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Forum Discussion
RN3220 / RN4200 Crippling iSCSI Write Performance
I've got a mixed OEM ecosystem with several Tier 2 RN3220's and RN4200's along with Tier 1 EqualLogic storage appliances. All ReadyNAS appliances have 12 drive compliments Seagate Enterprise 4TB ...
I've now tried playing with the NIC buffers in /etc/sysctl.conf. They are only 206KB by default. I've tried between that and 12MB and while there was a slight improvment in read numbers around the 2MB mark, nothing at all happened with the write speeds. The array is still RAID0.
I've also tried as per waldbauer_com's post in
The Windows 7 VM is so sluggish, if you try and do too much at once, it blue screens out.
Finally, if I take LUN out of the CSV and re-mount it (on the same iSCSI connection) as local storage on the hypervisor, this is what happens to the ATTO stats and quite a lot of the sluggishness from running on a single 1GbE vanishes too.
So perhaps the issue is actually in NetGear compatibility with CSV?
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