[Gllug] LVM and RAID reshuffling advice

Jon Dye jon at pecorous.co.uk
Thu Nov 20 15:16:47 UTC 2008


2008/11/20 John Hearns <hearnsj at googlemail.com>

>
>
> 2008/11/20 Jon Dye <jon at pecorous.co.uk
>>
>>
>> I have 2 drives currently but if later I decide to add another to the
>> array can I create a RAID5 now with only two disks and later add another
>> disc or should I stick with RAID1 and work out what to do later.  The RAID
>> HOWTO casually suggests RAID5 is for three or more disks but I can't seen
>> any reason why based on the description of how it works.
>>
>> Yeah, it might be possible.
> But you're going to be rubber ducked if you lose one drive out of two, and
> try to reconstruct parity.
> (AFAIK)
>

Oh yeah, I forgot about the scenario where a disk fails :-)

JD
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