What is the filesystem RN316 using as raid.

I have 6 raid disk used in RN316

Now I connected to these disks to another  machine and assmble the raid.

 

$sudo mdadm --assemble /dev/md130 /dev/sdf3 /dev/sde3 /dev/sdd3 /dev/sdc3  /dev/sdb3

mdadm: /dev/md130 has been started with 5 drives.

However, I can not mount this,

$sudo mount /dev/md130 /mnt/raid
mount: you must specify the filesystem type

it requre the filesystem type.

So I try this but in vain....

$sudomount -t ext4 /dev/md130 /mnt/raid
mount: wrong fs type, bad option, bad superblock on /dev/md130,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

Raid looks working

$sudo mdadm -D /dev/md130 
/dev/md130:
        Version : 1.2
  Creation Time : Wed Jun 11 08:24:46 2025
     Raid Level : raid0
     Array Size : 39045879040 (37237.05 GiB 39982.98 GB)
   Raid Devices : 5
  Total Devices : 5
    Persistence : Superblock is persistent

    Update Time : Wed Jun 11 08:24:46 2025
          State : clean 
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 64K

           Name : 0a438048:FILES-1
           UUID : 5cda431d:eb21dd6d:849d9d92:636a0c72
         Events : 0

    Number   Major   Minor   RaidDevice State
       0       8       83        0      active sync   /dev/sdf3
       1       8       67        1      active sync   /dev/sde3
       2       8       51        2      active sync   /dev/sdd3
       3       8       35        3      active sync   /dev/sdc3
       4       8       19        4      active sync   /dev/sdb3

$less /proc/mdstat

Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] 
md130 : active raid0 sdf3[0] sdb3[4] sdc3[3] sdd3[2] sde3[1]
      39045879040 blocks super 1.2 64k chunks