December 18th, 2009
4:16 pm
IOCell NDAS Netdisk – fix for very slow performance

Posted under Windows
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I had a NetDisk attached via an HP Procurve gigabit switch, connected at 1000BaseT, but transferring at intermittent slow speeds, sometimes as slow as 1MB/sec. This was on a Core I7 920 with 12GB ram running Windows 7 64 bit (!)

This note from IOCell’s FAQ #6 fixed the problem :-

My computer is moving very slowly when my NetDISK is enabled, and the ACT light
…. on my NetDISK is solid yellow. What is going on?

This is a result of a bad connection between the computer and the NDAS device. Please make sure that you are using only network switches and routers, and that you are not using any network hubs. Also, if you have any software firewalls installed on your computer (i.e. Norton Internet Security, McAfee Personal Firewall, etc.), make sure to add ndasmgmt.exe and ndassvc.exe into their list of programs to Allow with full access. You can also try disabling your Antivirus software to see if that makes a difference. Please also try power cycling your NetDISK and switch as well.
 

The problem was the Windows Firewall – adding ndasmgmt.exe and ndassvc.exe to the list of allowed programs, both for private and for public, fixed the problem. Note that Antivirus can be a problem but it was not for me – I use Kaspersky and it was fine and needed no adjustment.

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