Hello, I am having a problem with host hbas logging into a CLARiiON array via IVR. The hbas are zoned to 2 sp ports (spa and spb). Usually only one SP port gets logged into successfully. This is very strange. Sometimes it works fine. Then I start trying to get the others working and the working one goes away.
Simple IVR topology. Site 1, 3 switch fabric (vsan 250) connected via GE FCiP to site 2, 1 switch fabric (vsan 100). Transit vsan is 1000. The IVR zoneset is consistant on all switches. All IVR zones are injected into the active running zones on the switches and show as active. All fcns entries are correct (so I think). Meaning sh fcns data vsan 100, 1000 and 250 all show the hbas N ports and storage ports logged in. No errors anywwhere. We have an extremely robust site to site connection (4G fcip per fabric A and B). 2ms ping times, RTT 270us consistantly (dark fiber). We are getting about 600MB/sec throughput with no errors.
I'm pretty much on my own. I have opened a case with the vendor... but they are not making any head way... sh tech-supports have been sent in etc etc.
Any idea what might casue an initiator to only log into one target? I have tried adding all the targets and hba in one zone... didn't help.
Re: IVR hosts having difficulty logging into CLARiiON
Hopefully this will help someone. I figured this problem out myself. Apparently this is a known issue leveraging FCiP WA (write-
acceleration). If an hba has multiple paths to a target, and multiple equal cost paths over FCiP tunnels WA can cause issues. I disabled WA and everything started working fine.
Our site to site configuration is across 4 GigE links per fabirc channeled together in 2 port channels, equal cost. We are migrating our ESX clusters to a new data center via SVmotion (esx storage vmotion) across these links. Not leveraging WA seems to of really slowed things down, but, at least the environment is stable.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
Introduction Prepositioning is a powerful tools on the WAAS platform but
it is not always easy to figure out why your jobs are failing when
trying to retrieve the files.Here is a method that should help you to
figure out the reason why they are not succes...