NS40G file systems exist but won't mount

Inherited this system as part of a re-org of several large departments.

Warranty had lapsed and they have already moved most of the shares over to a new NAS.

NS40G with a CX3-80 back end.

Problem is there is an archive folder which they did not move and all files must be kept for 50 years.

So I need to get the data back to the other NAS.

Server can see and ping the Celerra, but no mount points are available.

Celerra GUI reports the File System ARCHIVE as being present and status OK

However when I look at the Mount tab for Archive, i see the following

"File system properties cannot be modified because the file system is temporarily unmounted"

Server_df server_2 results in Error 2: server_2 : No such file or directoryer

Server_mount server_2 results as follows

server_2 :

root_fs_2 on / uxfs,perm,rw,

root_fs_common on /.etc_common uxfs,perm,rw,

root_fs_vdm_vdm01 on /root_vdm_1/.etc uxfs,perm,rw,

imagecache01 on /imagecache01 uxfs,perm,rw,

archive on /archive uxfs,perm,rw,

server_mountpoint server_2 -list results as follows

/.etc_common

/root_vdm_1

/root_vdm_1/.etc

/imagecache01

/archive

server_mountpoint server_2 -exist /archive      results as follows

server_2 : /archive : exists

server_umount server_2 -perm /archive          results in the following

server_2 :

Error 10281: server_2 archive : unable to unmount. Cannot determine file system status from the server

server_df server_2 /archive               results in the following

Error 2: server_2 : No such file or directory

failed to complete command