I will try to explain to you that there is no difference between the models here, as well as QTS or QuTS hero.
The main thing is that the sync operation is different and three times more.
Both NAS have nvme assembled as qtier.
The idea is that before QuTS hero Upgrade from v5.xxx to 6.xxx copying was more or less the same, but now QuTS hero v6.xxx then copying is longer
Hi, based on our internal testing, we haven’t been able to reproduce the sync speed difference you mentioned.
To help us investigate this further, would you mind opening a Support Ticket? This will allow our technical team to take a closer look at your specific environment and logs. Thanks!