[NTLUG:Discuss] what IS the fine line between RAID 0+1 and RAID10

[Eli Cantu]

Stuart Johnston wrote:
> Richard Geoffrion wrote:
>   
>> So what fundamental piece of information am I missing that allows me to 
>> understand why RAID-10 is different from RAID 0+1?  They both seem to 
>> LOOK the same according to http://www.acnc.com/raid.html but yet the are 
>> supposedly functionally different? 
>>     
>
> The main practical difference is that RAID 0+1 can never survive loosing 
> more than 1 disk at a time.  RAID 10 can loose up to half the disks, as 
> long as they are not from the same RAID 1 set.
>
> I think the wikipedia article explains it better:
>
> http://en.wikipedia.org/wiki/RAID_10
>
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>   

and manufacturers and others sometimes refer to 10, 01, 1+0, 0+1 etc etc 
etc.

simply put, mirrored stripe sets, what I know as 01, are junk to me.

striped mirrors (what I now as 10) are good....like already mentioned, 
can survive multiple drive failures, and rebuilds are fast.

so the fine line is actually a chasm.

;-)

e