Microsoft sql server standby database

See, this is not a mandate to create the backup with copy only, I just recommended to do that just to avoid interrupts with the backups of the primary database. There is nothing to worry. In later case , keep the copy of the backup in the backup folder location so that if in any case issue happens you have complete set of backups.

My standby will become primary at cutover time. Are these steps correct? I can manually take t-log backup on primary, then restore it on a standby with recovery option. This will open my database. Just want to confirm one more time. Yep thats correct.. Also make sure to disable the jobs of log shipping. And make sure u use copy only option with backup command. It will not break lsn chain and u will not need to change anything on the primary database. Its the safe approach. Occasionly you may get error if the login with same name exists, you can just ignore that.

Full database backups represent the whole database at the time the backup finished. Differential database backups contain only changes made to the database since its most recent full database backup.

Three recovery models exist: simple, full, and bulk-logged. The recovery model of database determines its backup and restore requirements. Backing up and restoring data must be customized to a particular environment and must work with the available resources. Therefore, a reliable use of backup and restore for recovery requires a backup and restore strategy.

A well-designed backup and restore strategy balances the business requirements for maximum data availability and minimum data loss, while considering the cost of maintaining and storing backups. A backup and restore strategy contains a backup portion and a restore portion. The backup part of the strategy defines the type and frequency of backups, the nature, and speed of the hardware that is required for them, how backups are to be tested, and where and how backup media is to be stored including security considerations.

The restore part of the strategy defines who is responsible for performing restores, how restores should be performed to meet your goals for database availability and minimizing data loss, and how restores are tested. Designing an effective backup and restore strategy requires careful planning, implementation, and testing.

Testing is required: you do not have a backup strategy until you have successfully restored backups in all the combinations that are included in your restore strategy and have tested the restored database for physical consistency. You must consider a variety of factors. These include:. The goals of your organization regarding your production databases, especially the requirements for availability and protection of data from loss or damage.

The nature of each database: its size, its usage patterns, the nature of its content, the requirements for its data, and so on. Constraints on resources, such as: hardware, personnel, space for storing backup media, the physical security of the stored media, and so on.

Ensure that you place your database backups on a separate physical location or device from the database files. When your physical drive that stores your databases malfunctions or crashes, recoverability depends on the ability to access the separate drive or remote device that stored the backups in order to perform a restore. Keep in mind that you could create several logical volumes or partitions from a same physical disk drive. Carefully study the disk partition and logical volume layouts before choosing a storage location for the backups.

Backup and restore operations occur within the context of a recovery model. Server object in the InputObject parameter, either directly or by using the pipeline operator, and the database name in the Database parameter. To back up a database by server instance and database name, specify the server instance in the ServerInstance parameter and the database name in the Database parameter. Database object, specify the Smo.

Database object in the DatabaseObject parameter, either directly or by using the pipeline operator. By default the backup file is stored in the default server backup location under the name databasename. To specify a different file name, use the BackupFile parameter. To specify a backup file location and use an auto-generated file name, specify the location by using the BackupContainer parameter.

The backup file is named 'MainDB. The current working directory is used to determine the server instance where the backup occurs. This command prompts for a password to complete the authentication. The backup file is named "MainDB. To represent this device, the command constructs an instance of the Microsoft. BackupDeviceItem object. The constructor takes two arguments, the name of the backup device and the type of the backup device.

The name of the backup file is auto-generated. The SqlCredential parameter is used to specify the name of the SQL Server credential that stores the authentication information. The backup file names are auto generated.

This example creates the encryption options and uses it as a parameter value in Backup-SqlDatabase to create an encrypted backup. Specifies the folder or location where the cmdlet stores backups. This parameter can be useful when backing up multiple databases in a given instance. This parameter cannot be used with a BackupDevice parameter. The BackupContainer parameter cannot be used with the BackupFile parameter. Specifies the devices where the backups are stored.

This parameter cannot be used with the BackupFile parameter. Use this parameter if you are backing up to tape. Specifies the location and file name of the backup. This is an optional parameter. If not specified, the backups are stored in the default backup location of the server under the name databasename. This parameter cannot be used with the BackupDevice or BackupContainer parameters.

These options only prevent SQL Server from overwriting a file. Tapes can be erased using other methods, and disk files can be deleted through the operating system. For information about how to specify datetime values, see Date and Time Types. If a media password is defined for the media set, the password must be supplied. INIT Specifies that all backup sets should be overwritten, but preserves the media header.

If INIT is specified, any existing backup set on that device is overwritten, if conditions permit. By default, BACKUP checks for the following conditions and does not overwrite the backup media if either condition exists:.

This is the default behavior. FORMAT causes the backup operation to write a new media header on all media volumes used for the backup operation. The existing contents of the volume become invalid, because any existing media header and backup sets are overwritten. Formatting any volume of a media set renders the entire media set unusable. For example, if you initialize a single tape belonging to an existing striped media set, the entire media set is rendered useless.

If it is not specified, or if the SKIP option is specified, there is no verification check of the media name. The supported sizes are , , , , , , , and 64 KB bytes. The default is for tape devices and otherwise. Typically, this option is unnecessary because BACKUP automatically selects a block size that is appropriate to the device. Explicitly stating a block size overrides the automatic selection of block size. You can specify any positive integer; however, large numbers of buffers might cause "out of memory" errors because of inadequate virtual address space in the Sqlservr.

The possible values are multiples of bytes 64 KB ranging up to bytes 4 MB. For more information about using backup compression with TDE encrypted databases, see the Remarks section. These options allow you to determine whether backup checksums are enabled for the backup operation and whether the operation stops on encountering an error.

CHECKSUM Specifies that the backup operation verifies each page for checksum and torn page, if enabled and available, and generate a checksum for the entire backup. This option is accepted by the version for compatibility with previous versions of SQL Server. If percentage is omitted, SQL Server displays a message after each 10 percent is completed. The STATS option reports the percentage complete as of the threshold for reporting the next interval.

These options are used only for TAPE devices. If a nontape device is being used, these options are ignored. You can use this option to help improve performance when performing multiple backup operations to a tape. Keeping the tape open prevents other processes from accessing the tape. For information about how to display a list of open tapes and to close an open tape, see Backup Devices. This option typically affects performance only when writing to tape devices. If you do not want to take log backups, use the simple recovery model.

For more information, see Recovery Models. If the specified file already exists, the Database Engine overwrites it; if the file does not exist, the Database Engine creates it. The standby file becomes part of the database. There must be enough disk space for the standby file to grow so that it can contain all the distinct pages from the database that were modified by rolling back uncommitted transactions. This option allows backing up the log in situations where the database is damaged.

For information about database states, see Database States. Under the full recovery model or bulk-logged recovery model, conventional backups also include sequential transaction log backups or log backups , which are required. Each log backup covers the portion of the transaction log that was active when the backup was created, and it includes all log records not backed up in a previous log backup.

To minimize work-loss exposure, at the cost of administrative overhead, you should schedule frequent log backups. Scheduling differential backups between full backups can reduce restore time by reducing the number of log backups you have to restore after restoring the data. A copy-only backup is a special-purpose full backup or log backup that is independent of the normal sequence of conventional backups.

To avoid filling up the transaction log of a database, routine backups are essential. Under the simple recovery model, log truncation occurs automatically after you back up the database, and under the full recovery model, after you back up the transaction log. However, sometimes the truncation process can be delayed. For information about factors that can delay log truncation, see The Transaction Log. If you are using the full or bulk-logged recovery model recovery and you must remove the log backup chain from a database, switch to the simple recovery model.

A stripe set is a set of disk files on which data is divided into blocks and distributed in a fixed order. The following example writes a backup of the AdventureWorks database to a new striped media set that uses three disk files. After a backup device is defined as part of a stripe set, it cannot be used for a single-device backup unless FORMAT is specified.

Similarly, a backup device that contains nonstriped backups cannot be used in a stripe set unless FORMAT is specified. However, a total of four mirrors is possible per media set. For a mirrored media set, the backup operation writes to multiple groups of backup devices.

Each group of backup devices comprises a single mirror within the mirrored media set. Every mirror must use the same quantity and type of physical backup devices, which must all have the same properties. To back up to a mirrored media set, all of the mirrors must be present. The following example writes to a mirrored media set that contains two mirrors and uses three devices per mirror:.

This example is designed to allow you to test it on your local system. In practice, backing up to multiple devices on the same drive would hurt performance and would eliminate the redundancy for which mirrored media sets are designed.

In a mirrored media set, every mirror must contain a copy of every media family. This is why the number of devices must be identical in every mirror. When multiple devices are listed for each mirror, the order of the devices determines which media family is written to a particular device. For example, in each of the device lists, the second device corresponds to the second media family.

For the devices in the above example, the correspondence between devices and media families is shown in the following table. A media family must always be backed up onto the same device within a specific mirror.