fvdw wrote:Thre are two sata bus, ata1 and ata2.
Ata1 has 3 connecters, the first 3 disks.
Ata2 has two connectors, the last two disks.
Ata1 is detected but sata link remains down meaning no disk can be detected or used. Cause most likely hardware defect on the mainboard.
Sorry but I think game over. You could disassemble the nas and check connectors or clean the mainboard. A lot of dust can slso cause issues although not likely
fvdw wrote:you have second 2big5 so you could put them in there to retrieve your data.
If you a linux pc with 5 sata port you could assemble the raid array and retrieve your data
create array with metadata 0.9 (required for autodetect in kernel)
mdadm --create /dev/md0 -e 0.9 --assume-clean --level=1 --force --raid-devices=1 /dev/sdb10
(force required if you use only 1 device in the array)
( -e is neeeded to set version ntype of superblock to be used values are 0.9 1.0 1.1... we want 0.9 for autodetect in kernel)
stopping an array
unmount first if mounted
mdadm --stop/dev/md0
starting an array (when you create it is started automatic, but after reboot you to start it)
mdadm --assemble /dev/md0 /dev/sdb10
remove array
if mounted unmount it
mdadm --stop /dev/md0
mdadm --remove /dev/md0 (necessary ?)
Once the array is removed you should us mdadm --zero-superblock on each of the component devices
in this case
mdadm --zero-superblock /dev/sdb10
This will erase the md superblock, a header used by mdadm to assemble and manage the component devices as part of an array.
If this is still present, it may cause problems when trying to reuse the disk for other purposes
get information of assembled arrays on the system
cat /proc/mdstat
get deatiled information of an array
mdadm --detail /dev/md0
Gives version number of superblock, in this case 0.9
This will also give info on which number will be used if version 0.9,
prefferred Minor: 0 --> md0
add arrays to conf file
mdadm --detail --scan >> /etc/mdadm.conf
examine member of a raid array
mdadm --examine /dev/sdb10 (amongst others gives version of superblock)
mdadm --assemble /dev/md0 /dev/sda8 /dev/sdb8 /dev/sdc8 /dev/sdd8 /dev/sde8
fvdw wrote:to assemble your array you will need this command
assuming the 5 disks are indentified by your linux system as sda, sdb, sdc,sdd and sde
- Code: Select all
mdadm --assemble /dev/md0 /dev/sda8 /dev/sdb8 /dev/sdc8 /dev/sdd8 /dev/sde8
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