ReadyNAS Ultra 6 Plus

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oni228 wrote:

I am running RAIDiator 4.2.27 and I have 2x6TB and 2x3TB. How would I get them to show one big Raid 18TB like it should?

 

Physical capacity selected:

11427913

MB

Volume overhead (RAID/FS):

347804

MB

Maximum volume size:

11080109

MB

 

Thanks!

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What it should be showing you is 12 TB.  That is about 11,400 MiB and matches your physical capacity.  The rule for single-redundancy capacity is "sum the disks and subtract the largest".  You apparently want RAID-0 to span all disks.  That is extremely fragile.  If any disk fails, all 18 TB is lost.  

You are better off with jbod - that would give you 4 volumes (one for each disk).  That is invisible to the users, but it does require you to manage share size and approximately balance the storage used across the drives.  The benefit is that if when a disk fails, you only lose what is on that disk.  Data Recovery (if you ever need it) is also simpler.  One drawback - I think 4.2.x has a 4 volume limit - even on 6 bay systems.

The only way to change the RAID mode is to do a factory reset.  You will need to reconfigure the NAS, reinstall any addons, and restore all the data from backup drives.  Look up "flexraid" in the user manual (http://documentation.netgear.com/ultra/enu/202-10654-01/usermanual_1.pdf). 

There is some limits to the max volume size with 4.2.x systems.  You can't expand a volume over a 16 TiB ceiling.  You also can't expand it more than 8 TiB from its starting size.  

You can create a volume greater than 16 TiB if you start with all disks in place (and if expansion is not required to create the volume). If you wanted XRAID, that means that all the disks would need to be the same size.  I am not sure about RAID-0.  I don't think the 16 TiB volume expansion ceiling is an issue for spanning RAID-0 with mixed disk sizes - but I am not 100% certain of that.  

 If your Ultra is out of warranty (3 years) you might consider OS6.  That is not supported by Netgear (and I'm not strongly recommending it).  I'm just saying that if you are doing a reset anyway, its a natural time to switch over if you want to.