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Readynas Duo v1 Slow Write speeds
Hi All
Hoping someone with more knowledge than i could help with my slow write speed i am getting on my ReadyNas duo v1. if setup as a raid 1i get about 5MB/s if setup as raid 0 i get 7MB/s. either of these setups are vastly slower than my read speed of around 50MB/s
My setup
Imac 27inch with mavericks > connected to Netgear R6300 > Connected to Readynas duo. all using Cat 6 ethernet.
MTU 1500 throughout (no jumbo frames)
Gigibit network
using standard file protocol AFP (however i have tried all the others)
Any help would be appreciated
Thanks
9 Replies
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Hello walkz187,
It may be best to test your connection speed when you connect the NAS straight to the computer and have RAIDar detect your NAS so you will know what IP address you can set on the computer's network settings. For example, when RAIDar detects the NAS with IP address 192.168.168.168, this means that you can set a manual IP address of any number between 192.168.168.0 and 192.168.168.255 except for 192.168.168.168, you may use 192.168.168.5 as one available. Once you have set a manual IP address, you should be able to access your ReadyNAS FrontView and its shares. Test the connection speed.
I also suggest to have firmware version of the NAS updated.
Welcome to the community!
Regards,
Thanks JennC for your reply.
I tried connecting directly as you suggested and received the same slow writing speed, 7MB/s. Since i placed this help request up i have purchased a second hand readynas RND4000v3. i have tried the same drives in this other NAS and sames speeds as well. I then took out the drives and did a speed test directly from my Mac via a USB 2 adapter and received around 38MB/s write and 44MB/s read on both of my 2 TB drives. so unlikleky a drive issue. so the only conclusion i can come up with is both readyNAS systems are the kinks in the chain, OSX is via the readynas or my settings.
FYI i also tried my Mac book air via WIFI > R6300 roucter > readynas. speeds are also asymetrical around 4.5MB/s write and 20MB/s read. i also have tried different optons on Imac ethernet. no firewall.
its also worth noting error logs on the Ethernet, this was reset and took about 1 hours to accumulate:
Auto Negotiations 3
Bad packets 0
Disconnect 0
False Carrier 3
Idle Errors 510
Link Failures 0
Received Errors 21451
Symbol Errors 1
VLAN tags 0
TCP Retransmits 20
Unrecovered TCP Retransmits 17
20K Received errors over an hour looks pretty high to me.
Did you try a different ethernet cable?
- Thanks for you reply StephenB
Yes I have tried multiple cables - and speeds were the same.
For clarification it may of been between 1-2 hours. But no longer. all direct IMac connected readynas.
Are these readynas designed to get anymore speed than 7MB/s writing. Feel like I have tried everything, every setting combinationThe more serious errors you are showing are layer-1/layer-2 (physical/ethernet)..
If you are seeing the receive errors in all your testing (with multiple devices and cables), then the ethernet port on your duo is failing.
Unfortunately that can't be repaired.
- I don't think this would be it. Because I just got another second hand readynas rnd4000 and the same issue is occurring. Maybe I'll go buy a brand new high end cable and see.
If you have a windows PC, I'd also suggest testing the NAS with NasTester( http://www.808.dk/?code-csharp-nas-performance )
Overall, you should be seeing write speeds in the 18-25 megabyte range for large file transfers. At least that what I've always seen on my duo and NV+.
If you are looking for a serious performance boost, the best option is to upgrade to a modern OS-6 NAS. An RN21x or better is limited by your gigabit ethernet speed (100+ megabytes per second for large file transfers).
- I would be more than happy with 18MB. Have no need for anymore. I got rid of my PCs last year and work Laptop is well locked up with the need for admin privileges to do anything. Do you think it could be an OSX issue? Do you know what speeds Mac normally get when connected to a readynas. Maybe 7MB is ok. I got 8.5mb when I changed it to jumbo packets.
Might need to try run windows via virtual machine to do you test.Kind of hard to say what it is when you only have one test device. The receive errors are happening on the ethernet layer, but it's not easy to tell what impact those are having on speed.
I think there is a setting in frontview related to OSX optimization, but I'm not sure what it does and if it helps with current OSX.
What firmware are you running?
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