On Nov 2, 2009, at 8:03 PM, Jonathan wrote:

> From a PM with Sascha, to the list:
>
>>> I am thinking also storage-wise...
>>> 4 TB should be plenty, right...
>>> I am thinking of 6 x 1.5 TB on Raid 1+0 (both fast and redundant)
>>
>> This amount of storage is more than enough.
>
> I phrased the question wrong perhaps.
> What is an IDEAL amount of storage for a complete set of tables with a
> decent probability?
>
> 99% or 96% being decent...

The math works out as:

50% failure rate at <3TB
Each time you half the failure rate, the storage doubles.
75% = 6TB; ... ; 99% = ~150 TB

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