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Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

retosteffen
Aspirant

readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Hi,

I have an old NV+ and was thinking about upgrading but was looking for a dual-disk redundant system.
Sadly the website isn't particularly clear (or I'm not looking at the right pages). Does the new 104 support dual-disk redundancy (Raid 6)?

It seems (http://kb.netgear.com/app/answers/detail/a_id/22808) that flex-raid does raid 6 with at least 4 disk (so the 104 should be able to).
And is it true (http://kb.netgear.com/app/answers/detail/a_id/22802) that XRaid2 only does single disk redundancy?

Any help would be appreciated.
Hava a nice day
Message 1 of 12
mdgm-ntgr
NETGEAR Employee Retired

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

You should be able to use RAID-6 but performance won't be very good. I would recommend getting the RN314, RN316 or RN516.

You should be able to switch to Flex-RAID (i.e. disable X-RAID), delete the volume, create a RAID-6 volume then switch back to X-RAID.
Message 2 of 12
retosteffen
Aspirant

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Thanks for the quick reply.
So XRaid should keep the RAID setting, once the readynas is in RAID6 and not go back to RAID5?
Message 3 of 12
mdgm-ntgr
NETGEAR Employee Retired

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Yes
Message 4 of 12
retosteffen
Aspirant

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Perfect. Many thanks!!
Message 5 of 12
TeknoJnky
Hero

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

mdgm wrote:

You should be able to switch to Flex-RAID (i.e. disable X-RAID), delete the volume, create a RAID-6 volume then switch back to X-RAID.



Whaaaatt??

unless os6 has changed this, you can't switch from flex-raid to x-raid modes or vice versa without factory defaulting again.
Message 6 of 12
StephenB
Guru

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

TeknoJnky wrote:
mdgm wrote:

You should be able to switch to Flex-RAID (i.e. disable X-RAID), delete the volume, create a RAID-6 volume then switch back to X-RAID.



Whaaaatt??

unless os6 has changed this, you can't switch from flex-raid to x-raid modes or vice versa without factory defaulting again.
With OS6 you can switch. The existing volume(s) are deleted, but the OS settings, add-ons, etc. are preserved.

I haven't seen an option to switch w/o deleting volumes though, so I am a bit confused also.
Message 7 of 12
mdgm-ntgr
NETGEAR Employee Retired

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

With OS6 you can switch. I've tried it with one volume in my RN516 and it does not delete the volume as far as I could tell.
Message 8 of 12
StephenB
Guru

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

mdgm wrote:
With OS6 you can switch. I've tried it with one volume in my RN516 and it does not delete the volume as far as I could tell.
It did on my RN102, but that was with the first beta firmware.
Message 9 of 12
mdgm-ntgr
NETGEAR Employee Retired

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Well in my RN516 running 6.0.8 I was able to do it. I have a 6-drive RAID-6 array that I converted to a X-RAID2 array.
Message 10 of 12
retosteffen
Aspirant

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

I'm still slightly confused.
Has anyone had success with a 4 disk system and XRaid2 as a Raid6?
And are you sure that afterwards XRaid2 really has dual disk redundancy?
Message 11 of 12
mdgm-ntgr
NETGEAR Employee Retired

Re: readynas 104 dual-disk redundancy? Flex Raid and XRaid2

Disable X-RAID, delete the volume, create a RAID-6 volume (at least four disks must be installed to use this), switch back to X-RAID and download the logs. Have a look at mdstat.log. It should show that md127 is using RAID level 6.
Message 12 of 12
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