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Backup Exec 2010 R3 - Disk to Disk to Tape with Dedupe option - Best Practices

Posted on 2011-09-14
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Hi,

I'm new to BackupExec 2010 and I'm trying to setup a backup strategy for my company's file server.

I have a DELL R710 server with 5.5TB storage capacity, runing Windows 2008 Server x64 and BackupExec 2010 R3 with Dedupe option. I have 4 x 2TB hard drives on RAID 5, and this same logical drive will store both my file servers data AND the Deduplication Folder, which i know is far from being ideal, but due to budget constraints, we could not purchase external disk array storage. (perhaps we will next year). I also have a SAS DELL PV124T connected, and 7 LTO5 tapes loaded and ready to go.

I have to create a backup strategy that backs up from Disk to Disk to Tape, and i would like to know what are the best practices for doing so. I've been doing a lot of googling on the subject.
At the moment my storage requirements are to backup 1.5TB of data from the file server.

Our requirement are as follows:
- Full Backup on Friday, and Incremental for the rest of the week DEDUPED
- Full Backup to tape everyday DUPLICATED
- Each slot on the autoloader should be dedicated to one tape ONLY (for now)

What i've done so far is create partitions on the tape for each slot, so that a backup does not overflow into the next tape.
I've also created seperate media sets for each day's backup (so 7 media sets in total)

So now I've come to main point of actually creating the job and I thought I'd just ping the community for some advice. I've seen some info on creating templates and policies. What would be ideal would be a job that runs the disk to disk dedupe everynight (FULL/INCREMENTAL) automatically followed by a job that run disk to tape duplicated (FULL ONLY). I'm not entrirely sure if this is possible, and if not, we can live with having DUPLICATE incremental to tape.

Appreciate the help.

CV
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Question by:connelvalentine
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Tony J earned 2000 total points
ID: 36534902
I'd like to throw something else into the mix here too that you may find interesting - synthetic backup (sorry - I'm not sure which license is required for this, or if you'll have it but I seem to recall it was the advanced open file):

http://www.symantec.com/business/support/index?page=content&id=HOWTO21791

These can help you I think, by bringing down your full backup window massively (and the amount of data this actually backs up)

You can, I believe, use dedupe backing up to disk (in fact, I seem to remember that BE2010 _requires_ disk to do dedupe).

Lots of best practices just for dedupe here:

http://www.symantec.com/business/support/index?page=content&id=TECH140383

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by:connelvalentine
ID: 36541615
Thanks Tony for your links, they were certainly helpful.

I'm still struggling in terms of understanding the relation between MEDIA and Deduplication.

I've run some DEDUP jobs now, and it's created a whole mess of media, labelled OST000000##, where ## seems to be a running serail number.

Ideally, i'd like my media list to be clean and labelled. I have created a media set for each day of the week:
Friday Full
Sat Incr
Sun Incr
Mon Incr
....and so on.

For testing purposes, i've set the retention and append period to 0, and set it to allow overwrite. I theory, i would think that this means that no matter how many times i run the job, it will always use the same media. I'm just backing up 10GB for now for testing

When i first ran the dedup job, it created a couple of media as stated above. I associated each of them to a media set. When i ran the same job again, i assumed it would just use the same media to backup to. Instead it just created more media.

Also, the other thing i notice is that each media states that it has a capcity of 10GB. I'm assuming this comes from the default setting of "Spluit Data Stream every 50GB".

Ideally, I'd like my disk storage media to be as orgnaized as my tape storage. Any advice on how i can best handle media when it comes to dedupe storage folder?

Best Regards, CV
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