Slow transfer between Inter-Pools on QuTS-Hero System

English Storage
1

Hello,
I am running a TVS-h1288X-H5.2.3.3006. Here is the setup

  • 1st pool - 4x 4TB raid 5
  • 2nd pool - 4x 10 TB drives raid 5
  • 3rd pool - 2x m.2 1TB running system and some other shares

When trying to transfer outside the system, the speeds are consistent and fine, sending data in the multi-gigabit range without a problem.

However, when transferring data between different internal pools, the speed is initially fast, then drops down to KB/s. Sometimes stalled completely. After, it will spike up to 50 to 100+ MB/s for a few seconds and then slow transfer or stop for a few seconds. Rinse and repeat until the file is transferred completely.

Has anyone experienced this? If so, what is the solution to this?

2

Where are your benchmarks?
I mean you should check and gather more consistent data even for yourself.
For example: log in with a user in ssh a do time cp /share/pool1/bigbigfile.mkv /share/pool2/testfolder
Same with a lot of small files
Same from pool2 to pool1 , from pool3 to pool2

Use FileStation as well and then from your computer (you say it works fine).

Seems weird your issue, I would say little RAM but if it works fine in local network makes no sense. You need to gather more information in my opinion.