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Forum Discussion
Readynas 104 - Slow transfer speeds
Dear all, I recently lost all my data to corruption of the array of my RN104. I've since then recreated an entirely new NAS based on NASware 4.0 TB drives in RAID5. I have also thoroughly sea...
Incidently, I have tried several things:
- use another cat5E cable and do all the permutations : CAT 6 + first cat 5E, 2 cat5E, second cat5E+ cat 6
Nothing goes above 36MB/s in write..
-I tried using the lowest firewalls settings on the ISP box : no improvement
- I tried using the exact same MTU on PC & NAS : 1500 (PC was at 1504 on LAN, and 1500 on WAN). No improvement.
=> I'm running out of ideas....
I think your numbers are not too bad. The RN104 is weak because of its cpu and ram. I have an RN104 and an RN204. While the 104 is doing 45 to 50 the 204 is doing 85 to 90 MB/sec (write speed) under exactly the same conditions infrastructurewise.
If you like you could go through a collection of hints how to improve statbility and performance of RN104 following this link:
NAS performance tester 1.7 http://www.808.dk/?nastester
Running warmup...
Running a 400MB file write on P: twice...
Iteration 1: 35,03 MB/sec
Iteration 2: 34,67 MB/sec
-----------------------------
Average (W): 34,85 MB/sec
-----------------------------
Running a 400MB file read on P: twice...
Iteration 1: 60,84 MB/sec
Iteration 2: 61,45 MB/sec
-----------------------------
Average (R): 61,15 MB/sec
-----------------------------I've just tried to do bonding on both adresses & to set it to adaptive load balancing. Changes nothing in terms of speed... I'm afraid the slow CPU is indeed the culprit... I am wondering if I should scrap it and try a RAID10 maybe? Would that give me much performance that the NAS can actually handle?
I havent started filling it, so there is still time.
I have decided to scratch the RAID5 array and try a RAID10, see if that gives me more performance.
Right now the array is rebuilding so I guess the slow CPU is struggling.
I get this:
NAS performance tester 1.7 http://www.808.dk/?nastester
Running warmup...
Running a 400MB file write on V: 5 times...
Iteration 1: 38,02 MB/sec
Iteration 2: 39,76 MB/sec
Iteration 3: 40,84 MB/sec
Iteration 4: 38,24 MB/sec
Iteration 5: 41,66 MB/sec
-----------------------------
Average (W): 39,71 MB/sec
-----------------------------
Running a 400MB file read on V: 5 times...
Iteration 1: 30,75 MB/sec
Iteration 2: 32,73 MB/sec
Iteration 3: 30,24 MB/sec
Iteration 4: 22,67 MB/sec
Iteration 5: 26,37 MB/sec
-----------------------------
Average (R): 28,55 MB/sec
-----------------------------Worse than the established RAID5, but I'll post again when the RAID10 is built, see if changes anything...
RAID0 would be optimal I guess, but I risk too much on RAID0 ...
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