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Performance halved at a stroke (ReadyNAS Duo, 4.1.8) ...
In a busy few weeks, my little ReadyNAS Duo's performance seems to have halved at a stroke. The problem seems to be a consequence of upgrading to RAIDiator 4.1.8 (release) and performing a full factory reset but ... just in case ... here's a full rundown of its recent life ...
* After swapping my ageing PC for a shiny new iMac (really shiny, by the way), I noticed a very modest (but welcome) *increase* in performance from the ReadyNAS.
* Running Windows 7 (directly through Boot Camp, fully Windows Update'd) and RAIDiator 4.1.8 beta (for Lion compatibility) the little Duo could saturate my Gigabit Ethernet to 25-30% (transferring data at around 250-300Mb/s, then). Everything was running great ...
* Then a mini-disaster ... after three years use the ReadyNAS power supply gave up. The unit shut down without warning and wouldn't power up again.
* Some excellent online support put me back on track. "Some time later" and with a new power supply connected (an identical Netgear part) I was up and running again.
* The unit started first time and all was well ... everything was accessible and usable ... but restarting the unit once more (from front-view) the ReadyNAS unexpectedly froze on boot.
* Blue light flashing at 1Hz, fan at medium-volume, no activity or drive lights and invisible to RAIDar, I gave it four/five hours ...
* Not responding to physical (power) button presses, I had to pull the plug. Fortunately, the unit picked itself up and booted without issue. Scouring downloaded log's I could see *no trace whatsoever* of the failed boot.
* To eliminate any possibility of data corruption or similar badness (and with a new release-version of RAIDiator 4.1.8 now available) I updated the unit firmware, performed full factory reset and reconfigured the unit to match its old settings (all from front-view). Perhaps this was a beta glitch?
* Now running solidly and without issue, I copied data back to the unit using Windows Explorer and a local backup. It should have close to zero fragmentation, then.
Doing this, it was clear performance had halved. The unit now saturates just 10-15% of the network ... transferring at around 100-150Mb/s only (no RAIDar or front-view pages open).
This doesn't look like a hardware problem ... the drives look fine (a matched Seagate ST3500630AS pair, their SMART reports look good and their temps are normal), the network looks fine (private LAN, both Mac (on-board Broadcom NetXtreme) and NAS are wired to the same Netgear WNDR3700 (gigabit router, latest firmware), no concerning errors ... a few TCP retransmits which are not unusual) and there are no errors or warnings in the logs. But for a new power adapter, nothing has changed hardware-wise.
The old and new front-view settings match near-exactly (same network settings, same shares, same users and access rights, one or two *fewer* services running than before, no bittorrent/photo's/remote/vault, full data journaling, oplocks enabled, fast CIFS writes enabled, jumbo frames disabled), the unit isn't resynching or indexing media, there are no scheduled backup jobs (internal or time machine) and ... to be absolutely sure ... I've also confirmed performance several times over the last week to eliminate any other invisible, transient activity ... no luck :?
Performance seems to have halved at a stroke with no clear reason.
It looks very much like a RAIDiator 4.1.8 issue but I'm happy to help troubleshoot. Any chance a Jedi (or other expert) can help?
Thanks,
Justin
* After swapping my ageing PC for a shiny new iMac (really shiny, by the way), I noticed a very modest (but welcome) *increase* in performance from the ReadyNAS.
* Running Windows 7 (directly through Boot Camp, fully Windows Update'd) and RAIDiator 4.1.8 beta (for Lion compatibility) the little Duo could saturate my Gigabit Ethernet to 25-30% (transferring data at around 250-300Mb/s, then). Everything was running great ...
* Then a mini-disaster ... after three years use the ReadyNAS power supply gave up. The unit shut down without warning and wouldn't power up again.
* Some excellent online support put me back on track. "Some time later" and with a new power supply connected (an identical Netgear part) I was up and running again.
* The unit started first time and all was well ... everything was accessible and usable ... but restarting the unit once more (from front-view) the ReadyNAS unexpectedly froze on boot.
* Blue light flashing at 1Hz, fan at medium-volume, no activity or drive lights and invisible to RAIDar, I gave it four/five hours ...
* Not responding to physical (power) button presses, I had to pull the plug. Fortunately, the unit picked itself up and booted without issue. Scouring downloaded log's I could see *no trace whatsoever* of the failed boot.
* To eliminate any possibility of data corruption or similar badness (and with a new release-version of RAIDiator 4.1.8 now available) I updated the unit firmware, performed full factory reset and reconfigured the unit to match its old settings (all from front-view). Perhaps this was a beta glitch?
* Now running solidly and without issue, I copied data back to the unit using Windows Explorer and a local backup. It should have close to zero fragmentation, then.
Doing this, it was clear performance had halved. The unit now saturates just 10-15% of the network ... transferring at around 100-150Mb/s only (no RAIDar or front-view pages open).
This doesn't look like a hardware problem ... the drives look fine (a matched Seagate ST3500630AS pair, their SMART reports look good and their temps are normal), the network looks fine (private LAN, both Mac (on-board Broadcom NetXtreme) and NAS are wired to the same Netgear WNDR3700 (gigabit router, latest firmware), no concerning errors ... a few TCP retransmits which are not unusual) and there are no errors or warnings in the logs. But for a new power adapter, nothing has changed hardware-wise.
The old and new front-view settings match near-exactly (same network settings, same shares, same users and access rights, one or two *fewer* services running than before, no bittorrent/photo's/remote/vault, full data journaling, oplocks enabled, fast CIFS writes enabled, jumbo frames disabled), the unit isn't resynching or indexing media, there are no scheduled backup jobs (internal or time machine) and ... to be absolutely sure ... I've also confirmed performance several times over the last week to eliminate any other invisible, transient activity ... no luck :?
Performance seems to have halved at a stroke with no clear reason.
It looks very much like a RAIDiator 4.1.8 issue but I'm happy to help troubleshoot. Any chance a Jedi (or other expert) can help?
Thanks,
Justin
87 Replies
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milamber3 wrote: I was able to restore normal read/write speeds by reflashing 4.1.7, but I had to do a factory reset. A downgrade didn't work for me.
Yeah same here. . .I got performance back going back to 4.1.7, but after bouncing between all those FWs during testing I started noticing some weird behaviors like smart data not coming up, apache dieing and not coming back up, weird file locking issues, etc. . . , so I copied off all the data reflashed to 4.1.7 again and factory reset. I'm hoping that gets rid of any ghosts in the machine from all the FW bouncing I did.- I was able to reproduce the issue. Will have our engineers take a look into the issue.
- Just my 2 cents. I also did a downgrade to 4.1.7 and kept track of the performance of SMB.
4.1.8.
4.1.7
One of those cases that I would have been nice to been informed by Netgear of a possible speed drop. - I wonder if this issue is affecting USB communications also--in another thread here I am trying to backup 417GB of data from my 4TB NV+ to a USB drive, and after 72 hours it's still not even close to being complete.
The way I typically use my ReadyNAS, which is to back-up a PC by schedule nightly, I might never notice a speed decrease, though as I type this it occurs to me that I should be able to see in my logs whether these are taking significantly longer since 4.1.7. I will check... Chewbacca wrote: I was able to reproduce the issue. Will have our engineers take a look into the issue.
Good to hear. Thanks for the update.- From my thread about the same thing, but on NV+. BUT i had bad rates before to!
NV+ 4.1.8
NAS performance tester 1.3 http://www.808.dk/?nastester
Running warmup...
Running a 400MB file write on drive Z: 5 times...
Iteration 1: 14,2 MB/sec
Iteration 2: 15,8 MB/sec
Iteration 3: 15,68 MB/sec
Iteration 4: 15,67 MB/sec
Iteration 5: 15,31 MB/sec
------------------------------
Average (W): 15,33 MB/sec
------------------------------
Running a 400MB file read on drive Z: 5 times...
Iteration 1: 4,66 MB/sec
Iteration 2: 4,23 MB/sec
Iteration 3: 4,65 MB/sec - Hi New to this forum
I had my readynas a year ago with 4.1.7 work absolutly fine so why on eath did I updated it to 4.1.8 . It slow, frontview is worse and my transmission 2.11 doesn't work any more ( I had to update it to 2.34b4 which doesn't work properly). I have a Gb connection and use mainly 7 64bits to access it. I have also notice a decrease in performance ( I wonder if adding some Ram would potentially cure it)especially on write speed.
I am really thinking of downgrading to 4.1.7 and transmission 2.11. Do I need to backup all my data before downgrading or will the content of the disc will remain intact ?
Cheers
humberty humberty wrote: Hi New to this forum
I had my readynas a year ago with 4.1.7 work absolutly fine so why on eath did I updated it to 4.1.8 . It slow, frontview is worse and my transmission 2.11 doesn't work any more ( I had to update it to 2.34b4 which doesn't work properly). I have a Gb connection and use mainly 7 64bits to access it. I have also notice a decrease in performance ( I wonder if adding some Ram would potentially cure it)especially on write speed.
I am really thinking of downgrading to 4.1.7 and transmission 2.11. Do I need to backup all my data before downgrading or will the content of the disc will remain intact ?
Cheers
humberty
Hi Humberty,
You might have seen in this very thread I did this downgrade a few weeks back without issue. It's always a good idea to have a recent backup of your data ... especially when changing firmware ... but (barring unexpected problems) downgrading to 4.1.7 from 4.1.8 will leave all your data intact.
Thanks,
Justin- Having the same problems. Bought this readyNAs Duo last week and immediately upgraded to 4.1.8. Didn't know the correct speeds at first but just thought that they didn't seem right.
Connected directly to the NAS with no switch in the middle I was getting rates around 11MB down and 11MB down.
I downgraded to 4.1.7 and no get rates of 11MB down and 20MB up.
Did a factory reset by holding the reset button then turning on and holding power....
I still get 11MB up and 20MB down.
How are some people getting 45MB??? I want that!
Is it possible the hardware has changed?
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