[linux] backup and storage
elenip at u.washington.edu
Wed Feb 14 15:45:21 PST 2007
Thanks Donald. I just have one more question -
I've tried to set up a cron job to rsync across two machines, but it
won't automatically do it because I need to able to specify
the other machine's root password, so the cronjob fails. I'm sure
there's a way to configure this to work, I'm just not sure
which file I need to edit.
On Feb 14, 2007, at 2:42 PM, Donald J. Ankney wrote:
> It doesn't take a lot of processing power to set up a software raid
> and sync the files. You can use pretty much anything in the P4 class.
> 512 megs of ram is plenty.
> Since the University has a site license for RHEL, why not just use the
> current version? If you're using this for a personal project, you can
> use CentOS, which originated as a free (as in beer as well as speech)
> alternative to RHEL. Personally, I just use tar piped across ssh
> (rsync doesn't work for me as I'm interested in multiple backups with
> so that I can restore to a specific date).
> On Feb 14, 2007, at 2:28 PM, Helen Petropoulos wrote:
>> Hi Alan,
>> That sounds like just the advice that I was looking for, but I was
>> when you say barebones system, what's the minimum processor that I
>> look at? What's the minimum version number of RHLE that I should use?
>> I've worked on Unix systems, but I'm new to Linux and I'm not sure
>> where to look
>> for this kind of information.
>> On Feb 14, 2007, at 1:37 PM, Alan Gibson wrote:
>>> the best solution depends somewhat on what you are trying to achieve.
>>> if you want to archive stuff, dvd may be best. if you just want
>>> redundant backups, i would set up a NAS.
>>> take a cheap barebones system, add a 4 port sata card and 4 250GB
>>> drives. use mdadm to turn the drives into a 1TB raid. then set up an
>>> hourly cron job that backs the whole thing up with rsync. the great
>>> thing about rsync is that it only transfers what has actually
>>> this solution would be cheap, easier to maintain than tape or dvd,
>>> to mention it would be a whole lot faster. if you need more storage,
>>> just put in another sata card and some drives and add them to the
>>> (you might want to pay a little extra for a big power supply).
>>> backing up multiple systems would be trivial; just give the backup
>>> server an account on every system you want to back up and let it go
>>> out and fetch the files.
>>> now if your data is irreplaceable, you should really have multiple
>>> copies, at least one being off site. there is always a chance that
>>> the building will burn down. in this case i would say either add
>>> weekly dvd backups and take them home with you, or sign up for one of
>>> the new remote backup services that are coming online.
>>> On 2/14/07, Helen Petropoulos <elenip at u.washington.edu> wrote:
>>>> I have a DELL PowerEdge 700 running linux and I was wondering what
>>>> of backup system I should obtain for it. I
>>>> would like at least 1 T of storage. Is there something that someone
>>>> out there recommends? Should I get an external
>>>> jukebox? I would also like to be able to back up other machines
>>>> this one.
>>>> Thanks in advance,
>>>> Helen - Dept of Radiology
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