Keltran,

One thing to remember with the Power vault product line is that the controllers are Active/Passive. SO we would recommend to have all 12 disks in one disk group and then you can have multiple Virtual Disks if you need. That way you will get the performance of having more spindles. Please let me know if you have any further questions.

Kenny,

Thanks for your answer.

..."if you have any further questions", Yes I have ..

So I create one disk group with my 12 disk. I create x virtual disk , I select for each   the same ownership/Preferred path (e.g. : Raid controller Module in slot 0  )  and for all I enable write caching with mirroring.

In this case I use the second controller in totaly passive mode without loadbalancing.

It's right?

Bests regards.

You are correct in that one controller is active and the other is  passive and is used as failover if the active controller were to fail.

Here is the link to the deployment guide for this array.

ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_powervault/powervault-md3200i_Deployment%20Guide_en-us.pdf

I hope this helps.

Now I have my "big" disk group in RAID5 with 4 virtual disk.

and for each server esxi (3 host)  , I set the iops to 1 like this (the defaul is 1000) :

esxcli storage nmp psp roundrobin deviceconfig set -d naa.678xxxxxxx -I 1 -t iops

And for the moment it's all good.

Thanks for your help.