From: Pieter De Wit <pieter@insync.za.net>
To: Krzysztof Adamski <k-list@adamski.org>
Cc: linux-raid@vger.kernel.org
Subject: Re: Looking for help how to migrate 2disk RAID1 to 3 disk RAID6
Date: Wed, 01 Jan 2014 23:33:06 +1300 [thread overview]
Message-ID: <52C3EEE2.10402@insync.za.net> (raw)
In-Reply-To: <1388552041.5058.25.camel@oxygen.netxsys.com>
On 1/01/2014 17:54, Krzysztof Adamski wrote:
> On Wed, 2014-01-01 at 14:02 +1300, Pieter De Wit wrote:
>> On 1/01/2014 13:51, Krzysztof Adamski wrote:
>>> <snip>
>> Hi,
>>
>> RAID Level 6 requires a minimum of 4 drives to implement
>>
>> Cheers,
>>
>> Pieter
> I have seen messages by Neil from 2011 that he was planning to remove
> this silly minimum requirement of 4 drive for RAID6.
>
>
IMHO, that "silly minimum requirement" *is* RAID6, 2xDATA, 2xPARITY. If
you make it 1 DATA, then you might as well have RAID1 with a hot spare
(not even sure how the calc's will work - for RAID6 like that, RAID1 is
easy :) )
I would use RAID5 for now, then migrate to RAID6 when you get a forth
drive. IIRC, you can always upgrade "up", not down (RAID numbers that is)
Cheers,
Pieter
next prev parent reply other threads:[~2014-01-01 10:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-01 0:51 Looking for help how to migrate 2disk RAID1 to 3 disk RAID6 Krzysztof Adamski
2014-01-01 1:02 ` Pieter De Wit
2014-01-01 4:54 ` Krzysztof Adamski
2014-01-01 7:15 ` Tomas M
2014-01-01 15:02 ` Krzysztof Adamski
2014-01-01 10:33 ` Pieter De Wit [this message]
2014-01-01 15:10 ` Krzysztof Adamski
2014-01-01 22:06 ` Pieter De Wit
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