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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Effective allocation of multiple disks
Date Thu, 11 Mar 2010 18:45:14 GMT
Except that for a major compaction the whole thing gets put in one
directory.  That's the problem w/ the JBOD approach.

On Thu, Mar 11, 2010 at 12:01 PM, Eric Evans <eevans@rackspace.com> wrote:
> On Wed, 2010-03-10 at 23:20 -0600, Jonathan Ellis wrote:
>> On Wed, Mar 10, 2010 at 9:31 PM, Anthony Molinaro
>> <anthonym@alumni.caltech.edu> wrote:
>> > I would almost
>> > recommend just keeping things simple and removing multiple data
>> directories
>> > from the config altogether and just documenting that you should plan
>> on using
>> > OS level mechanisms for growing diskspace and io.
>>
>> I think that is a pretty sane suggestion actually.
>
> Or maybe leave the code as is and just document the situation more
> clearly? If you're adding more disks to increase storage capacity and
> you don't strictly need the extra IO, then multiple data directories
> might be preferable to other forms of aggregation (it's certainly
> simpler than say a volume manager).
>
> --
> Eric Evans
> eevans@rackspace.com
>
>

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