Database RESTORE WITH VERIFYONLY RESTORE WITH HEADERONLY RESTORE WITH FILELISTONLY BACKUP WITH DIFFERENT DRIVE in SQL Server
When you take backup command with checksum as see below
After that you can check that Backupfile with checksum have valid or not
then you can also view detail information as see below
Also if you had backup with checksum it also works both RESTORE HEADERONLY WITH CHECKSUM & RESTORE HEADERONLY without checksum as see below
Please note the extra time taken for a restore verifyonly with checksum command.
Another observation that may be noted is that a backup without a checksum and a backup with checksum takes about the same time.
Also note that if you did nt use Backup Log with checksum then you cant able to use it on
RESTORE WITH HEADERONLY checksum it will throw error
After that when you mention in RESTORE WITH HEADONLY OPTION it will throw error as see below
But if you are not use with checksum option then it will give result. Because you have to decide before specify you need to take backup with checksum then only you can use it on restore verifyonly option
These same strategy followed on backup as see below
Database backup taken without specify checksum
if you did nt specify with checksum on restore it gives result as see below
As If you specify with checksum it gives error see below
BACKUP FILE STORES WITH DIFFERENT DRIVE:
If you want to take backup on two locations you can specify as see below
BACKUP DATABASE TBK
TO DISK='E:/TBK_bk_Device1E.bak',Disk='F:/TBK_bk_Device2F.bak'
it will save in E Drive and F Drive in local
It saves same 92.5 MB size in both devices
We can also see the mdf and ldf files using backup file as see below
Restore Filelistonly
FROM DISK='E:/TBK_bk_Device1E.bak'
We can also FIRST LSN,LAST LSN,Backp start date and finish date as see below
Restore headeronly
FROM DISK='E:/TBK_bk_Device1E.bak'
We have to verify Database backup is valid and it should be restorable or not using but you need to give all backup file as see below
Restore verifyonly
FROM DISK='E:/TBK_bk_Device1E.bak'-----------you should not give only 1 device location if you saved in 2 locations
So if you give 2 devices it works fine and tells you whether it is valid or not
When you take backup command with checksum as see below
After that you can check that Backupfile with checksum have valid or not
then you can also view detail information as see below
Also if you had backup with checksum it also works both RESTORE HEADERONLY WITH CHECKSUM & RESTORE HEADERONLY without checksum as see below
Please note the extra time taken for a restore verifyonly with checksum command.
Another observation that may be noted is that a backup without a checksum and a backup with checksum takes about the same time.
Also note that if you did nt use Backup Log with checksum then you cant able to use it on
RESTORE WITH HEADERONLY checksum it will throw error
After that when you mention in RESTORE WITH HEADONLY OPTION it will throw error as see below
But if you are not use with checksum option then it will give result. Because you have to decide before specify you need to take backup with checksum then only you can use it on restore verifyonly option
These same strategy followed on backup as see below
Database backup taken without specify checksum
if you did nt specify with checksum on restore it gives result as see below
As If you specify with checksum it gives error see below
BACKUP FILE STORES WITH DIFFERENT DRIVE:
If you want to take backup on two locations you can specify as see below
BACKUP DATABASE TBK
TO DISK='E:/TBK_bk_Device1E.bak',Disk='F:/TBK_bk_Device2F.bak'
it will save in E Drive and F Drive in local
It saves same 92.5 MB size in both devices
We can also see the mdf and ldf files using backup file as see below
Restore Filelistonly
FROM DISK='E:/TBK_bk_Device1E.bak'
We can also FIRST LSN,LAST LSN,Backp start date and finish date as see below
Restore headeronly
FROM DISK='E:/TBK_bk_Device1E.bak'
We have to verify Database backup is valid and it should be restorable or not using but you need to give all backup file as see below
Restore verifyonly
FROM DISK='E:/TBK_bk_Device1E.bak'-----------you should not give only 1 device location if you saved in 2 locations
So if you give 2 devices it works fine and tells you whether it is valid or not
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