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Author Topic: One drive has disappeared  (Read 9606 times)

deca66

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One drive has disappeared
« on: May 16, 2010, 03:07:27 PM »
Hi,

I have 2 1 TB drives on my DNS-323, with Firmware Version 1.07, since about one year and all worked fine. And suddendly, volume_2 has disappeared (either from Windows or when I connect directly with linux on the DNS).
When I connect to the DNS administration interface, I get the following message :
"Your new second hard drive will now be formatted"
and DNS asks me to format it.

I have done nothing on my DNS (not extracted any drive or whatever). What could had happened ?

Thanks,

deca66
« Last Edit: May 16, 2010, 03:10:22 PM by deca66 »
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gunrunnerjohn

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Re: One drive has disappeared
« Reply #1 on: May 16, 2010, 03:55:09 PM »
I'd probably remove it and test it on a computer first to see if the drive has died.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

deca66

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Re: One drive has disappeared
« Reply #2 on: May 17, 2010, 11:47:40 AM »
Quote from: gunrunnerjohn on May 16, 2010, 03:55:09 PM
I'd probably remove it and test it on a computer first to see if the drive has died.
Any other idea ? The fact is that I have currently no mean to test it on my computer.
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gunrunnerjohn

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Re: One drive has disappeared
« Reply #3 on: May 17, 2010, 12:16:18 PM »
If it has important data on it, I suggest you find a way.

Of course, you should have a backup of the data anyway, right?
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

deca66

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  • Posts: 47
Re: One drive has disappeared
« Reply #4 on: May 17, 2010, 01:53:45 PM »
Quote from: gunrunnerjohn on May 17, 2010, 12:16:18 PM
Of course, you should have a backup of the data anyway, right?
Of course, but not so fresh...

Quote from: gunrunnerjohn on May 17, 2010, 12:16:18 PM
If it has important data on it, I suggest you find a way.
Which way do you recommend ? Is there for example a kind of USB plugable stuff that would accept the disk ?
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gunrunnerjohn

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Re: One drive has disappeared
« Reply #5 on: May 17, 2010, 02:06:01 PM »
The best way to test a drive is a direct connection to a PC controller.  I've had mixed to poor results trying to diagnose a drive in a USB enclosure, just isn't as good as a direct connection.  To that aim, I have a SATA drive slot adapter to slide a SATA drive into my system for testing.  I also have another system with an IDE drive drawer for that kind of tests.

Like I said, how important is your data? ;)
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

deca66

  • Level 2 Member
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  • Posts: 47
Re: One drive has disappeared
« Reply #6 on: May 17, 2010, 02:23:54 PM »
Quote from: gunrunnerjohn on May 17, 2010, 02:06:01 PM
The best way to test a drive is a direct connection to a PC controller.  I've had mixed to poor results trying to diagnose a drive in a USB enclosure, just isn't as good as a direct connection.  To that aim, I have a SATA drive slot adapter to slide a SATA drive into my system for testing.  I also have another system with an IDE drive drawer for that kind of tests.

Like I said, how important is your data? ;)
This slot adapter is external or internal ? I don't know how to search it (in french ;-) ) Do you have an URL as an example to understand what it is ?
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gunrunnerjohn

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Re: One drive has disappeared
« Reply #7 on: May 17, 2010, 02:30:23 PM »
Here's one of many such kits: http://www.usb-ware.com/sata-removable-drive-value.htm
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

magic999

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Re: One drive has disappeared
« Reply #8 on: May 17, 2010, 03:01:47 PM »
I have 5 DNS-323's - 4 are configured with individual hard disks and one is configured as a mirrored RAID

One of the individual drive DNS-323s regularly reports only one drive present after a power interuption.

I then unplug the power and eject and reseat both the hard disks in it and it all goes back to normal with 2 drives found after a reboot.
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jamieburchell

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Re: One drive has disappeared
« Reply #9 on: May 18, 2010, 05:35:20 AM »
I wonder if the cooling of the unit during a power failure, then the heating up again could work the drive connector loose. Chip creep anyone ;)
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deca66

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Re: One drive has disappeared
« Reply #10 on: May 18, 2010, 11:17:42 PM »
Quote from: magic999 on May 17, 2010, 03:01:47 PM
...I then unplug the power and eject and reseat both the hard disks in it and it all goes back to normal with 2 drives found after a reboot.
Interesting...but I thought that when you unplug/plug disks, the DNS asks you to reformat them. No ?
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mohbandy

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Re: One drive has disappeared
« Reply #11 on: May 19, 2010, 04:37:36 AM »
My experience is that it doesn't ask you to reformat, but to resyncs your AV server
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magic999

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Re: One drive has disappeared
« Reply #12 on: May 19, 2010, 07:19:47 AM »
Quote from: deca66 on May 18, 2010, 11:17:42 PM
Interesting...but I thought that when you unplug/plug disks, the DNS asks you to reformat them. No ?

I unplug and reseat the hard disks whilst the DNS-323 is turned off - so the problem in my case is probably either a bad connection to one of the drives or a problem with the DNS-323 failing to find one of the drives when it boots up.

I have powered up one of my DNS-323's with the hard disks removed and then powered down and refitted them and then powered the DNS up again with no request to format the hard disks - the DNS-323 just recognises them again.
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deca66

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Re: One drive has disappeared
« Reply #13 on: May 24, 2010, 12:52:33 AM »
Quote from: magic999 on May 19, 2010, 07:19:47 AM
I have powered up one of my DNS-323's with the hard disks removed and then powered down and refitted them and then powered the DNS up again with no request to format the hard disks - the DNS-323 just recognises them again.
magic999, you're a magician ! Is works again for me. Thanks a lot.
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