Mix HDD and SSD in same RAID 1 array

delldell-percdell-poweredgeraidssd

I have a Dell Poweredge R410 with Perc H200 controller.

I would like to upgrade my 15k RPM arrays with SSD. Both disks are SAS 6Gbps.

  • Will it work if I remove 1 of the 2 disks, replace by the SSD, wait for sync then replace the other one ?

  • HDD=600GB, SSD=800GB or 400GB.
    If the HDD only has 100GB used, will the controller by smart enough and allow the sync with a 400GB SDD ?

Best Answer

You cannot mix drive types in the same array group on PERC/LSI/HP hardware RAID controllers.

This also applies to mixing SATA, SAS and SSD.

PERC manual:

"Mixing SAS and SATA drives within a virtual disk is not supported. Also, mixing hard drives and SSDs within a virtual disk is not supported."