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Author Topic: Rebuilding - Is this normal behaviour  (Read 13706 times)

JavaLawyer

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Re: Rebuilding - Is this normal behaviour
« Reply #15 on: July 06, 2011, 05:25:16 PM »
A failing HDD will cause a degraded RAID array.  With no symptoms, attempting to isolate the problematic drive can prove difficult (i.e. trial and error) since you have 3 drives to choose from.
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Clayton

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Re: Rebuilding - Is this normal behaviour
« Reply #16 on: July 06, 2011, 05:41:15 PM »
If one of the other 3 drives are faulty will it show up using the manufacture diagnosis disk? if I was to test the drives in another computer?
I'm just trying to figure out if the drives are causing the degrade or the NAS, but reading through the fourms seems to be a major problem with RAID 5 on these units. Shame on you DLINK!!!
« Last Edit: July 07, 2011, 12:10:58 AM by Clayton »
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JavaLawyer

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Re: Rebuilding - Is this normal behaviour
« Reply #17 on: July 07, 2011, 04:15:12 AM »
Quote from: Clayton on July 06, 2011, 05:41:15 PM
If one of the other 3 drives are faulty will it show up using the manufacture diagnosis disk? if I was to test the drives in another computer?
I'm just trying to figure out if the drives are causing the degrade or the NAS, but reading through the fourms seems to be a major problem with RAID 5 on these units. Shame on you DLINK!!!

One would "think" that the disk diagnostic would work. If this is a failing disk, I think the real issue is determining what criteria the DNS-343 is using to flag the drive as bad. Once you have that information, you can test for it.
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Clayton

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Re: Rebuilding - Is this normal behaviour
« Reply #18 on: July 07, 2011, 01:50:20 PM »
I agree with you on that, I've just tested all my drives and they are in perfect working order.
FYI, after creating a RAID 5 Volume and transferring a ton of data to it, is when I get the dregraded message, maybe it's hitting a 2TB treashold or something like that. I read somewhere that a workaround for this was to remove and reinsert the problem drive while the unit is still running but carn't find the post anywhere now.
I think I'll be happy with creating 4 single volumes, I can not see the point of having RAID now if I have everything else backed up elsewhere
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JavaLawyer

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Re: Rebuilding - Is this normal behaviour
« Reply #19 on: July 07, 2011, 02:36:31 PM »
Quote from: Clayton on July 07, 2011, 01:50:20 PM
I read somewhere that a workaround for this was to remove and reinsert the problem drive while the unit is still running but carn't find the post anywhere now.


FYI: The DNS-343 is not hot-swappable, i.e. you can't pull HDDs from the DNS-343 while the unit is running. I can't see that ending well.

Again. . . best of luck.
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