So it's been about two years (I think) since I updated the unRAID software on my server. Lately write speeds have been declining, I decided to upgrade from 4.4.2 to 4.7.

 

On my best days average write speeds were about 10MB\sec.. Since the update they are 40MB\sec sustained. Is this normal, or is something wrong with parity?

 

Thanks.

Also, I had BubbaRaid installed previously - but now want unRAID OS to be the primary boot option. Any idea how to set it to that?

Also, I had BubbaRaid installed previously - but now want unRAID OS to be the primary boot option. Any idea how to set it to that?

follow the instructions in the old thread to un-install bubba raid.

Ok.. I did a search prior to posting this but could not find info on uninstalling Bubba raid. Can you point me to the link?

 

Anyone know if my speeds or normal?

40MB/s could easily be normal but speed is hardware and configuration dependent.  I assume you do not have a cache drive in place.

 

Some info on your hardware setup would help.

Ok.. I did a search prior to posting this but could not find info on uninstalling Bubba raid. Can you point me to the link?

 

Anyone know if my speeds or normal?

 

A search within the BubbaRAID thread should have found this close to the end of the thread.

So it's been about two years (I think) since I updated the unRAID software on my server. Lately write speeds have been declining, I decided to upgrade from 4.4.2 to 4.7.

 

On my best days average write speeds were about 10MB\sec.. Since the update they are 40MB\sec sustained. Is this normal, or is something wrong with parity?

 

Thanks.

 

There was a fairly large increase in speed with the 4.5 upgrade, but as far as I recall it was about 30% which is much less than you report.

 

Perhaps when you were at 10MB/sec you were writing to an IDE drive and at 40MB/sec you are writing to a SATA drive?  I know when I replaced my last IDE drives with a larger SATA drive my parity checks increased from about 20MB/s to about 80MB/s.

 

Regards,

 

Stephen

Ok.. I did a search prior to posting this but could not find info on uninstalling Bubba raid. Can you point me to the link?

 

Anyone know if my speeds or normal?

 

A search within the BubbaRAID thread should have found this close to the end of the thread.

 

Thank you.

My configuration has not changed since the server was built. I don't remember the exact hardware, but I have 6 drives totaling about 5TB, all SATA. I ran a parity check and it came back with zero errors. The main page also shows as "Parity is valid". 

 

Also, I am not referring to parity speeds. Actual write speeds to the disks are 40MB/s.

I'm not sure what the problem is. You were getting 10 and now your getting 40. That seems pretty good to me.

It's probably normal. There was a large write speed increase at some fairly recent point in the development. I thought it was earlier than 4.4.2, but it might not have been.

 

Peter