Why Is Simply Copying The Mdf/ldf Files NOT A Good Way To Backup?

Mar 12, 2008

Hi.

What I want to know is what the issues/scenarios are of only using copies of mdf/ldf files as backups.

TIA.

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Copying Backup Files To Different Locations

Oct 25, 2007

I have a maintenace plan that copies production backup files in DR server. The production is mission critical and runs 24/7. We have a round the clock backups. Backups include full backup, differential backups and log backups.

To secure these backup files, I was asked to keep these files in different server at the same time as it goes to DR Server. As I am using maintenace plan for scheduled backups that go to DR server and I had no idea how to incorparate copying these files to another server in the same maintenence plan. I came up with idea using xp_cmdshell stored proc that I attached on the maintenace plan in executeT-SQL statement task. The statement looks like


Exec master..xp_cmdshell 'copy e:DRbackup*.bak \fgh-sql16ackup$'

Above statement copy all backup files on DR server and takes these to remote server called fgh-sql16.

My question here is ....are there any other effective methods to copy backup files simultaneously to different servers via maintenace plan.

Thanks all

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Sep 12, 2007



I have inherited some responsibilities for which I'm not really qualified, so I'll push on through and maybe not totally fall down.

Assume 10 50GB databases, each in a single MDF file. All these MDF files reside on the C drive (the only drive on the system), running SQL 2005 in a 32-bit Windows 2003 or later, 8GB RAM.

The C drive is 6 physical disks in RAID 5, say about 1.0 TB or so. We have 4 dual-core processors on the box.

We have limited simultaneous users, initally about 8 users doing very heavy write on all tables in any one database. Later, we have about 15 users connecting via Web interface, and doing very heavy read and light writing. Each of the 10 or so database has this lifecycle: Heavy write for about 2 weeks (load data) then heavy read for about 1 month (research and search data), then nothing ever again (db is taken offline).

Of course, this is not enough information to go on, but let's just go on it anyway.

My TempDB, Log (simple recovery), Index etc is all on the same RAID 5 drive (C).

I have two basic questions I'd love to hear feedback on:
1. Is there any real advantage to creating 8 Data files for my database (one per processor core)?
2. Given that the hardware people here REALLY don't want to change anything, what should I fight for first:

a. Separate drive for LOG files?
b. Separate drive for TempDB?
c. Something else


Thanks in advance.

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Mutiple Backup Is Good Choice?

Feb 9, 2008



Hi,

I am using a stored procedure to take backup of my database from the Visual Basic Programming.

Before i posted one of my thread with the same thing, so i was recommended to go through with DMOSQL do deal with SQL server with Visual Basic Programming. For me, this takes some time to understand the complete concept.

Because of urgent i am using stored procedure to take backup with the following:

---------------------------------------------------------------------------------------
ALTER PROCEDURE dbo.BackUPBLMSDB

(
@RP nvarchar(200)
)

AS

declare @backupfilename nvarchar(200)
set @backupfilename=@RP
BACKUP DATABASE [BLMSDB] TO DISK = @backupfilename WITH NOFORMAT, NOINIT, NAME = N'BLMSDB-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10
---------------------------------------------------------------------------------------
Example @RP="D:ackupBackup-1 09-02-2008 11-24"


Every time i am passing a parameter with somename and dateandtime(System).
Example

Backup-1 09-02-2008 11-24 2900KB
Backup-1 09-02-2008 12-30 2900KB
Backup-1 09-02-2008 18-10 5400KB
Backup-1 09-02-2008 22-00 2900KB
Backup-1 09-02-2008 22-00 2900KB

I would like to clear my doubt, is it a good practice to take backup with different names. The above one i store four backups . If the system crashes and i created the new database with the same schema without any data present in the tables, can i restore previous backup database to the newly created database.

Moreover, The first two backups contains "2900KB", the third one is "5400KB" after the data is being modified. Look at the fourth one it is "2900KB". Why the size is being reduced to "2900KB" after taking backup eventhough i didn't delete or added data into the database.



Hope you will solve my problem.

Thanks.



Best Regards,
Kashif Chotu





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Hi,
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thanks

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