IO Test for EBS Volumes: RAID10 and RAID0′s performance
RAID10 is the most widely used RAID in the database area, and RAID0 is the one recommended by Amazon. I am going to test performance of them in the same way I tested RAID5.
EC2 type: c1.xlarge
EBS num: 10
OS: Redhat 6.2
Parameter: block size = 16K; thread number = 16
Here is result:
So far as we tested, RAID0 is superior to RAID10 in random write. But considering the durability RAID10 provided, it is still a good choice for database. Even for application instance, RAID10 is still suitable because there are a lot of appending logs.