Can my 4.2.2x (Ultra 6) disks be accessible on a OS6 system ?

Question

Hi,&nbsp;My Ultra 6 (4.2.2x) died on me yesterday. It won't go past the bootlogo. Also the procedure with going into the bootmenu doesn't work with or without the disks.The disks were ok before this happened so i called Netgear support NL.They assured me that i could just pop these disks in a OS6 system(ofcourse in the same order) like a 316 and they would be accessible again.Although some functions wouldn't be available the shares would be accesible.I could then backup this to another NAS and , reset and factory reset the new unit and then put the data back again.&nbsp;Could someone confirm this and explain how and what happens when i do this ?Offcourse i am a little anxious that the unit would start formatting these unknown and 'old' disks.Does it matter that OS6 uses btrfs and the 4.2.2x ?&nbsp;I got my hands on a Pro 6 with OS6.5 on it, factory defaulted and all. Does this change anything or matter here ?I hope somebody has some answers for me.&nbsp;rgrds Mike&nbsp;&nbsp;

JennC · Answer

Hello MichaelR64,

&nbsp;

You might want to look at&nbsp;ReadyNAS: Migrating disks from RAIDiator 4.2 to ReadyNAS OS 6 (x86)&nbsp;article.

&nbsp;

Hope this helps.

&nbsp;

Regards,

MichaelR64 · Answer

Ok,&nbsp;So i took the plunge and installed the disks in the other (working) Pro 6 system.It boots and even displays frontview.However it notes the volume as being offline.All disks are being seen as fine, as i had expected since i had no problems with these in the first place.I logged in tru ssh and ran fdisk -l to get some more info. (I found this somewhere else n the forum).(I noticed something else: the previous owner claimed he had upgraded the unti to OS6.5 but since the os runs from the disk my setup offcourse shows 4.2.26.)Also the display on the unit keeps displaying 'Booting' .&nbsp;Does anybody now why the volume &nbsp;is offline and how can i get it online ?&nbsp;Is this behaviour also to be expected when i put these disks in a new 316 ?If not i could just go out and buy a 316 if that solves it.I have already bought some big usb drives because support told me that the volume would get online but in some kind of readonly mode.(So i could offload the data to a usb drive and do a factory reset).&nbsp;I have logs downloaded as well, if anyone is interested.Output is posted below.nas-EB-0B-D5:~# fdisk -l
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sda: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): 6ef40563-79ef-4d6a-a469-243cea1e8141
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sdb: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): 3769a122-b786-4452-8a59-35078f0be5ca
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sdc: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): fc68665e-f386-4bb2-a4bc-76a5e03c6f4e
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sdd: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): b53142a5-e367-4807-8eb5-9c44396bdb70
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sde: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): 622c9f83-44c7-45bf-9082-ba75ce428b73
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700
fdisk: device has more than 2^32 sectors, can't use all of them
Found valid GPT with protective MBR; using GPT

Disk /dev/sdf: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): 358e1235-489c-4db1-ada2-c473f8f03925
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134

Number  Start (sector)    End (sector)  Size       Code  Name
   1              64         8388671       4096M   0700
   2         8388672         9437247        512M   0700
   3         9437248      5860529072       2790G   0700

Disk /dev/md0: 4293 MB, 4293906432 bytes
2 heads, 4 sectors/track, 1048317 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md0 doesn't contain a valid partition table
fdisk: device has more than 2^32 sectors, can't use all of them

Disk /dev/dm-0: 2199.0 GB, 2199023255040 bytes
255 heads, 63 sectors/track, 267349 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-0 doesn't contain a valid partition tablevolume log:===== pvscan =====
  PV /dev/md2   VG c   lvm2 [13.62 TB / 10.00 GB free]
  Total: 1 [1.62 TB] / in use: 1 [1.62 TB] / in no VG: 0 [0   ]
===== vgscan =====
  Reading all physical volumes.  This may take a while...
  Found volume group "c" using metadata type lvm2
===== lvscan =====
  ACTIVE            '/dev/c/c' [13.61 TB] inherit
===== vgdisplay =====
  --- Volume group ---
  VG Name               c
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  7
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               13.62 TB
  PE Size               64.00 MB
  Total PE              223201
  Alloc PE / Size       223041 / 13.61 TB
  Free  PE / Size       160 / 10.00 GB
  VG UUID               DTkKdS-BNwO-fUyz-jen7-e5GV-DqZH-eN91py
   
===== lvdisplay /dev/c/c =====
  --- Logical volume ---
  LV Name                /dev/c/c
  VG Name                c
  LV UUID                7rRXpm-r4zh-RUlD-DgKw-AHDU-8iIe-RRe7W5
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                13.61 TB
  Current LE             223041
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           251:0
   
===== dumpe2fs /dev/c/c =====
dumpe2fs 1.42.8 (20-Jun-2013)
Filesystem volume name:   &lt;none&gt;
Last mounted on:          /c
Filesystem UUID:          121e0cd1-f544-401b-896c-31df123da04f
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash 
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Remount read-only
Filesystem OS type:       Linux
Inode count:              228395008
Block count:              3654303744
Reserved block count:     12500000
Free blocks:              813475891
Free inodes:              227843032
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      305
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         2048
Inode blocks per group:   128
RAID stride:              16
RAID stripe width:        80
Flex block group size:    16
Filesystem created:       Thu Aug 16 22:55:04 2012
Last mount time:          Sat Aug 15 06:15:22 2015
Last write time:          Sat May 28 11:42:11 2016
Mount count:              22
Maximum mount count:      -1
Last checked:             Thu Aug 16 22:55:04 2012
Check interval:           0 (&lt;none&gt;)
Lifetime writes:          49 TB
Reserved blocks uid:      0 (user unknown)
Reserved blocks gid:      0 (group unknown)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      821b1544-bad0-432e-b613-f03d086917cc
Journal backup:           inode blocks
Journal features:         journal_incompat_revoke
Journal size:             128M
Journal length:           32768
Journal sequence:         0x00a509eb
Journal start:            0

===== fstab =====
#-----------------------------------------------------------------------------
# &lt;device&gt;         &lt;mount&gt;              &lt;type&gt;     &lt;options&gt;    &lt;freq&gt; &lt;pass&gt;
#-----------------------------------------------------------------------------
/dev/md0           /                    ext3       defaults,noatime,nodiratime      0      0
proc               /proc                proc       defaults          0      0
/dev/md1           swap                 swap       defaults          0      0
/dev/c/c           /c                   ext4       defaults,acl,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv1,noatime,nodiratime      0      2partition log:***** partition output for sda *****

Disk /dev/sda: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 6EF40563-79EF-4D6A-A469-243CEA1E8141
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)