iSCSI strange behavior with random write (utorrent)

Question

Hello,I'm using RND6 Pro with E7300/4Gb/6*2Tb WD Black (x-raid/raid5 mode) and windows 8.1 x64 as client.all NICs are Gigabit. One NIC at client and one NIC at RND.Later I had FW 4.2.27 and one LUN (500Gb) connected to client as utorrent downloads target.I was able to download 2-3 torrents with ISO files (linux distro or MS distro) at the same time, before "disk overloaded 100%" at utorrent.&nbsp;Now I've updated to FW 6.3.5 (nothing else were changed!), created Thick LUN, conncted it to client and start utorrent.&nbsp;Even with one torrent file (two ISOs) I got "disk overloaded 100"&nbsp;Need any advice about this problem.&nbsp;P.S. Please don't advice to use smb/cifs - I need iSCSI disk.&nbsp;

mdgm-ntgr · Answer

Is the LUN thin/thick?Did you enable bit-rot protection?What about snapshots?What about sync writes?

WingDog · Answer

Hello, mdgm.&nbsp;LUN is Thick.no, bit-rot protection is off (default setting)no snapshot (disabled)&nbsp;sync write is allowed (default setting)

mdgm-ntgr · Answer

Can you disable sync writes and see what difference this makes?
&nbsp;
Do you recall which firmware you were running when you created the LUN?

WingDog · Answer

mdgmI think this is one causehttps://community.netgear.com/t5/ReadyNAS-in-Business/MPIO-slow-speed/td-p/964959/highlight/false/page/2&nbsp;with Disabled sync writes it's a very-very little faster.&nbsp;&nbsp;FW R4toR6_latest-beta.bin from your post at previous forum.&nbsp;

mdgm-ntgr · Answer

If your speed when not using MPIO is a lot faster then that would suggest the problem is with how you are using that.

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iSCSI strange behavior with random write (utorrent)

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