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'**Bug** IPS device driver causes network slowdown
I have struggled a while with low throughput from my WHS system. The system consists of two WDC 1TB green drives. The network is cabled gigabit and gigabit switch/router. Using Ixia, I found that the throughput is 888,890Mbps. According to Ixia, Ixia's IxChariot can create throughput at up to 940 Mbps on a Gb Ethernet LAN. It seems that the network should be fast enough.
Nevertheless, I have noticed that file copy from my WHS is slow. I work with big photo files (Nikons NEF raw format, more than 10MB files), and browsing folder s with over 1000 of them could be slow. Copying a 683MB zip file takes approximately 20 seconds.
Then I faced some problem with my NIS 2009 security suite, and needed to uninstall/reinstall the NIS2010 version. After uninstalling/reboot, I needed another zip file from my WHS system. Surprisingly, the copying speed was very fast. I repeated the copying and clocked it to approximately 12 seconds!
I now realized that NIS slowed down the transfer with a large amount. I then set up a test consisting off:
A ISO file, size 281MB
A ZIP file, size 683MB
A folder, 698MB (Consist 66 NEF files)
Then I start clocking the transfer speeds, performing the same copying two times.
iso test 1 2,6
iso test 2 3,5
zip test 1 12,9 (over 109 MB/s troughput)
zip test 2 11,9
Folder test 1 15
Folder test 2 11,5
With NIS 2010:
Iso test 1 9,4 sec
Iso test 2 6,5
Zip test 1 25 seconds
Zip test 2 24 seconds
Folder test 1 40 seconds
Folder test 2 40 seconds
This is very annoying. Upgrading from 2009 to 2010 was done using the Norton removal tool. And I have put my WHS in the trusted zone in the NIS2010 network setting. Have anyone any clue?
Norton: please lock into this. For my use, NIS is not as I want. I love Norton/Symantec’s security packages and have used them for 10 years for my 5+ computers. I have also tested some others vendor’s product and they are a lot faster transferring data from my WHS.
Thanks and reagrds,
[edit: Changed subject for clarity.]Message Edited by shannons on 09-20-2009 03:40 PM