Stupidly long rebuild times

[edgley]

Hi,

Got my D5 on Friday, set it up and started to copy data.

The RAID5 failed almost immediately.
Oh well, I thought, at least its a chance to see how well it rebuilds.

Ha!
Its now on the FIFTH day, only done 36% and is saying that it will take another 46hr, which is said last night.

All I can think of doing is copy off the data I managed to get on it.
Nuke it.
Set it up again.
Then try another test rebuild, as this time seem rather unacceptable to me.

My Synology did a rebuild, starting on the Friday, was all finished by the Saturday.

What are other peoples experience concerning rebuild times please?

Thanks,
Simon

[TMS]

What capacity hard disk are you using, and whether the hard disk is the same model?

[TMroy]

Normally raid sync doesn't cost such time. the sync speed is about 150-180MB/s for mechanic drive. Please make sure you are using suitable drives for your raid.

[edgley]

There are 3 Blue 4TB drives are in it.
I believe I have the right drivers.
Although I thought as it was hardware RAID the drivers wouldn't influenzas that?

Its not even up to 40% now.
Still trying to get the data off it to nuke it.

[edgley]

Nuked it in the end.
Having another go now.

Do you think formatting in APFS or using 4K sector size might have had anything to do with it please?

[TMroy]

Blue drive is desktop hard drive, it is not recommended to use blue drive for raid configuration.

[edgley]

Yes, I know that.
However, I do not believe it to be the HDD that was the cause of the long times.

When I tried to power it off, it wouldn't.
In the end I had to remove the power.