-SQL)
backupset (Transact-SQL)
System Tables (Transact-SQL)