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Error Bringing Clariion X3-10 LUN ONLINE

Posted on 2012-04-03
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Last Modified: 2012-06-21
I just got a used Clariion and I have reconfigured it. I disocovered the issue i am having when i went to connect to my Windows 2008 Backup server using iSCSI. I have registered the host in the Navisphere software, Created the Raid Groups, Luns and Storage groups. Windows see's it but says "Disk Not Ready" when i go to initialize. It is a 6TB partition so i attempt to initialize it using GPT. From there I noticed my LUN was offline and when I try to bring it online it says "One or more of the selected LUNs can not be brought on line, contact your Service provider." Is this the reason why i can't initialize the LUN on my Windows server or is the issue something else? does anyone have EMC Clariion experience? Thanks All.
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Question by:jpeezus
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by:Duncan Meyers
ID: 37809178
Have you installed PowerPath? PowerPath hides the multiple FC paths into the array and presents a single disk to Windows. The symptoms you describe sounds like that's the problem.

You can download PowerPath from Powerlink (http://powerlink.emc.com)
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by:jpeezus
ID: 37809401
Hmmm no sir i haven't. I will try it now and let you know how it goess. Also I wanted to point  out that the error is within the Navisphere software itself when i right click the LUN and select BRING ONLINE. that is when i get the error.
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by:Duncan Meyers
ID: 37809513
PowerPath also handles persistent binding which is most likely the core problem...

> Navisphere software itself when i right click the LUN and select BRING ONLINE. that is when i get the error.
Can you post a screen shot please? That doesn't make sense.
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by:jpeezus
ID: 37809529
Here is a screen shot. Let me know if this helps. Thanks


BRING LUN ONLINE
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by:Duncan Meyers
ID: 37809588
Ah. That function is there to clear a dirty cache status on a LUN. It's a red herring in your case.

A LUN gets a dirty cache status if writes were outstanding for the LUN and the array and the array then suffered a catastrophic failure where it wasn't able to protect write cache with a clean shutdown. The usual cause for this is that someone's pulled the plug on the storage processors rather than following the correct procedure to shut down the CLARiiON (which is simply to turn off the Standby Power Supplies (mini UPSs) and let the array shut itself down cleanly) or if the storage processors suffered a panic condition.
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by:jpeezus
ID: 37809595
I think you are on to something. I got this from a friends network and it appeared they just shut it down. I uninitialized it and reinitialized it and then i deleted and reconfigured all the Raid, LUN and storage groups. Do i have to default the SAN and reconfigure it to bring it online or is there a process for this? Thanks for all your insight
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by:jpeezus
ID: 37809689
also one more thing to note. It doesn't say its offline but when i right click the LUN i get the option to BRING LUN ONLINE. I am new to deploying EMC so i am wondering if that is preventing me from initializing the iSCSI target. But i will with install Powerpath on the server also.
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by:jpeezus
ID: 37813100
I found the issue. The LUN wasn't actually offline and the The LUN i was trying to connect to was on a different SP than the Host so once I trespassed the LUN over to the same SP it work. Thanks for the help I appreciate you getting involved.
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by:jpeezus
ID: 37814554
I've requested that this question be closed as follows:

Accepted answer: 0 points for jpeezus's comment #37813100

for the following reason:

Because this is what actually fixed the issue.
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by:Duncan Meyers
ID: 37814555
You've not fixed your problem. If you only have a single fibre connection into the array, any trespass event means that your host will lose connection to the LUN. Of
You just have that one host with a dual fibre hba connect one FC cable to spa and
The othe FC cable to SPB. You will then need to install PowerPath. PowerPath (as discussed above) handle abstraction of the multiple paths and persistent binding. It also initiates LUN trrspass if is necessary.
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by:jpeezus
ID: 37816773
Meyersd

thank you for getting involved.  I dont have Powerpath nor did i need Powerpath and that is probably because i am using iSCSI and not fiber for this SATA array. You definitely appear knowledgeable and like i said previously i appreciate you getting involved but my issue appeared to be different. I have no reason to lie because i come to Experts - Exchange to get answers and could care less about points. Also for the FC array i am going to set that up in Cisco UCS so i still wont need Powerpath. See screen shots.  And with the level of knowledge you display i just hope i can find you when i have another EMC issue. Thanks a bunch. At some point i may want to go to Fiber on the Server because I do have HBA's i just have to go buy 2U plates so they fit in the server i connect to and i haven't had time. But it sounds like that is a different question all together because for this one i just needed to get it online to see if it worked and i accomplished. I've seen another one of your EMC posts and you definitely have the knowledge that people like me appreciate

iSCSI
 

No PowerPath in the programs menuSAN array is online
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by:jpeezus
ID: 37820355
I've requested that this question be closed as follows:

Accepted answer: 0 points for jpeezus's comment #37813100

for the following reason:

This is the resolution of the issue because the issue i had was simply being able to initialize the LUN on a Windows 2008 server. It is connected via iSCSI not Fibre and I have added Screen shots below.
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by:jpeezus
ID: 37819614
Meyersd

Do i need Powerpath to manage the iSCSI connection because if so then i do think you deserve points for adding that. Thanks for your expertise
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Duncan Meyers earned 500 total points
ID: 37820356
>Do i need Powerpath to manage the iSCSI connection because if so then i do think you deserve points for adding that. Thanks for your expertise
Yes - you do. But right now, I don't think you've got the iSCSI connections on the array set up correctly as you had to trespass the LUN to make it available to Windows. If you had the array and the iSCSI connections set up correctly and PowerPath installed, then you wouldn't have had the problem. The issue is also that you are now exposed to an array trespass/failover event where you will lose access to your data should the LUN trespass. It's easy to fix - but you do need to fix it.

You should have the following:
 - iSCSI and IP addresses configured on Port 0 and Port 1 on SPA and SPB.
 - You should have an iSCSI connection configured for each port on the host
 - You should install PowerPath to manage the multiple instances of each LUN that will become visible on the host. PowerPath also handles multipathing and failover.
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by:Duncan Meyers
ID: 37820364
You can also use Microsoft MPIO or Symantec Storage Foundations Basic. Storage Foundations Basic is free for smaller configurations, so it's probably the best way to go: http://www.symantec.com/storage-foundation-basic
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by:jpeezus
ID: 37820434
Meyersd

I see now and again i appreciate your expertise. I only have My iSCSI ports plugged in on Ports 0 of both SPA and SPB so i will configure Ports 1 on both as well. I will go ahead and install Powerpath or Microsoft MPIO. Another Interesting piece of info that i didn't add is that my power supply failed before i set it up and if i understand correctly that is why i had to trespass my LUN to the SP using the good SPS. Also keep in mind we got this used so there is no data on yet thank God. I am ordering a new power supply. We are looking for after market Clariion support as well so if you work for a company that supports EMC Clariion i would love to speak further off line. I have never deployed an EMC from the ground up so your expertise has been much appreciated and needed. Thanks for the help.
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by:Duncan Meyers
ID: 37820767
>We are looking for after market Clariion support as well
I'm in Australia - usually that's a problem if you're in North America or Europe...  :-)
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Author Comment

by:jpeezus
ID: 37821528
Meyersd

Aw man too bad. I have opened a different EMC question that maybe you have an answer for. Thanks for the expertise

http://www.experts-exchange.com/Hardware/Servers/Q_27666782.html#a37821522
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