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Time to replace my Duo V2, advice appreciated
My RND2120 v2 is no longer supported, and I have had it running 24/7 for about 5 years. So it is time to replace it. I have also received a warning that one of my HD's is about to fail. I use...
BigAl1 wrote:
i.e. I can only see drive 1.
No, what you see is volume C. You don't access the disk, you access the RAID volume.
Netgear say to replace the drive with an identical drive, are they talking about the capacity, or the same make and model? Bearing in mind the drive is 5 years old, I doubt if I would find an identical replacement.
The drives need to be the same size. They don't need to be identical - one could be Western Digital and the other Seagate for instance. You shouldn't be looking for an identical model - as you say its an outdated design.
I think that I can, replace Drive 1 with a new drive of the same capacity (2TB). Drive 2 will then copy everything back to Drive 1. When this is completed, I was thinking about replacing Drive 2 with the second new drive.
Basically yes. You remove drive 1 with the system running, then hot-insert the first replacement. The NAS will rebuild the RAID mirror, copying everything from drive 2 to drive 1. After that completes, you can replace drive 2 and the NAS rebuilds again, copying everything from drive 2 to drive 1.
It is recommended to make a backup before you do this. Rebuilding the array does stress both drives, and if a drive fails during the process you will lose your data.
BigAl1 wrote:
So then I was thinking about replacing the ReadyNAS Duo with a ReadyNAS 200 with 4 Bays.
So more questions.
If Bay 1 is say Drive ‘F’, and Bay 2 is set to mirror Drive ‘F’, could I then set up Bay 3 as say Drive ‘G’ and set Bay 4 to mirror Drive ‘G’, assuming that I buy more HDD’s.
Can I also have a 2TB in Bay 1 and 2 and say a 4TB in bays 3 and 4?
If you use the default XRAID, then you wouldn't actually have a mirror like you have now. If you had 4x2TB installed, you'd have a 6 TB volume, and still have protection from a single drive failure. You can have 2x2TB+2x4TB - that would give you an 8 TB volume. The rule is to sum the drives and subtract the largest.
The order you add the drives to the array matters. Each drive you add has to be at least as large as the biggest one currently installed.
BigAl1 wrote:
i.e. I can only see drive 1.
No, what you see is volume C. You don't access the disk, you access the RAID volume.
Netgear say to replace the drive with an identical drive, are they talking about the capacity, or the same make and model? Bearing in mind the drive is 5 years old, I doubt if I would find an identical replacement.
The drives need to be the same size. They don't need to be identical - one could be Western Digital and the other Seagate for instance. You shouldn't be looking for an identical model - as you say its an outdated design.
I think that I can, replace Drive 1 with a new drive of the same capacity (2TB). Drive 2 will then copy everything back to Drive 1. When this is completed, I was thinking about replacing Drive 2 with the second new drive.
Basically yes. You remove drive 1 with the system running, then hot-insert the first replacement. The NAS will rebuild the RAID mirror, copying everything from drive 2 to drive 1. After that completes, you can replace drive 2 and the NAS rebuilds again, copying everything from drive 2 to drive 1.
It is recommended to make a backup before you do this. Rebuilding the array does stress both drives, and if a drive fails during the process you will lose your data.
BigAl1 wrote:
So then I was thinking about replacing the ReadyNAS Duo with a ReadyNAS 200 with 4 Bays.
So more questions.
If Bay 1 is say Drive ‘F’, and Bay 2 is set to mirror Drive ‘F’, could I then set up Bay 3 as say Drive ‘G’ and set Bay 4 to mirror Drive ‘G’, assuming that I buy more HDD’s.
Can I also have a 2TB in Bay 1 and 2 and say a 4TB in bays 3 and 4?
If you use the default XRAID, then you wouldn't actually have a mirror like you have now. If you had 4x2TB installed, you'd have a 6 TB volume, and still have protection from a single drive failure. You can have 2x2TB+2x4TB - that would give you an 8 TB volume. The rule is to sum the drives and subtract the largest.
The order you add the drives to the array matters. Each drive you add has to be at least as large as the biggest one currently installed.
Thanks Stephen
'Volume C' as opposed to 'Drive C' I see what you mean, just looked at it through the ReadyNAS Duo setup software.
 | Disk 1 | Seagate ST32000542AS 1862 GB , 41 C / 105 F , Write-cache ON | OK |
| Disk 2 | Seagate ST2000DL003-9VT166 1862 GB , 39 C / 102 F , Write-cache ON |
Then I see the above, although I can only see the content of Disk 1 being as I take it Disk 2 is a mirror of Disk 1
Now, making a backup. Like most I thought that the second HD was my backup, after reading lots todayI realise that isn't so.
So I guess that if I were to buy a 3TB external HD, connect it to the USB port on the front of the NAS Drive and push the 'Backup Button' the content of my HDD will be automatically backed up to the external USB Drive.
There seems to be nothing about 'how' to backup in the manual, although it does show the button.
BigAl1 wrote:
Thanks Stephen
'Volume C' as opposed to 'Drive C' I see what you mean, just looked at it through the ReadyNAS Duo setup software.
Disk 1 Seagate ST32000542AS 1862 GB , 41 C / 105 F , Write-cache ON OK Disk 2 Seagate ST2000DL003-9VT166 1862 GB , 39 C / 102 F , Write-cache ON Then I see the above, although I can only see the content of Disk 1 being as I take it Disk 2 is a mirror of Disk 1
I'd be happier if I saw an "OK" status on disk 2. Can you post a screen snapshot of the volume page of the web ui?
BigAl1 wrote:
So I guess that if I were to buy a 3TB external HD, connect it to the USB port on the front of the NAS Drive
Your NAS might not support 3 TB drives. What firmware is it running? 4.1.x or 5.x.x?
On the how-to, you'd start by creating a backup job in the admin ui.
Well I've 'bit the bullet' and ordered a new RN204 with 2 x 2TB Enterprise Drives.
They should all be here tomorrow.
In the meantime, overnight I have copied everything on my NAS Drive back to my PC, so all is not lost.
My Firmware Version is 4.1.14
BigAl1 wrote:
My Firmware Version is 4.1.14
Then you have a duo v1, and your system does not support 3 TB drives.
http://www.rnasguide.com/2012/01/09/how-to-tell-whether-i-have-a-duo-v1-or-duo-v2-or-nv-v1-or-nv-v2/
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