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Backup to disk best practices

Posted on 2007-12-06
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I am looking for some input on best practice methods of using backup to disk. In specific Symantec Backup exec 10 and 11.
I am use to using an Ultrium 3 autoloader and partitioning the drive based on days for nightly full backups. I am in the process of testing backup to disk and WAN replication to remote offices.

I have been allocated 1.2TB of disk space for the backup disks and our backups if a full on all servers will be just over 800GB.
Should I create 1 folder for the backup to disk and have the Full backup run and then the incrementials or differential backup to the same "device"? Or should I be creating multiple folders for each day?

The devices we are using are Data Domain DD510s just incase someone has experience with this device. They are suppose to be able to compress and de-duplicate on the fly.
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Question by:Templar_m
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cgordon81 earned 2000 total points
ID: 20425390
To answer your main question, you should have multiple folders.  You should have a full backup folder.  And then another for dailies.  You don't want a folder for each day. Keep it simple and create a daily folder and do differentials and append to that device.  Make sure to set your append / overwrite protection period correctly so you don't run out of space.  I'm a bit concerned if you have enough space though.

The partitioning is a good idea if your using device pool for your tapes.  This is nice especially if you need muliple tapes for a backup.  I'm not sure if you have enough disk space though.  You need to analyze how much your data is changing, or maybe you are aware.  There is some way cool stuff you can do in backup exec.  I'd reccomend  Purchasing the ADBO option if you don't have it (advanced disk backup option) which will allow you to do synthetic backups.  If your not familiar it is the concept of doing a full backup and then doing an incremental daily or however often you choose, and then at whatever time interval you specify it can combine the incrementals to create a full backup.  This does however only work on disk or with two identical tape drives (wouldn't reccomend doing via tape drives alone).  The actual creation of the full backups occour on the media server only.  This will minimize the amount of time you have to go out hit the servers with a backup using CPU cycles, memory, disk I/O, etc.    Also what kind of DR policies do you have to adhere to, do you have any retention policies, etc.  

That's probably OK
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