Hardware RAID or software for ZFS

[bsd at todoo.biz]

Hi, 


I would need your help in order to figure out which will be the best in order to setup a server which will be used as a Poudriere server. 

My question is related to the usage of hardware RAID controller (JBOD) or software based controller (graid) 

Server we are targeting is a SuperMicro 1018R-WC0R - 1U

I used to build my server using an HBA such as LSI SAS 9207-8i or LSI SAS 9201-16i
Then I’ll configure the HBA as JBOD so that disks can be presented correctly to the system so that we can build our ZFS FS on top of that. 


My sysadmin suggested me to get rid of the HBA and use direct connectivity and Graid. 


I would like to have some feedback on various aspects : 

1. performance 
2. usability 
3. problem one might have encountered



Thanks for your feedback. 

G.B. 

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