NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
RN102 migrating to ReadyNAS Ultra 6
Hi, I am lookingto establish the optimal migration process from my RN102 (Arm based CPU), containing 2 x6TB drives currently set up as individual volumes under JBOD and holding roughly 6TB of data, to a RNDU6000 (Intel based CPU) containing 6x2TB drives currently set up under Raid 5 (drives currently empty )
A goal is to swap out two 2TB drives and replace them with the two 6TB drives from the RN102 as part of the process, to give greater overall capacity in the RNDU6000
I don't have any other interim backup desinations, so need to manage the entire data transfer process safely just using these drives and NAS devices.
I understand I can not simply swap the 6 TB drives between devices without losing the contents.
I understand from my reading that with X-Raid active, I can mix drive sizes using Raid 5 array and that this would minimse lost space compared with other raid options, while maintaining some redundancy, and that effectivily the largest disk gets sacrificed for this?
Would an optimal approach here be to:
1- Remove 2 x 2TB drives from RNDU6000 , recreate a smaller new raid 5 volume from 4x2TB disks - which should give mt 6TB storage space
2 - Rsync or otherwise transfer the data from RN102, pretty much filling up the RNDU6000
3- Pull the 2x6TB disks from RN102, and plug them into RNDU6000, destroying whatever is on them (assuming this doesnt happen automatically), and letting the Raid5 volume automatically rebuild itself to larger size usinng these (presumably result will be 4x2TB+1x6TB=14TB?)
Is this a plausible and optimally efficient approach? and is my data likely to survive it? Is there anything I am missing?
For example inder X-Raid do I need to introduce the 6TB drives one at a time to destination NAS, letting volume expand first before adding the next one?
Does the fact that I am adding larger disks to volume after the smaller ones are already set up (and pretty much full) create any problems for the data already present while volume size is reconfiguring itself?
Cheers
20 Replies
Replies have been turned off for this discussion
OK, I cant seem to erdit my own post, but I posted the wrong drive specs for the RN102 I am trying to migrate from
It currently contains 1 8 TB drive and on 4 TB drive - not 2 6TB drives as I had mentioned.
If Raid 5 will cost me the space on the the largest drive, 8TB is a big hit - wondering what strategy might now be optimal to maximise storage given this new info?
Ok. So you have 6x2TB in the Ultra now, and you want 4x2TB+4TB+8TB.
If you use XRAID in the Ultra, then you'd end up with a 12 TB RAID-5 volume (sum the disks and subtract the smallest), which actually does match the total space you have on the RN102 now. But it is wasting 4 TB of space (and is only 2 TB bigger than your current volume size). You can fix that by upgrading one of the remaining 2 TB drives to 8 TB - but when you do that you will run into one of the expansion limits of the 4.2.x firmware. You can overcome that by converting the Ultra to OS-6 now (while it is still empty).
Another option is to switch to flexraid on the Ultra, and create a 4x2TB RAID-5 volume (6 TB capacity). Then create 4 TB "D" RAID-0 volume and an 8 TB "E" RAID-0 volume. Then you'd have 18 TB of space across the 3 volumes, with one volume having RAID redundancy.
A third option is to leave the disk configurations as they are for now, and use the RN102 to back up the Ultra. That assumes that 10 TB is large enough to do what you want.
You should of course first check that your FTP problem is resolved by the Ultra. If it isn't, you could then convert it to OS-6 and retest.
Thanks Stephen. Very helpful as always!
The Ultra6 already has OS6.10.2 set up by previous owner.
Is X-Raid incompatible with manually denoting say one or two of the 6 disks in the Ultra6 chassis as separate JBOD volumes? Or am I stuck with using FlexRaid if I want to do that?
I was thinking maybe have 5x2Tb in raid 5, the 8TB as JBOD volume, and sticking the 4TB disk in my PC, giving me 16TB total in the NAS.
Over time, as and when I upgrade or replace one of the 2TB drives, say another 8Tb drive, that coud be my prompt to kill the 8TB JBOD volume and let it merge with X-Raid volume at same time?
Would be nice if X-Raid could handle the expansion of that volume automatically for me, rather than making me start again (which Flex Raid seems to need?)
Meanwhile I figure that whatever happens with the bottleneck FTP issue, I am probably better off comitting to migrating to the Ultra6 anyway as fundamentally better hardware?
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
