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Re: setting up raid10 with more than 4 drives

From: "Luke Lonergan" <LLonergan(at)greenplum(dot)com>
To: "Michael Stone" <mstone+postgres(at)mathom(dot)us>,pgsql-performance(at)postgresql(dot)org
Subject: Re: setting up raid10 with more than 4 drives
Date: 2007-05-30 15:21:21
Message-ID: C3E62232E3BCF24CBA20D72BFDCB6BF802AF2F1B@MI8NYCMAIL08.Mi8.com (view raw or flat)
Thread:
Lists: pgsql-performance
It's created when the data is written to both drives.

This is standard stuff, very well proven: try googling 'self healing zfs'.

- Luke

Msg is shrt cuz m on ma treo

 -----Original Message-----
From: 	Michael Stone [mailto:mstone+postgres(at)mathom(dot)us]
Sent:	Wednesday, May 30, 2007 11:11 AM Eastern Standard Time
To:	pgsql-performance(at)postgresql(dot)org
Subject:	Re: [PERFORM] setting up raid10 with more than 4 drives

On Wed, May 30, 2007 at 10:36:48AM -0400, Luke Lonergan wrote:
>> I don't see how that's better at all; in fact, it reduces to 
>> exactly the same problem: given two pieces of data which 
>> disagree, which is right?  
>
>The one that matches the checksum.

And you know the checksum is good, how?

Mike Stone

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Subject: Re: setting up raid10 with more than 4 drives
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