[ILUG] Re: [SAGE-IE] Disk storage.

[Thomas Pedoussaut]

(Google NDA yada yada ya ...)

Niall O Broin wrote:

> On 4 Sep 2005, at 17:54, Michael Mc Grath wrote:
>
>> If you use what you've just recommended, can you tell me if you roll
>> the data to tape and on what frequency, or if you have total trust in
>> the devices ability to maintain the data provided its alerts are
>> monitored and acted upon?
>
>
> If you have total trust in the ability of ANY one device to maintain 
> data you're much more trusting of hardware than am I. I find google's 
> data storage model in the google filesystem very interesting - n 
> replicas of data are maintained, with the value of n determined by the 
> owner of the data, presumably depending on how much importance he 
> attachs to it.
>
> Of course, the google filsystem is a) proprietary to google (but I 
> think there are other similar projects) and b) a little bit expensive 
> to deploy (not that a 1TB NetApp Filer is going to be cheap)

a) the RedHat version of GFS: Global File System is relatively similar 
in concept.

b) 1TB is really tiny nowadays. Buy 3 machines and stick 4 x 250GB HD 
per machine, you have the replication needed to take care of unique 
hardware failures. The main element to ensure the safety of your data is 
early replacement of bad hardware. Buy a 4th machine as hotspare and 
never leave work with a machine down. Replace hardware at first sign of 
decrepancy (SMARTD ...)

>
>
>
> Niall
>
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