Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Fibre Channel disk

Posted on 2011-03-14
7
Medium Priority
?
2,471 Views
Last Modified: 2012-05-11
I have a Server 2008 box that has a secondary drive that is a Fibre channel share from a SAN. I have been having issue on it where the disk disappears from the box. A reboot will correct the issue, but I am trying to figure out why it is happening. I have not worked with Fibre Channel before.

basically I see that there are 2 fibre channel adapters in the server and that the MS MPIO service is used for mounting the drive.

What should be the next step in troubleshooting this?
0
Comment
Question by:ryan80
  • 3
  • 2
  • 2
7 Comments
 
LVL 2

Expert Comment

by:amwinsit
ID: 35130203
What type of Array is this server connected to? Is it fabric attached or fabric switched?
0
 
LVL 12

Author Comment

by:ryan80
ID: 35131118
The server is attached to a brocade switch and then to the SAN. Let me know if this answers your question. I have never worked with Fibre Channel before, although I have worked with IP storage before.

I looked through the event logs and found that I am getting alerts that

Event ID:7
source:ds4dsm
0:0 path failed

Then

Event ID:774
source:ds4dsm
device path information for 0:0:1 has been removed per MPIO notification

Event ID: 18
source: MPIO
A single path fail-over is being attempted on \device\mpiodisk0
0
 
LVL 56

Expert Comment

by:andyalder
ID: 35131714
So path failover is initiated presumably due to a failed cable or something like that and the other path doesn't get picked up? I'd get the latest DSM from IBM if you haven't already got it (I assume it's a DS3xxx), it's installed when you install IBM DS storage manager.

Presumably it's connected to two Brocade switches, not one; would be a bit silly having redundant HBAs, redundant controller in the DS but only one switch.
0
Veeam Task Manager for Hyper-V

Task Manager for Hyper-V provides critical information that allows you to monitor Hyper-V performance by displaying real-time views of CPU and memory at the individual VM-level, so you can quickly identify which VMs are using host resources.

 
LVL 2

Accepted Solution

by:
amwinsit earned 1000 total points
ID: 35132466
I agree with andyalder about the cause but even if you have redundant HBAs switches and Controllers you may still have an issue with multipathing Did you check your config in the mpio control panel.

Check out http://technet.microsoft.com/en-us/library/ee619752(WS.10).aspx
0
 
LVL 12

Author Comment

by:ryan80
ID: 35139526
I will check on the cables and look at the switch. Once I have some more information on it I will respond back. Probably later today or tomorrow.
0
 
LVL 56

Assisted Solution

by:andyalder
andyalder earned 1000 total points
ID: 35139726
You might also want to fix the speed on both the switch, HBAs and storage, it should auto-negotiate but just like Ethernet it's more stable if fixed.
0
 
LVL 12

Author Closing Comment

by:ryan80
ID: 35206604
Thanks,

Turns out that there was an old version of the HBA drivers that was causing the issues. After updating the drivers we have not had any issues.

Thanks for the help and education.
0

Featured Post

NEW Veeam Backup for Microsoft Office 365 1.5

With Office 365, it’s your data and your responsibility to protect it. NEW Veeam Backup for Microsoft Office 365 eliminates the risk of losing access to your Office 365 data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I was prompted to write this article after the recent World-Wide Ransomware outbreak. For years now, System Administrators around the world have used the excuse of "Waiting a Bit" before applying Security Patch Updates. This type of reasoning to me …
This article provides a convenient collection of links to Microsoft provided Security Patches for operating systems that have reached their End of Life support cycle. Included operating systems covered by this article are Windows XP,  Windows Server…
This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten. The USB drive must be s…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

885 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question