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Forum Discussion
[RN102] Jbod boot up problem
Hi,
I bought the RN102 to upgrade from the previous ReadyNAS Duo. I'm running Win 7 sp 1 on a Zotac Ci320 nano.
I setup the RN102 to run with Flex raid and JBOD configuration. I put in two disk (1TB and 2TB), and I created two different volumes named DISC4 and DISC5 (so to continue from DISC1, 2 and 3 (not redundant unfortunately) from the previous ReadyNAS Duo), to manage them separatly.
From the old Nas Duo I copied disc 1 and 2 onto DISC5.
Then, with the RN102 and Duo turned off, I moved the old DISC1 into the new RN102, along with DISC5, formatted it and created a new JBOD volume named DISC1.
I copied part of DISC5 to DISC1 fine. I thought to finish in the morning and shut the RN102 down.
When I turned back on the bad surprise: [strike]DISC2[/strike] DISC1 was booted up correctly, but DISC5 was shown as empty.
From Windows file explorer there were showing all the shared directories I created but the one in DISC5 where not accessibles.
I then shut down the RN102 and tried to put back DISC4 only, which was empty, and it didn't show up as well.
I guess that what was on the original disc 1 is gone forever (since disc 5 isn't readable and the old one has been formatted for the new NAS, which use a differnet OS. I hope not. If you have any suggestion on how to recover it it would be fantastic), but before doing any more mistakes I would like to know how the RN102 treats JBOD, because I thought that making separates volumes would means that I would be able to switch between disks freely.
Thanks in advance.
PS: I hope I'll have better experience and luck here, as the Online support form Netgear liquidated me with these few lines:
"Hi Paolo ,
The readynas Duo and RN102 uses different operating systems, so if you insert a drive with data on the new NAS it will automatically reformat and delete all data contents."
I bought the RN102 to upgrade from the previous ReadyNAS Duo. I'm running Win 7 sp 1 on a Zotac Ci320 nano.
I setup the RN102 to run with Flex raid and JBOD configuration. I put in two disk (1TB and 2TB), and I created two different volumes named DISC4 and DISC5 (so to continue from DISC1, 2 and 3 (not redundant unfortunately) from the previous ReadyNAS Duo), to manage them separatly.
From the old Nas Duo I copied disc 1 and 2 onto DISC5.
Then, with the RN102 and Duo turned off, I moved the old DISC1 into the new RN102, along with DISC5, formatted it and created a new JBOD volume named DISC1.
I copied part of DISC5 to DISC1 fine. I thought to finish in the morning and shut the RN102 down.
When I turned back on the bad surprise: [strike]DISC2[/strike] DISC1 was booted up correctly, but DISC5 was shown as empty.
From Windows file explorer there were showing all the shared directories I created but the one in DISC5 where not accessibles.
I then shut down the RN102 and tried to put back DISC4 only, which was empty, and it didn't show up as well.
I guess that what was on the original disc 1 is gone forever (since disc 5 isn't readable and the old one has been formatted for the new NAS, which use a differnet OS. I hope not. If you have any suggestion on how to recover it it would be fantastic), but before doing any more mistakes I would like to know how the RN102 treats JBOD, because I thought that making separates volumes would means that I would be able to switch between disks freely.
Thanks in advance.
PS: I hope I'll have better experience and luck here, as the Online support form Netgear liquidated me with these few lines:
"Hi Paolo ,
The readynas Duo and RN102 uses different operating systems, so if you insert a drive with data on the new NAS it will automatically reformat and delete all data contents."
7 Replies
Replies have been turned off for this discussion
- Well yes the data on disk 1 is gone.
You say when you booted up disk 2 showed up , I thought you had put the old disk 1 in with disk 5; how does disk 2 get involved here?
What is not clear is why disk 5 is not coming up, you didn't change the slot it was in did you?
Have you tried booting the 102 with only disk 5 in ?
I would persist with support, the problem you are are asking them about is why disk 5 is not accessible. You had this setup correctly and even if you were to remove or change the disk in the other slot, it should have behaved as an independent volume.
I would also suggest that you should rethink the way you manage your data. The nas units hardware and the disks and the operating system are not designed to be used in the way you are.
...and of course, backup. vandermerwe wrote: Well yes the data on disk 1 is gone.
You say when you booted up disk 2 showed up , I thought you had put the old disk 1 in with disk 5; how does disk 2 get involved here?
What is not clear is why disk 5 is not coming up, you didn't change the slot it was in did you?
Have you tried booting the 102 with only disk 5 in ?
I would persist with support, the problem you are are asking them about is why disk 5 is not accessible. You had this setup correctly and even if you were to remove or change the disk in the other slot, it should have behaved as an independent volume.
I would also suggest that you should rethink the way you manage your data. The nas units hardware and the disks and the operating system are not designed to be used in the way you are.
...and of course, backup.
Yes, sorry. My mistake, I wrote DISC2 instead of DISC1.
And no, I didn't change the slot DISC5 was in. I also tried to boot up with only DISC5 in the NAS but I had the same result: empty. It also doesn't show the name volume in the System page.
You're right about how I manage my data, I should use a Raid 1 approach.- I would still ask support, they should help you.
Although you swapped out the disk that was in slot 1, there is no reason I can see why the volume on disk 5 should not still be accessible. - I've got this answer:
Hi Paolo ,
I apologize for the short answer, it appears that I did not understand the issue fully before responding. The new OS6 system configured raid as follows, JBOD starts with only 1 disk (you can add additional disk for expansion but not for protection). If you select Flex-Raid and inserted 2 drives, it will automatically format it as Raid 0,1. Please click on the link below for additional information:
http://kb.netgear.com/app/answers/detail/a_id/22808/~/what-is-flex-raid-and-how-does-it-work-with-my-readynas-os-6-storage-system%3F
So, as I read on the page linked, ti seems that jbod only supports 1 disk at a time. Then why I was able to use two disk more than once?
Still, it seems that managing jbod with the NAS is a bad idea.
This leaves me one problem to solve: trying at least to recover, if possible, the data on DISC5 (which has both the data on DISC1 and 2 on it), which is shown as empty but it's obviously not.
Should I ask on a linux forum? - jbod is fine, popping disks in and out a lot is the bad idea. One reason is that the SATA connectors on the drive are not designed for frequent insertion/removal.
StephenB wrote: jbod is fine, popping disks in and out a lot is the bad idea. One reason is that the SATA connectors on the drive are not designed for frequent insertion/removal.
Well, I started almost 4 years ago with the Duo and 640GB HDDs, since then I had grown quite a lot with data. I have almost 3TB and growing.
It's not that I swap in and out HDDs that frequently. When I fill an HDD I put in a new one. Sometimes I have to retrieve what's on older disks, but that doesn't happen so frequently.
This is an exception, because I have to move everything from the old Duo to the new RN102. I just thought that Jbod suited me better because I thought that I would be more free, for example, to move files from disk to disk without having to move it first to another external source.
It seems I was wrong though.- I use jbod on my backup NAS, but the disks remain in place. The idea is simply to maximize space.
With RAID you get a single volume, so you don't need to move files from disk to disk at all. Though given your current storage needs, I think an RN104 would have been a better choice than the RN102. Then you could fit everything on 2x4TB with single-failure protection and grow storage by adding a third 4 TB drive.
Though you can migrate the RN102 disks to an RN104 later on with no data loss.
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