[CentOS] Re: A question about RAID and partitions

Tue May 22 22:18:47 UTC 2007
William Warren <hescominsoon at emmanuelcomputerconsulting.com>

have raid 0 and raid1 on the same drive isn't going to gie you anything 
since the raid 1 will "slow" the other raids down.

Scott Silva wrote:
> Scott Moseman spake the following on 5/22/2007 11:30 AM:
>> On 5/22/07, Scott Silva <ssilva at sgvwater.com>
>> wrote:
>>>> How do you create several RAID devices if you only have 2 drives?
>>>> Is there a way to create virtual RAID sets?  That sounds too scary.
>>> You create raid devices over partitions that don't span the entire drive.
>>>
>> Why would this be a configuration that someone would want to do?
>> So you can have both a 0 (performance) and 1 (redundancy) on the
>> same physical drives, depending on your partition?  Just seems odd.
>>
>> Thanks,
>> Scott
> What if you wanted /boot and / to be on a raid1 for redundancy, but you wanted
> a scratch directory on raid 0 for the speed, maybe for video editing or other
> I/O intensive operation?
> If you didn't care that the scratch directory failed on a drive fail, you
> could get back and running with a reboot and re-creating the filesystem on the
> scratch directory.
> 

-- 
My "Foundation" verse:
Isa 54:17  No weapon that is formed against thee shall prosper; and 
every tongue that shall rise against thee in judgment thou shalt 
condemn. This is the heritage of the servants of the LORD, and their 
righteousness is of me, saith the LORD.

-- carpe ductum -- "Grab the tape"
CDTT (Certified Duct Tape Technician)

Linux user #322099
Machines:
206822
256638
276825
http://counter.li.org/