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Must LiteSpeed be installed on both backup and restore servers?
설명
Must LiteSpeed be installed on the destination server for a restore? Is a licensed copy of LiteSpeed required for both the backup and restore servers?
해결 방안
The customer does not need to have 2 copies of LiteSpeed to restore on a database that does not have Litespeed.
The extractor is used to restore a LiteSpeed backup to the SQL Server format by stripping the compression and encryption from the backup run by LiteSpeed. Note that the native restore method uses a lot of resources as it does not use compression as LiteSpeed does. Verify there is adequate space on the destination, at least the same size of the original database to be restored.
From the LiteSpeed Help file:
LiteSpeed 2005 Extraction Utility
The extraction utility (extractor.exe) allows you to create Microsoft Tape Format Compliant SQL Server Backup Devices from LiteSpeed 2005 compressed and encrypted backup devices from the Windows NT command line. This utility is run on the server that the LiteSpeed 2005 backup devices are located on.
The devices created by the extractor utility can be restored on any SQL Server using the native RESTORE DATABASE or RESTORE LOG commands.
To run the utility:
Display a command prompt for your operating system. (If the LiteSpeed 2005 installation directory is not placed in the environment PATH) Change the directory until you are in the directory containing extractor.exe. On a default installation this is:
%PROGRAM_FILES%\IMCEDA\LiteSpeed\SQL Server
Run extractor.exe with the appropriate arguments - see below for the command syntax.
An example:
Extract the LiteSpeed 2005 backup �Northwind.bak� to native SQL Server backup �NorthwindNative.bak�: extractor.exe -Fc:\temp\Northwind.bak -Ec:\temp\NorthwindNative.bak -N1 This generates native SQL Server backup files. You can restore from them using native SQL Server RESTORE commands.
The LiteSpeed backup process may have been run with multiple threads, this results in a series of files when extracted. These files are restored with the native commands as a striped backup. Example (LiteSpeed backed up using 3 threads):
RESTORE DATABASE Northwind FROM DISK = disk='d:\backup\NorthwindNative.bak0', disk='d:\backup\NorthwindNative.bak1', disk='d:\backup\NorthwindNative.bak2' WITH RECOVERY
