RAID5 or RAID50 for database?

[J. Epperson]

On Fri, May 23, 2008 00:58, Bahadir Kiziltan wrote:
> You need at least 6 drives for RAID5. I don't know if Perc 4e/Di allows
> configuring the RAID5.
>
> 2008/5/22 mcclnx mcc <mcclnx at yahoo.com.tw>:
>> we have DELL 6800 server with 12 internal disks in it.  O.S. is CENTOS
>> 4.6 and SCSI control card is PERC 4e/di.
>>
>> We plan to configure 4 disks (5,8,9,10) as RAID5 or RAID50.  This
>> logical volume will be use as file systems and store database backup
>> files.
>>
>> Can anyone tell me which one is better on performance?
>>

This thread gets more bizarre as it goes along.  Of course you need only
three drives for a RAID5, you're probably intending to be talking about
RAID50.  And technically, you could have a three drive RAID50, built from
three single-drive RAID0's.  Gratuitous, but possible.