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Post by kuro11 on Aug 3, 2008 11:14:04 GMT 7
I am about to purchase a Thecus N5200B PRO to replace my onboard RAID-5. However, I have a serious question. If the RAID controller on this NAS fails, assuming drives are ok, will another NAS of same (or similar, I am wondering how close it needs to be) recognize the RAID (RAID-5 is what I will be doing) from the old device, should I replace it. I just want confirmation, because I have read from several other sources on the internet that this is the case, that most higher end RAID controllers WILL instantly recognize a old RAID.
So if any of you have experience with this sort of thing let me know. I realize that it would be more likely for the discs to give out since I will be hooking this sucker to a nice UPS, but I realize that 4 or 5 years down the line is a healthy lifespan, and moving the discs over to a new NAS (Another Thecus right?) might be an issue, but I hope not.
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Post by peterfu on Aug 3, 2008 13:10:03 GMT 7
The N5200 has no raid controller - it uses standard linux software raid. If Your N5200 fails due to a hardware problem, you can just put in your discs in another N5200 and everything is detected automatically. Theoratically You can put in Your discs also in another linux box to restore Your data, cause linux software raid has stored all raid information on the harddisc itself (no configuration files needed). br Peter
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Post by kuro11 on Aug 3, 2008 13:35:02 GMT 7
Heh, shows what I know... Thanks so much for the information, that eases my worries quite a bit know that I can always upgrade the NAS to another Thecus if this one dies down the road for some random reason.
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Post by inerlogic on Mar 5, 2010 23:58:29 GMT 7
The N5200 has no raid controller - it uses standard linux software raid. If Your N5200 fails due to a hardware problem, you can just put in your discs in another N5200 and everything is detected automatically. Theoratically You can put in Your discs also in another linux box to restore Your data, cause linux software raid has stored all raid information on the harddisc itself (no configuration files needed). br Peter Hey Peter, sorry to resurrect this ancient post.... but do you know of anyone who has tried this? i thought there was a thread here about transferring the drives to a linux box to access the data in case of hardware failure with the N5200, but the forum search is about as useful as tits on a bull... i've run Slack, SUSE, RedHat and ubuntu in the past (currently running OpenSolaris for it's RAID-Z capabilities) and am looking to move 5 drives from my N5200PRO to the Solaris or a linux box....
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Post by peterfu on Mar 6, 2010 15:18:26 GMT 7
Yes, this was done from someone here and also decsribed very well (I also don't find it now). As far as I remeber You need on the box lvm and mdadm. br peter
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Post by synthaxx on May 6, 2010 1:01:32 GMT 7
Here's how i did it:
Connect your drives to a linux machine with mdadm (i used my n5200 with ubuntu), and issue the following commands
mdadm --assemble /dev/dm0 /dev/sd[bcdef]2 Which will assemble the previousely made array.
/edit: forgot a crucial part...namely the lvm array DO'H!
On debian like OS's do:
apt-get install lvm2
then
vgscan
which will find the volume group
then do a:
vgchange -ay
which will find the 2 logical volumes and put them in /dev/vg0
lastly, mount the volume with
mount /dev/vg0/lv0 /raid
Sorry for the messup
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