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[Discussion] Question About Upgrading HDD Storage in RAID 5

Posted: 16 Oct 2026, 16:56
by Stephene
Hi everyone,

I have a question about upgrading storage capacity on a TerraMaster NAS.

When using RAID 5, is it possible to replace smaller hard drives with larger ones individually without losing existing data?

Also, after replacing all the drives, do I need to manually expand the storage pool to use the additional space?

I'd appreciate any advice or recommendations.

Thanks in advance!

Re: [Discussion] Question About Upgrading HDD Storage in RAID 5

Posted: 17 Oct 2026, 08:58
by CursaYang
You can replace the existing drives with larger ones one by one, without losing your existing data.

After the replacement is complete, the storage pool will expand automatically, but you will need to manually expand the volume capacity.

For detailed instructions, please refer to the documentation in the Help Center:

https://help.terra-master.com/docs/TOS7 ... ge-manager