TVS-672XT LAN LED continuously flashing

[Santa_Maria]

Hi community,

I have had assembled, installed and configured two TVS-672xT. The assembled devices are: 5x WD 4TB, 1x Samsung 860 1TB and one m.2 bar Samsung 970 mit 1TB for caching.

This machine is intended for hot and cold data storage, no servers like WEB, media or so. It works fine, also thunderbolt works fast, as expected.
The synchronizing of the 5 RAID5 disks is finished, the HD LEDs shine constant, no activities at the HDs.

BUT: the orange LAN-LED flashes continuously and with constant frequency about 5 times per second (5Hz).

No activities inside the network, no forwarded ports from outside.

These are no normal network access, I interpret this as fault or error warning.
I tried to shut down most of the services, but without success.

Do you have some hints for me.
Br Karl

[P3R]

BUT: the orange LAN-LED flashes continuously and with constant frequency about 5 times per second (5Hz).

No activities inside the network, no forwarded ports from outside.

In any local network you'll have constant activity, it's never quiet. At the very least you'll have regular broadcasts that must be received to determine that they're not intended for the NAS.

Start using Wireshark if you want to go deep down technically into what really happens on your network.

Unfortunately the Qnap User Guides are slightly misleading when they say that network LED activity always mean that the "NAS is being accessed from the network".

[Santa_Maria]

Thx for the reply.

Yes, I know that there are lot of broadcasts on LAN, and yes, I know the rhythm of flashing such LAN LEDs; I have got additionally also two Qnap's a long time (TS-419+ TS-221).
But I 've never seen such obtrusive common mode flashing without any break. At the other side of the LAN cable at the switch end, the LED stand still, at times it flashes.