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NAS200 Raid 1 -- replacing drive

Discussion in 'Cisco/Linksys Network Storage Devices' started by BeerFizz2, Oct 13, 2010.

  1. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    Hi,

    I have a NAS200, with firmware version: V3.4R79.

    I have two drives: WDC WD1001FALS-0 -- RAID 1 - (Journaled)

    In the status page I have the following:

    Information
    Disk Model Status
    Disk 1 Not Installed
    Disk 2 WDC WD1001FALS-0 Used by RAID 1

    I assume the Disk 1 is hard down, so I have ordered another and that should be here within 2 days.


    I have read a couple of posts regarding replacing the drive and it seems that if Disk 2 is the issue, then powering off, replacing the drive and powering on does trick, however this is not the case if the Disk 1 goes bad. I also read that one cannot take Disk 2 and put it in the drive 1 slot and the new Disk into the drive 2 slot.

    What, please, is the recommended method for replacing Disk 1 and causing Disk 1 to be re-silvered from Disk 2?

    I hope that made sense?

    Thanks in advance for all help
    Best
    Phil
     
  2. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    The same is true if disk 1 goes bad: just power the NAS down, replace the broken disk and power it up again. The NAS will rebuild the RAID automatically.

    ===Jac
     
  3. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    Hi Jac,

    Thanks for the reply. I'll let you know if it works in a day or so when my disk arrives.

    Phil
     
  4. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    Jac,

    This is the situation:

    My new disk arrived, so I powered down the NAS200, opened the top bay and replaced Old Disk 1 with New Disk 1. I powered up the device, waited until it double beeped and then connected to it.

    With New Disk 1 installed, it says that disk1 is idle and disk2 is not installed. See attached pic. I am unable to see any files and there are no users registered. On the device the disk1 light is lit up and 2 is dark.

    I reversed the procedure and put the Old Disk 1 back in and I'm back to where I started. See attached pic. I am now able to see my files and the users are again registered. On the device, disk1 light is dark and 2 is lit.

    Please advise.

    PS... I really do not want to loose this data. :confused:
     

    Attached Files:

  5. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    Hi Jac,

    I messed around with this some more...

    This time I removed Disk 2 and left it out.
    I replaced Old Disk 1 in the upper bay.
    Powered it up.

    See attached pic.

    I am able to view the contents of Disk 1, in the upper bay.

    Not sure what this means, but certainly, both physical drives appear to be good.

    Please advise,
    Phil
     

    Attached Files:

  6. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    From the previous status of having a functioning Old Disk 1 in the upper bay, I inserted the new Disk into the lower bay as well... see attached:

    Thoughts?

    Thanks Jac
    Phil
     

    Attached Files:

  7. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    A little bit more information.

    After some period of time (maybe ~10 hours), part of the system seems to go off line.

    I am able to connect to the administration pages as admin, but I'm unable to connect to the disk as a user.

    Rebooting solves the issue. However pressing the button to reboot does not work, you have to power off and back on.

    Phil


    ETA: Shutdown Now from the Systems Option page does work.
     
  8. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    While the power is off, attach the old (working) disk 2 into bay 2. Remove the (non-working) disk 1 from bay 1 and put the new disk into bay 1.

    Don't move the old disk 2 to bay 1 or something like that, just leave the working disk where it is: in bay 2.

    If the new disk is at least the same size as the old broken one, I believe it should start rebuilding the RAID (it should show this by blinking the disk LEDs). I have to say I don't use RAID so I'm not sure, but I don't think you need to reconfigure anything. Check the disk configuration page and see if you need to add the new disk as part of the RAID1 array or something; it should be pretty obvious, I reckon.

    If anything, you can always connect both drives to a PC running SystemRescueCD and rebuild the array manually by using a couple of well-composed mdadm commands. That should go much faster too (rebuilding a 1TB RAID array probably takes more than a day on the NAS200, but may take less than an hour on a PC).

    If the NAS "goes offline" after a while, it probably means your hard disks are overheating (yeah, the NAS200 is kinda notorious for having a crappy cooling system).

    To shut the NAS down, simply push the power button. It will beep almost right away to confirm (it may take a few seconds if it's busy e.g. if you're running the media server), and after a minute or so the lights will go out. That's when you can unplug the power and/or remove/replace disks safely. Don't just yank the power cord unless it's not responding to the power button.

    There is no "reboot" button. The reset button can be used to reset the network settings and/or the admin password but doesn't reboot the system.

    ===Jac
     
  9. BeerFizz2

    BeerFizz2 Networkin' Nut Member

    Hi Jac, thanks for the response. This is what I did first and I detailed the result in (I think) my third post on this thread. I tried several combination's and in all cases it refused to re-silver my new drive.

    AH.. when I said reboot button, I actually meant the power button on the back top right. And this failed to respond when the device got into the situation it was in, however, although as a user, I could not access files, as an admin I was able to access the admin pages and do a soft shutdown.

    The new disk is identical to the old disks as you can see from the previously attached images. I have read elsewhere that other users have had similar issues when one of the disks in a RAID 1 configuration fails. For me, in whichever configuration, (good disk in top, new in bottom or vice versa) the system failed to rebuild the new disk. Troubling, as this is the primary reason for using RAID.


    I may do that, however, at the moment both drives appear to be physically good and to contain valid information. I can continue to access the data through the Nas200, albeit with only one drive installed.

    I think I will purchase the Synology DS410J and hang this off my net as well. Then I will copy over to that, the relevant files from the Nas200 and continue from there.

    This failure of the Nas200 to resilver when an issue occurred is disturbing and sort of removes any confidence one might have had in the device. Consequently, after I have the Synology set up, I may keep it as a NAS Server , but certainly not running RAID 1 with sensitive files, or I may just scrap it.

    In summary, at this point I believe that either the hardware of the NAS200 has an issue, or the software is incapable of correctly managing RAID.

    Thanks for all you help
    Phil
     

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