RAID synchronization, very bad performance

RAID, Volume, storage pool, hard drive, USB, SSD cache and iSCSI LUN
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Etienne
Posts: 1
Joined: 07 Feb 2021, 22:27

RAID synchronization, very bad performance

Post by Etienne »

Hello, I just received my F5-422 / 10 Gbe.
I installed on it 3 Exon HDDs of 16Tb each.
The RAID 5 synchronization is currently in progress (I'm at 10% after 3 hours of installation).

For the moment the write speeds are much worse than on all my other systems, almost unusable.

Is this normal considering the RAID is under construction? I don't have to worry about it?

Thank you!
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TMroy
TerraMaster Team
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Joined: 10 Mar 2020, 14:04
China

Re: RAID synchronization, very bad performance

Post by TMroy »

{L_BUTTON_AT}Etienne
During RAID synchronization, device performance will drop a lot. You better wait until it finish.
To contact our team, please send email to following addresses, remember to replace (at) with @:
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titanrx8
Posts: 222
Joined: 17 Jul 2020, 06:17

Re: RAID synchronization, very bad performance

Post by titanrx8 »

@etienne

I just rebuilt RAID 1 on F2-221 using ext4 on 2 x WD 4tb Reds. The synchronization process took 13 hours and 10 minutes. I don't recall how long it took when I originally built the RAID 1 using BTRFS but it seemed to take less time.
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