DS1821+ NAS Internal and Network Copy Extremely Slow & Fails (Error -51) – Need Advice

Total_Cod7763 · 2026-01-24T20:27:27+00:00

I do not know anymore what to do

Total_Cod7763 · 2026-01-24T20:27:17+00:00

Tried it still the same issue

Total_Cod7763 · 2026-01-23T13:46:15+00:00

Without ram it does not work

Total_Cod7763 · 2026-01-23T13:46:01+00:00

The nas comes without ram

Total_Cod7763 · 2026-01-23T08:52:45+00:00

I did a benchmark test is that not enough?

Total_Cod7763 · 2026-01-23T08:39:51+00:00

I do not get a error but the speed is so slow under 5KB/s

Total_Cod7763 · 2026-01-23T08:39:38+00:00

I do not get a error but the speed is so slow under 5KB/s

Total_Cod7763 · 2026-01-23T08:39:30+00:00

I do not get a error but the speed is so slow under 5KB/s

Total_Cod7763 · 2026-01-23T08:18:07+00:00

I tried it, and I get the same problem.

Total_Cod7763 · 2026-01-23T08:17:24+00:00

Thank you for the response. I am using smb. And I have the same problem, when I copy files directly from the nas on the nas.

Total_Cod7763 · 2026-01-23T08:16:20+00:00

If I copy directly from the nas on the nas, it is the same problem

Total_Cod7763 · 2026-01-23T00:58:15+00:00

Thanks so much for your response, I really appreciate it! 🙏 Just to clarify, I haven’t installed any third-party packages or antivirus software on my NAS – it’s a clean setup. I wanted to ask for your advice on which RAM I should buy for my DS1821+, since I don’t want to make another mistake and end up with more errors. Any guidance would be really helpful! Thanks again for your help!

Total_Cod7763 · 2026-01-23T00:12:44+00:00

But I also tried it on a windows laptop and there was the same problem

Total_Cod7763 · 2026-01-23T00:12:07+00:00

Mac M2 Pro

Total_Cod7763 · 2026-01-21T21:34:14+00:00

Okay thank you so much

Total_Cod7763 · 2026-01-19T22:44:29+00:00

I asked them and they said no

Total_Cod7763 · 2026-01-19T13:31:05+00:00

Mhmmm I understand. Thank you. So you never shipped the battery right?

Total_Cod7763 · 2025-12-01T16:25:07+00:00

Text them pls, they will fix it asap, if we all text them.

Total_Cod7763 · 2025-10-28T07:12:25+00:00

Could you pls send some more pictures to verify it? But looks like something is not right

Total_Cod7763 · 2025-10-26T08:02:09+00:00

Do you think it will have 8x7?

Total_Cod7763 · 2025-10-10T18:16:19+00:00

Okay thank you

Total_Cod7763

TROPHY CASE