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Hello Andres, I would like to inform you that the PCH supports Raid Expansion. Please check the following links for additional information Intel® Rapid Storage Technology (Intel® RST) — Adding Drives to a RAID Array
The possibility of expanding your Raid array it’s going to depends on the system manufacture, in this case Gigabyte, if they support this feature.
I suggest you to update the BIOS of the motherboard in order to update the option ROM also.
Thank you for answering my post. I can definitely find out if Gigabyte supports the feature or not, and upgrade my BIOS if there's a later version then what I'm running.
I had one follow up question. The link in your reply is about adding a new drive to an array, which isn't what I'm attempting to do. I would be replacing 5 x 2TB disk one at a time with 5 x 4TB disks. Once the last disk is replaced (rebuilds after each replacement), will I be able to take advantage of the additional space? Assuming Gigabyte supports the feature.
Would the above be possible or does capacity expansion only mean adding disks is possible (not replacing)?
I’m sorry Andres, this is the URL I wanted to share with you. This is about a Raid 1, but it will provide you additional information.
Based on me experience on RAID 5 the procedure will be annoying, since it will be necessary to reset to non-Raid the disk, every time you add a new hard drive.
The best and the easiest way to do this will be by performing a full backup of all your data on an external hard drive. Create an image from your RAID 5 and then replace the drives and start the Raid from scratch.
I found this other URL, which describes the procedure you want to follow. It looks like it could be done this way, but I really recommend you to do a data backup.
I think the Raid1 procedure would only apply to Raid 1 being as it's a mirror. If I did that on a Raid 5 volume I think I'd lose everything. The Synology link you sent is exactly what I'm hoping to be able to do. Unfortunately this is my largest array so backing it up is going to be a bit of a challenge. I have a few other smaller arrays though, I need to figure out some way to backup the data even if expansion is definitely possible. I'd hate for anything to go wrong and lose the 7+TB of data I have on the array.
Thank you for the feedback and help here.
To answer the question, yes it is possible to do this. I have Z68 motherboard with PCH controller, and I replaced 4x2TB drives in RAID 5 one by one with 4x4TB drives, after the last drive was replaced and the rebuild complete it allowed me to increase the size of the array and volume from 6TB to 12TB.