Upgrading an Edge10 Edgestore NAS400 (Promise NS4300N)

[salimfadhley]

I just got myself an Edge10 Edgestore NAS400 which is a re-branded version of the promise NS4300N.

All 4 of my bays are full of smallish hard drives. I just bought 4 new 1TB drives as replacements. Is there a way I can up-size my RAID5 array without having to back-up and re-build the entire array?

As an experiment I tried replacing the smallest disk in the array with one which was slightly bigger. My expectation was that when the array was re-built the size of the volume would change to the new expected value of (n-1) * smallest volume size. Unfortunately the volume size does not change at all.

As an alternative I wonder if there is a way to manipulate the LVM partition data to alter the size of the array?

Thanks.

 

[thiggins]

Unless the product says that it supports online RAID expansion, you can't grow an array. From the sound of your experiment, your product doesn't support expansion.

 

[salimfadhley]

Assuming that I've got everything backed up nicely - is there a way to edit the partitions manually using Ubuntu (or any other linux distro).

I think the problem with the NAS400 / Promise NS4300N is that it seems to neither support RAID expansion nor reduction from 4 disks. It's odd that it allows expansion from 3 to 4 disks but does not seem to permit the reverse.