same NAS, same folder, but different groups showed in two different hosts, why?

I have a strange behaviour with a shared NAS between multiple hosts. Every host reaches a shared folder mounted on /sharedfolder on the same source (##.###.###.###:/filesystem, where ## are the numbers of the original ip address). On the **Host1** is shown the group httpd on the folder /sharedfolder, but on the Host2 is shown mygroup for the same resources. How's possible and what should I do in order to obtain the same group information on each host? **Host1:** [myuser@host1 sharedfolder]$ df -h File system Dim. Usati Dispon. Uso% Montato su /dev/mapper/vg_root-lv_root 97G 4,4G 93G 5% / devtmpfs 2,0G 0 2,0G 0% /dev tmpfs 2,0G 0 2,0G 0% /dev/shm tmpfs 2,0G 84M 1,9G 5% /run tmpfs 2,0G 0 2,0G 0% /sys/fs/cgroup /dev/sda1 1014M 130M 885M 13% /boot ##.###.###.###:/filesystem 61G 3,0G 58G 5% /sharedfolder tmpfs 395M 0 395M 0% /run/user/1001 [myuser@host1 ~]$ cd /sharedfolder/ [myuser@host1 sharedfolder]$ ll totale 16 drwxrwxr-x 3 root httpd 4096 4 dic 10.50 folder1 drwxrwxr-x 2 myuser httpd 4096 29 apr 16.49 folder2 drwxrwxr-x 5 root httpd 4096 13 feb 23.09 folder3 drwxrwxr-x 3 myuser httpd 4096 21 apr 15.12 folder4 **Host2:** [myuser@host2 ~]$ df -h File system Dim. Usati Dispon. Uso% Montato su /dev/mapper/vg_root-lv_root 97G 45G 53G 46% / devtmpfs 7,9G 0 7,9G 0% /dev tmpfs 7,9G 0 7,9G 0% /dev/shm tmpfs 7,9G 76M 7,8G 1% /run tmpfs 7,9G 0 7,9G 0% /sys/fs/cgroup /dev/sda1 1014M 130M 885M 13% /boot ##.###.###.###:/filesystem 61G 3,0G 58G 5% /sharedfolder tmpfs 1,6G 0 1,6G 0% /run/user/0 /dev/mapper/vg_fs-lv_fs 400G 295G 106G 74% /anothervolume tmpfs 1,6G 0 1,6G 0% /run/user/1001 [myuser@host2 ~]$ cd /sharedfolder/ [myuser@host2 sharedfolder]$ ll totale 16 drwxrwxr-x 3 root mygroup 4096 4 dic 10.50 folder1 drwxrwxr-x 2 myuser mygroup 4096 29 apr 16.49 folder2 drwxrwxr-x 5 root mygroup 4096 13 feb 23.09 folder3 drwxrwxr-x 3 myuser mygroup 4096 21 apr 15.12 folder4