5 Replies Latest reply on Jun 28, 2018 7:08 AM by black_zion

    Increase RAID Size?


      I have an older system with a Gigabyte motherboard utilizing an AMD SB950 chipset and a Phenom 960T CPU (unlocked to 6 cores).  The OS is Windows10.  Everything seems to be running fine.


      I currently have a RAID 1 array configured on two 1.5 TB physical drives.  I want to replace these two drives with 2.0 TB drives and increase the size of the logical drive to 2.0 TB, but I would like to do that without the hassle of doing a complete backup and restore.  In other words, I would like RAIDXpert to migrate the data to the new drives and expand the logical drive size to use the full space available on the new physical disks.  But I can find nothing documented about how to do this (I do not have open SATA ports to allow me to run both the old physical drives and the new drives at the same time).


      I know I can replace an existing RAID 1 physical drive with a larger one and then have RAIDXpert rebuild the array on the new drive.  But if I do that, I assume the result would still be the size of the original logical drive, limited by the total space available on the smallest physical drive.  So what happens if I then replace the 2nd original 1.5 TB drive with another 2.0 TB drive, so that both physical drives are now 2.0 TB?  After I rebuild the array on the new larger drive, will the resulting logical drive still be limited to the original size of 1.5 TB?


      If after completing the above steps, I find that the new physical drives have 500 GB of unallocated space, is there an easy way to expand the logical drive to incorporate all the available space on the physical drives?  Would it possibly be as easy as just using the existing W10 Disk Management utility to expand the partition?  That seems to be just too simple to hope for!


      I know I could just try all these things myself and see what happens, but I was hoping to leverage someone else's hard-earned knowledge here before I accidentally screwed the pooch by diving in blindly.  And waiting through two RAIDXpert rebuilds just to see what happens might prove to be nothing but wasted time even if I don't screw something up.  Perhaps in the end, I should just remove the old drives, configure a new RAID array on the new larger drives, and then just use an external USB dock to copy all the data from one of the original drives?


      Thanks in advance for any insight you might be able to give me on this process.

        • Re: Increase RAID Size?

          In Windows 10 you should use Windows to create your RAID and not RAIDXpert.

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            • Re: Increase RAID Size?

              Thank you for the response - I was unaware of this capability in W10.  I built this computer long ago and it started out as W7 using the RAID capability from the AMD SB950.


              I'll look into the W10 Storage Spaces option, then probably just do what I suggested last - install the new drives (and configure the mirror with Storage Spaces), then just copy off all the data from one of the old mirrors using a USB dock.  I'll let y'all know how it goes . . .

            • Re: Increase RAID Size?

              yeah In Windows 10 you should use Windows to create your RAID and not RAIDXpert

                • Re: Increase RAID Size?

                  Well, this turned out to be almost stupidly easy (something I do NOT expect with any M$ product!).  Here is the process for anybody else that stumbles across this and needs to do the same thing:


                  • I shut down the computer and removed the old 1.5 TB RAID 1 drives.
                  • I connected two new unformulated 2.0 TB drives in their place.
                  • On first boot, I entered BIOS and changed the Integrated Peripherals on-chip SATA type to Native IDE.
                  • After re-start into W10, I used Disk Management to crate a new Mirror on the new drives.  Note that this apparently is NOT the same as using Storage Spaces, since subsequent testing with Manage Storage Spaces does NOT see this new mirror at all. Apparently you can accomplish the same Mirror using either W10 tool, but they do not create the mirror in the same way.  The one thing I am concerned about is that W10 may not monitor and report on the Mirror status as easily and effectively as RAIDXpert did.
                  • With the new Mirror created, I just popped one of the old RAID drives into a USB dock and copied everything over.  1.5 TB took a while, but all seems to be operating now exactly as it did before I started this.