Hello leroyl,

What size DDP are you trying to create? What is the current size of your DDP that is on the other 18 drives?  If you try using a smaller size DDP will it complete the creation?

Please let us know if you have any other questions.

Thanks for the reply,

I have 1 disk pool currently. It has 29x 10TB disks.. for a total size of 207.223 TB it has 8 virtual disks on this pool

i have 11 unused 10TB disks. i know that the MAX per disk pool is 256TB.. so this is why i would like to create a second disk pool. as adding the 11 disks to the first disk pool would exceeded the 256TB limit.

Any info you have on why i cannot create the second disk pool would be helpful.

Hello leroyl,

The 256TB limit for DDP is for the entire array.  Since you have a DDP already of 207.223TB then you can create a DDP of 48TB, & that would max out your DDP. Here is the link to the support matrix and on page 7 it list out that the 256TB DDP limit is per array. https://downloads.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_powervault/powervault-md3660i_support-matrix_en-us.pdf

Please let us know if you have any other questions.