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Need Advice on Large Filesystem Backup
We currently have 3 file-system servers, at the moment they backup up separately and alone with the following sizes:
1013 GB
814 GB
246 GB
Most of the other jobs I have with the smaller servers I have grouped together to get a nice dedupe ratio but I'm worried about these three servers if I group them on the size of that backup file. We also write the files to a tape library every day with Bakbone Netvault.
The backup server is a standalone server running Windows 2008 R2 64bit
Should I group them? How much size do you think I will save? Will I run into problems with that big of a file?
Thanks,
Ryan
1013 GB
814 GB
246 GB
Most of the other jobs I have with the smaller servers I have grouped together to get a nice dedupe ratio but I'm worried about these three servers if I group them on the size of that backup file. We also write the files to a tape library every day with Bakbone Netvault.
The backup server is a standalone server running Windows 2008 R2 64bit
Should I group them? How much size do you think I will save? Will I run into problems with that big of a file?
Thanks,
Ryan
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Re: Need Advice on Large Filesystem Backup
Hi Ryan,
Assuming these servers have random data, you will only save about 10-20GB by grouping them (block occupied by OS files). But since data is typically not random, there will be dedupe between blocks backing actual files to.
I would group them in all cases, yes full backup will take a while, but incremental backups typically fly on file servers with changed block tracking (assuming typical workload I would expect from big file servers, with not too much data changing every day).
Thanks!
Assuming these servers have random data, you will only save about 10-20GB by grouping them (block occupied by OS files). But since data is typically not random, there will be dedupe between blocks backing actual files to.
I would group them in all cases, yes full backup will take a while, but incremental backups typically fly on file servers with changed block tracking (assuming typical workload I would expect from big file servers, with not too much data changing every day).
Thanks!
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Re: Need Advice on Large Filesystem Backup
Thanks for the reply. Do you know if any problems lets say at worse case if I get a 2TB file on the server?
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Re: Need Advice on Large Filesystem Backup
What do you mean?
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Re: Need Advice on Large Filesystem Backup
When I group the servers and back them up I will get (at worse case) a 2 TB .vbk file that I will have to copy to tape. It will be no bigger overall than I currently copy off site it will be just one file. I wasn't sure how windows would handle the 2TB file and if it would cause any problems with it.
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Re: Need Advice on Large Filesystem Backup
Ryan, I'm pretty sure it should work quite well no matter how large your VBK file is, though you should remember about max file limitations for NTFS systems.
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Re: Need Advice on Large Filesystem Backup
Maximum NTFS file size is 16TB.
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