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Forum Discussion
Network connection issues with ReadyNAS RR4360X
My company purchased a ReadyNAS RR4360X a while back and we just put it into production recently in the hopes of eventually replacing a smaller capacity ReadyNAS 4312. The RR4360X is similar to the 4...
emedeiros wrote:
The drops are also evident when I try to manually copy large files from a Windows server to the RR4360X - the transfer speed is around 200 MB/s then suddently drops to 0 bytes/s for 10 or 15 seconds before going back up again - I even notice the ReadyNAS web interface page reload at times (pages changes to "Connecting to the ReadyNAS Admin Page...").
Do you see this when you copy large files from the RR4360x to the Windows server? Or only when the NAS is the destination?
What form of link aggregation are you using? Is the MTU set to the default 1500?
Have you downloaded the full log zip file, and looked for errors in there (from around the time you do the transfer test)? system.log and kernel.log are good places to look for disk or file system errors that might be related to the pauses in the transfer speed.
If you enable ssh, you could also look at the network stats before and after (ifconfig will give you dropped packets, overruns, etc). It's also pretty easy to install iperf, and use that to test the network connection separately from the RAID performance.
What disks are you using?
Have you enabled antivirus or file system indexing?
I'm not surprised the XRAID button is absent. XRAID can't handle multiple volumes in the same chassis, and a 60-drive single volume would be a really bad idea (if Netgear even wanted to program in all the expansion possibilities). So I don't think that's anything related to your issue.
Sandshark wrote:I'm not surprised the XRAID button is absent. XRAID can't handle multiple volumes in the same chassis, and a 60-drive single volume would be a really bad idea (if Netgear even wanted to program in all the expansion possibilities). So I don't think that's anything related to your issue.
Thanks for the feedback. I just found it odd that the button is completely missing because in the context help for RAID, it still mentions X-RAID. And it's referenced in the Volume settings too (see ReadyTIER screenshot attached). We have another ReadyNAS configured with a single RAID 10 volume so since X-RAID isn't possible, the button is there but grayed out although to your point, that NAS only has 12 drive bays. I would think it would be the same for this NAS even with the extra bays since you don't have to use all of them.
You mentioned that a 60-drive single volume would be a really bad idea. Right now, we have 24 12TB drives in a single volume. What are best practices for number of drives per volume with ReadyNAS? I believe my manager wanted to add additional drives to this same volume eventually.
Frankly, I wouldn't have gone over 12 drives in a single volume. The reason is that if the 4360 fails, you could put each of the 12-drive volumes in a 12-bay NAS. The XRAID button is there on a 12-bay NAS, and the logic is there for that. After 6 bays are full, it automatially switches to RAID6. But it will never switch to anything more than that, and I'd think you'd want more redundancy for a significantly larger number of drives in a volume. Then, of course, there is also rebuild time in the event of a drive failure.
Is there a reason you can't start a new volume and transfer some use there?
I'm not expert, but I think going much larger is potentially a bad idea more because BTRFS errors have been known to make an entire volume inaccessible than the potential problems with the RAID, which I'd think you'd want to be RAID60.
Is there a reason you can't start a new volume and transfer some use there?
No, we just hadn't thought that the size or number of disks in the single volume could be part of the problem. I created a new volume 7 hours ago consisting of (4) 12TB ST12000NM0007 disks, RAID 5. It's still "resyncing" and says it has 40 hour remaining before it's complete. Once the resyncing process is complete I'll do more testing. Thanks for the suggestion!
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