Why can't use 2.7TB SW RAID in 4TB module?

Article ID: 422

Last updated: 14 Jul, 2009

Problem:

I want to create a RAID 6 using 4 HDD 1.5TB using the S/W RAID feature Open-E offer. But the software says I'm exceeding the limit, as I'm using 4TB license key.

I created the S/W RAID using the demo and got array of size (2.7TB) then use the module again, but the message is still prompting, even though the array is smaller than 4TB.

Solution:

The storage limit is based on disks that are seen by "fdisk -l". If it is SW RAID then the system sees all disks and adds up overall capacity. In H/W RAID it is different as RAID controller reports to the system capacity of created RAID units, not all single disks.