Re: [ubuntu-uk] Home networks, running different devices, OSes and backing up

2012-02-07 Thread Tyler J. Wagner
On 2012-02-04 09:39, Byte Soup wrote:
> Id like to hear opinions, experience and advice from those of you who have
> a home network with multiple devices from iPods to PCs, and what you do to
> back them up and centralise the data but also make the data available in
> places where you need it.

I use BackupPC to backup everything. Just run SSHd or Samba on everything,
and configure it to back them up. I back up my Linux PCs from / down,
excepting a few directories that are dynamic or temporary or caches. I back
up my Android devices by installing QuickSSHd and backing up /data,
/sdcard, and /system.

> Also when it comes to backing up, lets say you have a server that runs
> weekly backups of devices on the network, how do you avoid it backing up
> and overwriting a file if a user has infected some files on one of the
> devices with malware? If you have incremental backups, how much more space
> will you need?

With BackupPC, which uses deduplication and compression, it keeps only the
changes. Other incrementals reference the last full. Even the fulls are
pooled so that space is saved. I have found the savings are about 10:1 over
raw copies of the data. For instance, from my home server:

Pool is 149.46GB comprising 1262847 files and 4369 directories (as of
2012-02-07 12:07).

There are 11 hosts that have been backed up, for a total of:

162 full backups of total size 1909.77GB (prior to pooling and compression)
114 incr backups of total size 42.40GB (prior to pooling and compression)

Regards,
Tyler

-- 
"... jingoism, racism, fear, religious fundamentalism: these are the
ways of appealing to people if you’re trying to organize a mass base
of support for policies that are really intended to crush them."
   -- Noam Chomsky, in "Understanding Power"

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[ubuntu-uk] Home networks, running different devices, OSes and backing up

2012-02-04 Thread Byte Soup
Hi Everyone,

Id like to hear opinions, experience and advice from those of you who have
a home network with multiple devices from iPods to PCs, and what you do to
back them up and centralise the data but also make the data available in
places where you need it.

Also when it comes to backing up, lets say you have a server that runs
weekly backups of devices on the network, how do you avoid it backing up
and overwriting a file if a user has infected some files on one of the
devices with malware? If you have incremental backups, how much more space
will you need?

Id just like to hear some ideas as Im sure some folks have some good
suggestions here.

Thanks

Mark
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