I have a Dell T420 with Windows server 2016. It has two virtual drives. C:raid1, 2 drives, D:raid5, 5drives. This leaves me one spare drive slot. I purchased another drive for the raid5 array but can't seem to find the right software to expand the array. OMSA seems to be retired, ISM doesn't work on this server and IRADC7 doesn't seem to have an expansion option. Where am I going wrong?
Yeah, OMSA is retired, but I think you can still install it to do some configurations. Perhaps, you can follow what Joerg mentioned first. iDRAC7 does not have the capability to configure RAID, you are not wrong. Yes, you will need to know what PERC are you using, if you are using PERC S110, it does not support expansion.
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The manual says clearly that H310 supports ORE. So install latest OMSA for your OS/Host and select the "Reconfigure" Task within the VD and select your Disks. Sometimes you need to scroll to the right to see the Dropdown within the GUI.
OMSA is depricated for latest Hosts but your Hardware is around 12 years old and your OS is 10.
@DELL-Joey C Thank you. I will let you know the outcome and make sure the firmware is up-to-date. What about hard drives? does the firmware of the new drive need to be the same as the others in the raid?
Origin3k
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Posted November 8th, 2025 16:58
That depends on the type of PERC Raid controller. Its named "Online Capacity Expansion" within the manual.
https://dl.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprtl_adapters/poweredge-rc-h310_user%27s%20guide_en-us.pdf
https://www.dell.com/support/contents/en-is/videos/videoplayer/how-to-perform-online-capacity-expansion-for-dell-perc/6079770575001
Regards,
Joerg