[CentOS] Infrastructure HELP!

ML mailinglists at MailNewsRSS.com
Thu Oct 29 20:25:05 UTC 2009


Ryan,

> If you want performance stick with RAID 10. In general the more drives
> (spindles) the faster the array. The Western Digital RE3 500 GB drives
> are a good deal. You should be able to get 4 of those in the low
> $200s. In RAID 10 this would give you better performance than 2 x 1TB
> in RAID 1.
>
They are like $89.99 a  piece on NewEgg. I have a friend that has 1 x  
1TB Seagate Raid level drives he will sell me for $100 each.

Is software RAID 10 decent performance?

-Jason

> Ryan
>
> On Thu, Oct 29, 2009 at 2:36 PM, ML <mailinglists at mailnewsrss.com>  
> wrote:
>>
>> On Oct 29, 2009, at 11:11 AM, Neil Aggarwal wrote:
>>
>>> RAID 10 is striping across mirrored drives.
>>>
>>> So, if you have 4 x 1TB drives, think of it as two separate
>>> 1 TB volumes.  The system will write half your data to
>>> volume A and the other half to volume B.  The data in volume
>>> A and B do not overlap.
>>>
>>> Now, each volume is composed of a mirrored set of drives.
>>> Anything written to volume A is actually stored on two drives.
>>> Anything written to volume B is actually stores on the other two
>>> drives.
>>>
>>> Does this make sense?
>>> Let me know if you need any more explanation.
>>
>> No it makes sense.
>>
>> I am contemplating if I really need 4 x 1tb in this system. I mean  
>> how
>> much space with some photo's, web pages and MySQL take up if there  
>> are
>> 5,000 subscribers to start up?
>>
>> Would 2 x 1TB enterprise drives be enough mirrored?
>>
>>> Also, when you move to a hosted solution, I would appreciate
>>> your considering my company for it.
>>
>> Sure, I will be doing a lot of research on that for sure.
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