UNRAID 6.8.3 - Disk Speeds Dropped


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Hello Everyone,

I've a strange behavior on my Unraid server.

From about a week - the data transfer on my disks is dropped down (from +- 100/150MB/s to 50/60MB/s)

I didn't modify anything and also Unraid hasn't updated itself.



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9 hours ago, trurl said:

That slower speed seems reasonable if you have parity and are using the default parity update method.


Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post.


Where can I check the "default parity update method" ?

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26 minutes ago, johnnie.black said:


My server is set to: AUTO


This is mainly because I read the article you posted in the past - and a contra of the TURBO-MODE was:

"Another possible problem if you were in Turbo mode, and you are watching a movie streaming to your player, then a write kicks in to the server and starts spinning up ALL of the drives, causing that well-known pause and stuttering in your movie.  Who wants to deal with the whining that starts then"


Now - my disk are spinning all the time (it's there a real power$ saving spinning them down?) - so maybe I could try it.

And since IF I write a new movie file on the disk where I'm currently watching - it WILL pause and stutter - cause I've SATA disks and not SAS disks.

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4 minutes ago, johnnie.black said:

Then 50/60MB/s is normal and about the max you can get with the default writing mode.

Hmm.. but as said 10days ago it was on 100/150MB/s

And I didn't changed a thing.

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1 minute ago, TDA said:

Hmm.. but as said 10days ago it was on 100/150MB/s

Impossible, except for the first few GBs that will be cached to RAM, unless you have an SSD based array.

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