On Wed, Jan 28, 2004 at 11:10:27PM +1100, [EMAIL PROTECTED] wrote:
> On 28 Jan, Alexander Samad wrote:
> >  1 x external USB2/Firewall HDD (ata-133) casing  ~ $140 
> >  1 x 300GB HD                                                                      
> >   ~ $500 
> >   
> >  You can do a complete backup and because it is an external unit, remove 
> >  it from the machine and store off site. 
> >   
> >  Get 2 or 3.  You have complete maybe even bootable backups of your 
> >  machine. 
> 
> Because it doesn't solve the problem of cycling incrementals losing
> newl-created and damaged files: unless you mean, snapshot into different
> directories each day, and recycle directories every 60 days or
> something.

Plus I am not currently suggesting to doing anything but full backup,
takes about 90 min for me to resync a 120G hd (ata-100 to Firewire) with
raid1

Well I haven't tried it but I believe LVM lets you add and remove files
on the run.  Your process could be each morning.

1) Remove the backup external disk from the LVM set
2) Unplug the disk
3) plug in new disk
4) Add new backup external disk to the LVM

But you are suseptible to file corruption transferring to your backups
so you could use in the morning or at any time

1) attach new backup disk
2) add to LVM set and sync
3) once finished syncing remove backup disk
4) remove backup disk.





> 
> But if it's going to be connected for auto backups overnight, then it's
> also going to be vulnerable to power surges or whatever that take out
> the main drives.  So separate media are more reliable in that sense.

Buy a $200 ups

> 
> For bootable backups I plan to try out mondo recovery, to cover system
> stuff.  I have user data pretty well covered.
If you have LVM'ed your root partition, then you should be able to boot
from the backup disk's


Why not go over the top and turn your garage into a data centre, A/C,
UPS/Power Conditioner/filters.  Run some fibre between the house the garage and then
run some Fibre Channel SCSI raids and mirror them and for add security
if you have a friend who wants to do this within a couple of KM of you,
run the fibre to his place and set up another array.


Key question is how much money do you want to pay, how much is your data
worth!

> 
> luke
> 
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