Less than 1MB/s

[peternas1]

My new NAS is really slow when transferring files from my Windows machine and I can't understand why. It's often less than 100KB/s. It happens both when using Windows explorer and also NetBak replicator.

Any ideas More details below.

Firmware - latest (QTS 5.0.1.2194)
CPU usage - 20-30%
Memory usage - <2GB (8GB available)
HD usage - all below 1MB/s (4 in total)
Temperatures - all 40-50c

Windows machine - High spec Windows 10 machine copying from SSD
Network switch - 0 errors on all devices

[noheihei]

I am experiencing the same problem with 422-2G. I noticed that upload speeds are varying between 11, 8, 2, 1 Mbs. Any crashing or simultaneously open application will ruin the performance. I tried increasing the network card frame size to 4 Kb (maximum supported with the dongle I use). No luck. I am also clueless what is happening here.

[dolbyman]

First post has no NAS model given, second has a non existing 422

Please recheck...

[peternas1]

Model = TS-431XeU

btw. it has been up to around 100MB/s for short periods, but it's less than 1MB/s for most of the time.

[dolbyman]

What disk models are used?

[peternas1]

4x WD Red Pro 4TB NAS HDD

[dolbyman]

What model?..Hope no SMR

[peternas1]

That is the model, and they're CMR.

[dolbyman]

Didnt see the "pro" ..anyways, model would be something more cryptic..e g. WD4003FFBX

As your symptoms would be typical for SMR issues, that was worth a shot to check

[peternas1]

It seems that some files are fast. I'm wondering whether it's small files that are slow. i.e. I think one 100MB file would be quick, but 100,000 10Kb files would be slow.

[dolbyman]

Due to protocol overhead, that is always the case (many small files are much slower to transfer than few large files)

[peternas1]

Due to protocol overhead, that is always the case (many small files are much slower to transfer than few large files)

Less than 100Kb though? Also, my network usage isn't high. My who interface is only sending 1-2Mbps (1Gbit connection)

[dolbyman]

sometimes when shovelling around tons of little files (e.g. installation folders) even 10GbE goes down to a couple of hounded kb\s (might be the AV on the local machine also clamping down) but that's the way it is

[peternas1]

Do you know whether there's a way to copy the files quicker? Either a different protocol or by compressing them on the Windows machine and decompressing them on the NAS?

[dolbyman]

If you quick compress the files into a single file/container it should afterwards transfer much faster, yes