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Followup: coraid

Karl-Heinz Herrmann [kh1 at khherrmann.de]


Thu, 7 Feb 2008 16:18:30 +0100

Hi Ramon,

I didn't get round to discuss much of what you wrote with Daniel (Main Admin around here). He keeps himself busy with fixing multiseat machines which got broken by upgrades.... As a first decision we are going to put out an order for a large disk-raid system (max 24TB, initially 18 for budget reasons) which we'll run as NFS fileserver and it will have to double as backupsystem (two independent raid controllers) backing itself up, configs from all clients and some smaller data amounts on local disks plus homes on the then old fileserver.

If that disk space runs full we'll have hopefully new budget and can think about tape solutions etc. Right now raw disc space is getting scarce.

The number crunchers are still not quite certain --- the Multicore AMD is still on the wishlist, but delivery seems to be postponed and postponed again.

> If you're willing, we could also set up a call to discuss or 
> alternatively use IRC ?
> There's way too many options depending on setup discussion etc.

Yes, I certainly would like to discuss a few things to see what might be optimal solutions.

> We've been through 4 generations of storage architecture including 
> on-line but off-site backup.

that "off-site" part is starting to worry me a bit. We have some off-site backup but not everything by far. Mostly homes and the most important written stuff (Programs, papers, etc.). Original measurement data are just to huge for that off-site backup (*non* GB ethernet doesn't help there).

K.-H.


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Ben Okopnik [ben at linuxgazette.net]


Fri, 8 Feb 2008 02:41:01 -0500

On Thu, Feb 07, 2008 at 04:18:30PM +0100, Karl-Heinz Herrmann wrote:

> 
> [TAG] no need to put the full address in LG :-)

New feature: anything you post in TAG that you surround with [PRIVATE] [/PRIVATE] tags, including multi-line content, will be replaced with a note that says "Elided content". Not that this is a private list by any means - but that could come in handy.

-- 
* Ben Okopnik * Editor-in-Chief, Linux Gazette * http://LinuxGazette.NET *


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Ramon van Alteren [ramon at forgottenland.net]


Fri, 08 Feb 2008 09:30:45 +0100

Karl-Heinz Herrmann wrote:

> Hi Ramon,
>
> I didn't get round to discuss much of what you wrote with Daniel (Main
> Admin around here). He keeps himself busy with fixing multiseat
> machines  which got broken by upgrades....
>   
Sounds like fun :-(

> Yes, I certainly would like to discuss a few things to see what might
> be optimal solutions. 
> UIN: 318038652
> Nick: K.-H. 
> we are running on GMT+1 :-)
>   
[[[Elided content]]]

> that "off-site" part is starting to worry me a bit. We have some
> off-site backup but not everything by far. Mostly homes and the most
> important written stuff (Programs, papers, etc.). Original measurement
> data are just to huge for that off-site backup (*non* GB ethernet
> doesn't help there).
>   
Mmm remember that a Boeing 747 stacked with DVD's with content has extremely high bandwidth which no-one can beat yet with traditional ethernet cabling. It isn't used that often because:

* Boeings are expensive hardware

* The latency sucks

Remembering that sometimes helps, especially since it doesn't have to be a boeing 747 per se, although it is one of the coolest off-site backup technologies in the world :-)

Ramon


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