Ready NAS 102, What is the maximum throughput possible with this NAS?

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StephenB wrote:

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DoctorBrown wrote:

StephenB: Thanks for the info. So, I knew I was not imagining that I had better throughput in the past.

 

Sandshark: I was being snarky with my NetGear comment. Of course one can't buy another ReadyNAS, but I'm pretty sure they wouldn't mind if one bought a newer model of their NASs.😏

 

Ok, now I'm working from the ground up. I've swapped the disks to two Seagate 7200 RPM disks, unfortunately the only two 7200 Seagate disks I have are different capacities, 750 GB and 1TB. I'm going to put my 4 TB disks back in since the disks don't seem to make a difference.

 

I reconfigured my computer and NAS to not use jumbo frames, swapped switch ports. I'm going to figure this out.

 

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Maybe start with jbod, and not RAID-1.  Then add in RAID-1 later.

 

If you are comfortable with the linux command line, there are some other things you can do:

1. Measure disk throughput directly, and not over the network.
2. Install iPerf, and measure network throughput w/o disk I/O potentially interfering with the measurement.
3. ...

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I've used iPerf3 to test the network from the ReadyNAS, it achieved near full network speed, 900 Mb/s. I logged in as the root user and per the top app the iPerf3 process was using 97% CPU. I copied a 2 GB folder to another folder on the NAS and the copy rate was 55 MB/s (444Mb/s) using 45% CPU. I then used Windows to copy the same 2 GB folder to the NAS. The transfer rate was the measly 15 MB/s with the smbd process using 90% of the CPU. Logging on as root on my Synology NAS, scp to and from this nas was only 12 MB/s.

Any ideas where I go from here? Are there other Debian tools I can use to figure out what's happening?

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DoctorBrown wrote:
I've used iPerf3 to test the network from the ReadyNAS, it achieved near full network speed, 900 Mb/s. I logged in as the root user and per the top app the iPerf3 process was using 97% CPU. I copied a 2 GB folder to another folder on the NAS and the copy rate was 55 MB/s (444Mb/s) using 45% CPU. I then used Windows to copy the same 2 GB folder to the NAS. The transfer rate was the measly 15 MB/s with the smbd process using 90% of the CPU. Logging on as root on my Synology NAS, scp to and from this nas was only 12 MB/s.

 

Any ideas where I go from here? Are there other Debian tools I can use to figure out what's happening?

 

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Have you tried using a single 2 GB file to test instead of a folder?  I suspect that will give different results. 

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StephenB wrote:

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Have you tried using a single 2 GB file to test instead of a folder?  I suspect that will give different results. 

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I have verified that a 1 GB file has the same transfer rate as the folder I'm using. I hear what you are suggesting.The folder I'm using has 20 100 MB files. I constructed these folders specifically to test transfer rates. I also have folders with smaller files to test how the systems deal with a large number of small files.

I have used the same test files when testing the between my PC and the Synology NAS which is able to achieve 980 Gb/s for both read and write.

I have also copied the folder and the file. between the Synology NAS and the ReadyNAS. The throughput is limited by the ReadyNAS.