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PurposeThis page is to explain the steps on how to perform a basic backup and recovery. At the end of this guide, there will be frequently asked questions and common problems that are encountered. For an in-depth explanation of the backup and recovery process, please see the Admin guide. System PrivilegesIn order to do a backup, the user will need the following privileges. BACKUP ADMIN or BACKUP OPERATOR. CATALOG READHow to Perform a BackupYou can perform a full data backup through HANA Studio and also through SQL Statements. StudioOpen SAP HANA Studio and on the navigator side (left hand side) expand your system and double click the ‘Backup’ iconPress the 'Backup' button.
By: Updated: 2006-06-05 Related: ProblemHave you ever wished you could get your backups to run faster? Well there may be a way, by writing to multiple files. Creating SQL Server backups is pretty simple to do; you can use the SQL Server management tools or you can use T-SQL commands to issue the backup. But sometimes with large databases it takes a long time to run and it is difficult to copy this very large file across the network or even to your backup tapes.
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SolutionWrite your database backup to multiple files. In addition to writing your database backup to one file you have the ability to write to multiple files at the same time and therefore split up the workload. The advantage to doing this is that the backup process can run using multiple threads and therefore finish faster as well as having much smaller files that can be moved across the network or copied to a CD or DVD.
Another advantage to writing to multiple files is if you have multiple disk arrays you can write your backup files to different arrays and therefore get better I/O throughput. One thing to note is that to maintain the I/O throughput you should keep the writing of your backup files and the reading of the database file on different disk arrays.Here are two ways of writing your backup to multiple files: Backup to multiple files using SQL Server Management StudioIn SQL Server Enterprise Manager you have the ability to add additional destination files. Just click 'Add' and you can add an additional output file. In the example below everything is going to the C: drive, but for faster I/O throughput you would want to write to different drives. BACKUP DATABASE Northwind TODISK = 'C:Northwindfile1.bak',DISK = 'D:Northwindfile2.bak',DISK = 'E:Northwindfile3.bak',DISK = 'F:Northwindfile4.bak'WITH INIT, NOUNLOAD, NAME = 'Northwind backup', NOSKIP, STATS = 10, NOFORMAT Next Steps. Test writing your backups to multiple files to see how much faster you can get your backups to run. Size the backup files for your needs, whether you need to fit them on a CD or DVD or whether you just want to make the copy across your network easier.
To size the file look at the size of the current database backup file and divide it by the size of the files you want to create. See if this makes sense to implement in your environment and then plan to make the change. In addition to doing this using native SQL Server backups, there are several products in the market that allow you to backup to multiple files and compress the files at the same time.
This allows you to have even smaller files and therefore further decrease the time to move the files around your network.Last Updated: 2006-06-05. Monday, June 15, 2015 - 9:19:54 AM - Greg RobidouxAdinarayana, I am not sure if there is any limit to the number of files. How many files were you thinking about writing?Saturday, June 13, 2015 - 10:03:01 PM - AdinarayanaHello,What is the maximum no.of backup files we can mention in split backup? Is there any limitation?Thanks,AdiMonday, November 24, 2014 - 1:27:57 PM - Greg RobidouxHi Jay, I agree if IO is a bottleneck you won't see any speed improvement. The other advantage is multiple smaller backup files instead of one huge file. This could help if there is a need to copy the files. As with most things related to SQL Server, the best answer is to test to see what works best in your own environment.Monday, November 24, 2014 - 11:59:55 AM - jayThere is one thread per physical drive, so i don't know how spliting backups in multiple files is going to help.
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It is myth rather than solution. Split only helps if you have multple physical drives.Sunday, July 13, 2014 - 3:42:29 AM - Kaushikhello I am using MS Sql Server 2005 on XP SP3 with 3 gb Ram Core 2 duo proc And I am facing timout error problem while I try to take backup using command from application. Detail of command is given below:Sql = 'BACKUP DATABASE DBName TO DISK = N'bkFile.bkp' WITH NOFORMAT, INIT, NAME = N'DBName-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10'tCmd.CommandText = SqltCmd.ExecuteNonQueryWhen I call this command I receive an error for server Timout after 20 - 40 percent done - BackUp or Restore terminated'Pl. Notehere I am aking backup from Application.It was working fine earler but when Data grown up to 300 MB i am facing this problem.Thursday, July 25, 2013 - 12:21:55 PM - George@Greg, yes it works!Thursday, July 25, 2013 - 7:24:03 AM - Greg Robidoux@George - to be honest I am not sure, I have never tried.