Endpoint Backup space requirements

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Endpoint Backup space requirements

Veeam Logoby robert » Fri Apr 17, 2015 10:08 am

Let's say I wanted to backup 10 Windows 7 systems 1 per week and retain the last 4 copies.

All Windows 7 systems are identical (service pack level, patch level) and the disk size is 40 GB of which 30 GB is used.

How do I calculate the required disk space for this? The assumption is that I would be using an existing Veeam 8 repository.
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Re: Endpoint Backup space requirements

Veeam Logoby Vitaliy S. » Fri Apr 17, 2015 10:17 am

Do you plan to backup the entire image, volumes or just folders/files?
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Re: Endpoint Backup space requirements

Veeam Logoby robert » Fri Apr 17, 2015 11:28 am

I was planning on an image-backup so as to be able to restore the complete system in case of a disaster.
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Re: Endpoint Backup space requirements

Veeam Logoby Dima P. » Fri Apr 17, 2015 11:45 am

It’s hard to predict since there might be some data with low compression/deduplication ratio, but based on my raw OS backup tests, I can say, its usually a half of the actual size. For instance, clear Win7 install (its somewhere around 20 Gb) backup was about 9-10 gigs and my workstation system volume (~100 Gb) backup is 45 gigs
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Re: Endpoint Backup space requirements

Veeam Logoby robert » Fri Apr 17, 2015 11:54 am

So 15 GB (half of what's used on the disk) times 10 -> 150 GB for the initial backup of all machines. And how much for the additional backups (4 retention points)? The same or less?
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Re: Endpoint Backup space requirements

Veeam Logoby Vitaliy S. » Fri Apr 17, 2015 1:51 pm

Incremental points should be the same, meaning that half of the actual changes (as Dima says).
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Re: Endpoint Backup space requirements

Veeam Logoby robert » Fri Apr 17, 2015 2:56 pm

Let's assume that there are few changes per week (maybe 10%?) 10% of 15 GB would make 1.5. Times 10 (Number of PC's) would be 15 GB. 4 retention points: 4 x 15 GB = 60 GB.

So for 10 PC's 150 GB (initial) and 60 GB (changes) for 4 retention points = 210 GB. I know the numbes are hypothetical but I'm trying to understand the logic.
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Re: Endpoint Backup space requirements

Veeam Logoby Vitaliy S. » Fri Apr 17, 2015 2:59 pm

Yes, that's correct.
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