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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 facto...
Hi all and Justin,
I have read this thread with interest - alongside my own topic "Woefully Slow ReadyNAS" to be found here: viewtopic.php?f=21&t=57241&p=325768&hilit=woefully+slow#p325768
During my investigation, I came across an (old) article which I thought might be of interest to those looking at network/ReadyNAS performance. It can be found here: http://www.tomshardware.co.uk/gigabit-e ... 31611.html
This article suggests creating RAM disks to overcome the drive-speed limitations in the puzzle - an excellent idea and one which yielded some interesting results for me. In all my tests, including direct connections, the maximum WRITE speed I had obtained to or from the ReadyNAS NV+ was 19MBs - despite everything hooked up correctly in a Gigabit network. READ speed from ReadyNAS to iMac is a more pleasurable 34MBs. I created a RAM disk on my iMac and repeated some tests using a 3.17GB file over afp. A transfer from my RAM Disk to the ReadyNAS again gave only 19MBs. However, a transfer in the other direction (from ReadyNAS to RAM disk) gave 40MBs.
I can't do a test transfer between two PC clients on my network as my Windows client only has a 10/100 NIC - I don't have two PCs with GB NICS sadly. However this did enable to find one problem - my Netgear GS605v2 Gigabit switch - which was limiting throughput for ALL connected devices to the speed of the lowest connected which was my 10/100 PC. This switch is now in the bin - replaced by a Belkin which does not cause this problem. So if you have one of these switches - beware.
There's lots of detail in my topic - though I suggest future responses to this problem use this topic as it has more detail than mine! However, it's worth noting that I reverted back to 4.1.7 and did not get a speed increase. There is no difference whether Bonjour is enabled or not. The other thing of note is that I'm using 4 new 2TB Seagate 5400rpm green drives in the readyNAS so would expect slightly slower read and write speeds that with higher rpm drives.
I guess for me, the war is over at 19MBs transfers to the ReadyNAS.
Newt
I have read this thread with interest - alongside my own topic "Woefully Slow ReadyNAS" to be found here: viewtopic.php?f=21&t=57241&p=325768&hilit=woefully+slow#p325768
During my investigation, I came across an (old) article which I thought might be of interest to those looking at network/ReadyNAS performance. It can be found here: http://www.tomshardware.co.uk/gigabit-e ... 31611.html
This article suggests creating RAM disks to overcome the drive-speed limitations in the puzzle - an excellent idea and one which yielded some interesting results for me. In all my tests, including direct connections, the maximum WRITE speed I had obtained to or from the ReadyNAS NV+ was 19MBs - despite everything hooked up correctly in a Gigabit network. READ speed from ReadyNAS to iMac is a more pleasurable 34MBs. I created a RAM disk on my iMac and repeated some tests using a 3.17GB file over afp. A transfer from my RAM Disk to the ReadyNAS again gave only 19MBs. However, a transfer in the other direction (from ReadyNAS to RAM disk) gave 40MBs.
I can't do a test transfer between two PC clients on my network as my Windows client only has a 10/100 NIC - I don't have two PCs with GB NICS sadly. However this did enable to find one problem - my Netgear GS605v2 Gigabit switch - which was limiting throughput for ALL connected devices to the speed of the lowest connected which was my 10/100 PC. This switch is now in the bin - replaced by a Belkin which does not cause this problem. So if you have one of these switches - beware.
There's lots of detail in my topic - though I suggest future responses to this problem use this topic as it has more detail than mine! However, it's worth noting that I reverted back to 4.1.7 and did not get a speed increase. There is no difference whether Bonjour is enabled or not. The other thing of note is that I'm using 4 new 2TB Seagate 5400rpm green drives in the readyNAS so would expect slightly slower read and write speeds that with higher rpm drives.
I guess for me, the war is over at 19MBs transfers to the ReadyNAS.
Newt
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