RND4000 V2 - reports different disk capacities on Dashboard

[Fairperson]

I have recently purchased a RND4000 V2, hoping to supplement my existing V1 NAS. The V2 is fully populated with two (2) 2TB drives and two (2) 1TB drives. It's interesting to see that the System Dashboard view (Configure, System, Volumes tabs) under "Volumes" it reports the total capacity as 3.6 TB. Shown as /c, X-RAID2 (redundant), 1.7 TB free of 3.6TB. Hovering over the "i" icon also reports 3.6TB

But if I hover my cursor over the "Volume" LED at the bottom right of the dashboard screen. (four LEDS are represented as Volume, Fan, Temp and UPS) it tells me that total capacity is 5.4 TB with available space 3.1 TB (57%).

Running RAIDiator 5.3.3
Dashboard 1.0.0.168R

Any ideas which one is correct?

[mdgm-ntgr]

Can you try clearing your web browser cache (e.g. Temporary Internet Files)?

What do you see if you hover your mouse over the volume LED in RAIDar (http://www.readynas.com/downloads)?

[Fairperson]

Hi,

Cleared the cache, the Volume LED in RAIDar reports 1996 GB (54%) of 3687 GB. The LED on the Dashboard still reports 5.4TB.

Thanks.

[mdgm-ntgr]

Sounds like it is 3687GB then.

If you reboot your NAS does this have any effect? If not wait 5-10 minutes and try this again. It's possible vertical expansion hasn't yet started as the NAS is waiting for a reboot.

Can you download your logs (On the Dashboard, click Configure, then select Health > Logs > Download Logs) and extract the contents of the zip file? What does your disk_usage.log indicate?


Did you do a factory default with all disks in place? Not sure if this limitation still applies but if it does if you did a factory default with mixed drive capacities in place vertical expansion won't work. The solution is that you can do a factory default (wipes all data, settings, everything) with just the 1TB drives in place, then once the sync has completed hot-add the 2TB drives one at a time (they will be wiped and added into the array).

[Fairperson]

Greetings,

Tried a few things to resolve this without much luck. I think you are spot on with the NAS trying to do a vertical expansion as I was slowly introducing 2TB drives into the system one at a time, replacing the 4 x 1TB drives. On the third disk the system reported a disk failure and I re-inserted the 1TB drive while I ran diagnostics on the drive. After 48 hours of testing using WD diagnostics the 2TB drive looks Ok and I am inclined to believe the NAS V2 is a lot more "fussy" over the drives than the V1 model I have.

After spending nearly a month of trying to get this NAS ready for doing some real work I'll leave it as is until space becomes a problem. I'll just remember to back up a lot and await some sort of failure.

Thanks for your help & feedback.

[mdgm-ntgr]

2x2TB and 2x1TB would give about 3.6TB of space.

Disks can and do fail at any time. Now whilst it is possible the NAS made a mistake it's also possible that WD Diagnostics didn't detect a problem that exists.