[geeks] A friend has a NetApp iSCSI issue

[Bill Bradford]

----- Forwarded message from Pete Wargo <pwargo at thogscave.org> -----
Subject: NetApp info.

Here's the skinny.  There's also an NFS wrinkle at the end.  
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The situation:

NetApp FAS 3140, two heads, cluster mode, Data ONTAP 8.01

Client: OS X 10.6 Snow Leopard running the latest GlobalSAN iSCSI initiator.

I can create iSCSI LUNs with no problem, and by setting security universally to a CHAP user/pass, I can actually mount volumes on the Mac.  However, from what I can tell, all the luns are only available from one target address.  On our other systems (AberSAN, Open Filer) we connect to the system hosting the targets as a portal and then pick and choose targets.  On the NetApp, I have to specify the target name, then it just connects to *all* the LUNs on whatever toaster/target I'm connected to.

This seems somewhat ass-backward to me.

Is this the case?  All LUNs are under one IQN, and that's that?  Or is there a way to specify LUNs individually?

Now, a twist.  On the same OS X client, I'm testing NFS.  Same toaster, same aggr, same volume, different qtree.  NFS performance is considerably less than iSCSI.  Reads are really bad, 140-150MB/sec on NFS .vs. 250-260MB/sec on iSCSI.  Writes are closer, say 140-150 .vs. 190-200.

So, if anyone has thoughts, please hit me up at pwargo at thogscave.org -- I'll figure out a reward.  :-)

-Pete
----- End forwarded message -----

-- 
Bill Bradford 
Houston, Texas