Hi All,
First time poster,
Have a f4-425plus, it had 4 drives, 2x 16tb and 2x3tb in traid,
Swapped a single 3tb out to add in another 16 and its been approx 18hrs and only rebuilt about 7% of the raid so far, is this normal? i could have "" reaquired " my plex library in this time with ease.
Seems EXTREMELY slow, i have another brand new 16tb to swap out for the second 3tb also....
Any help?
[Help] f4-425plus extremely slow raid rebuild
Re: [Help] f4-425plus extremely slow raid rebuild
You can check the RAID synchronization speed by entering the command 'cat /proc/mdstat' in the 'Terminal' application of TOS. Meanwhile, please go to 'Control Panel > Disks > S.M.A.R.T.' to run a S.M.A.R.T. test on the disks and check for any "Warning" or "Critical" alerts.
To contact our team, please send email to following addresses, remember to replace (at) with @:
Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
Technical team: support(at)terra-master.com(for technical support)
Service team: service(at)terra-master.com(for purchasing, return, replacement, RMA service)
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JeanEdmonson
- Posts: 1
- Joined: 12 Mar 2026, 15:44
Re: [Help] f4-425plus extremely slow raid rebuild
Thanks for sharingTMtina wrote: ↑28 Feb 2026, 20:34You can check the RAID synchronization speed by entering the command 'cat /proc/mdstat' in the 'Terminal' application of TOS. Meanwhile, please go to 'Control Panel > Disks > S.M.A.R.T.' to run a S.M.A.R.T. test on the disks and check for any "Warning" or "Critical" alerts.
