Guest SteveR Posted April 17, 2008 Posted April 17, 2008 I have an Equallogic iSCSI SAN attached to a HP DL360 G5 Server via MS iSCSI initiator 2.06 and a Foundry FLS624 switch dedicated to the iSCSI traffic. When I copy data to/from the iSCSI attached SAN to the local C:\ drive on the server it performs very well. When I share the iSCSI attached SAN then do the same read/write test from a XP workstation on a GB network, I get great performance when writing to the share however when reading from the server is really slow. Looking at the network performance under task manager, I see 54% when writing and only 20% when reading. Test Server = HP DL360 G5 Test workstation is a Dell Precision 390 attached to the same Foundry FLS 624 switch. Tested NIC Cards NC373i NC380t NC360T Intel server 1000pro pt quad port. Tested Windows Server 2003 SP1 SP2 R2 and Server 2008 iSCSI Initiator 2.4 - 2.6 My test is a single 2gb file. All windows Scalable Networking is disabled via the recently released Windows Update as well as all of the related NIC settings. Netsh int ip set chimney DISABLED HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters EnableRSS == 0 EnableTCPA == 0 Enabletcpchimney == 0 I have escalated this issue to engineering in HP support. They are able to duplicate the problem easily however they are sure that the problem resides in Windows Server 2003. When we install Server 2008 trial the problem goes away which eliminates the hardware. I’m hoping that since the problem is so easy to duplicate that others have seen it and there is a fix out there somewhere. Thanks Steve
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