Erik Hjertén <[email protected]> wrote on 05/24/2013 03:40:36 PM:
> Thanks for your thorough reply Timothy.
No problem. BackupPC (well, all system backup) is a *lot* more complex
than people think!
> About 8000 files a photos between 5 and 15 MB each, in total around
> 100 GB. This will perhaps explain the slightly size-per-file
> numbers.
15MB/file is perfectly manageable.
> There are a also few ISO-files around 7 GB, rest is smaller files.
Large files are a hassle to back up. Period. *BUT*: A file that doesn't
change doesn't need to be backed up more than once. So static ISO's are
fine. (Or at least if you change them infrequently.) What is a *major*
issue are large files that change frequently: daily database dumps,
copies of running VM disk images, etc. Each backup becomes a full backup,
and it pretty much destroys pooling. (Yet *another* thing to understand
that I didn't touch on in the original e-mail: how do your file size
*and* usage patters affect pooling? :) )
> I think now SATA drives will do the job. I'll look into costs on
> different drives.
Depending on budget, I'd go with these:
http://www.seagate.com/internal-hard-drives/consumer-electronics/sv35/?sku=ST3000VX000
The 3TB drives (what I use) are twice the price of the 1TB, but you can
*never* have too much storage! :) (But then you get into the decision:
would you be better off with 4 x 1TB than 2 x 3TB for *performance*? :) )
(And while I'm thinking of it: 1TB of total space for 500GB of target
backup space is... interesting. I assume you want more than one backup
for a time-based history? (I usually default to between 12 and 16 copies
to cover 120 or so days of time.) Yes, BackupPC has pooling, but I would
not want to put in a new solution that has a significant amount less than
50% growth capacity on day one...)
Tim Massey
Out of the Box Solutions, Inc.
Creative IT Solutions Made Simple!
http://www.OutOfTheBoxSolutions.com
[email protected]
22108 Harper Ave.
St. Clair Shores, MI 48080
Office: (800)750-4OBS (4627)
Cell: (586)945-8796
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