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From "Allen Wittenauer"...@apache.org>
Subject Re: Supervisely, RAID0 provides best io performance whereas no RAID the worst
Date Mon, 01 Aug 2016 06:11:22 GMT


On 2016-07-30 20:12 (-0700), Shady Xu <shadyxu@gmail.com> wrote: 
> Thanks Andrew, I know about the disk failure risk and that it's one of the
> reasons why we should use JBOD. But JBOD provides worse performance than
> RAID 0.




 And take into account the fact that HDFS does have other
> replications and it will make one more replication on another DataNode when
> disk failure happens. So why should we sacrifice performance to prevent
> data loss which can naturally be avoided by HDFS?
> 

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