[143642] in North American Network Operators' Group
Re: personal backup
daemon@ATHENA.MIT.EDU (Jake Khuon)
Sat Aug 13 11:24:53 2011
From: Jake Khuon <khuon@NEEBU.Net>
To: Joe Greco <jgreco@ns.sol.net>
In-Reply-To: <201108131413.p7DEDdu5069168@aurora.sol.net>
Date: Sat, 13 Aug 2011 08:24:08 -0700
Cc: North American Network Operators' Group <nanog@nanog.org>
Reply-To: khuon@NEEBU.Net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sat, 2011-08-13 at 09:13 -0500, Joe Greco wrote:
> We used to use DVD's for off-site backup, but that's not been the best
> of solutions. I've been experimenting with external hard drives but
> I am less comfortable with them; I've seen too many drives fail. The
> idea of letting them sit for awhile and praying they spin up later
> bothers me. :-)
I can understand that. That's why I use a rotation and retention system
as well as two NASes syncing to one-another with the backups being
performed from the second NAS. I treat them like I used to treat tape.
The onsites contain nightly incrementals as well as weekly full dumps.
These drives are rotated every week. Every month a copy of the latest
full dump is copied to another set of drives which are sent to offsite
storage. I keep two copies offsite. To implement this, I need a
minimum of nine USB drives. I actually have 10 so I can have an extra
one onsite as a hardware replacement-spare.
Online Nearline Onsite Offsite
Storage Backup Backup Backup
----------------------------------------------
[USB7]<--{[USB5],[USB6]}
| ^
V |
[USB8] |
| |
V |
[NAS1]>>>>>[NAS2]>>>>>[USB0]>>>{[USB3],[USB4]}
|
V
[USB1]
|
V
[USB2]
Nothing's perfect. There's still risk but there's some amount of
assurance.
--
/*=================[ Jake Khuon <khuon@NEEBU.Net> ]=================+
| Packet Plumber, Network Engineers /| / [~ [~ |) | | -------- |
| for Effective Bandwidth Utilisation / |/ [_ [_ |) |_| NETWORKS |
+==================================================================*/
