PowerVault MD3600f disk groups repeatedly losing preferred RAID controller module ownership?

Hey all -

We've been having an issue whereby some of our disk groups repeatedly "lose" the "preferred RAID controller module ownership" on our Dell PowerVault MD3600f, and then performance goes over the side and we're left with backups taking forever and our virtualization cluster absolutely locked in terms of performance - and I cannot, for the life of me, figure out what's causing this or why performance is so slow at all. We have 8 gigabit SFP+ transceivers and a switch that supports those speeds, yet we cannot get good performance or reliable connectivity.

We're getting something like 2.3 MB/sec in the performance monitor in the MDSM, and that is WELL below what we should be getting, even on a single-path connection.

What gives?

Responses(1)

DELL-Marco B

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3.5K Posts

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January 23rd, 2024 08:23

I'm sorry to hear about the issues you're facing with your Dell PowerVault MD3600f. Here's a concise action plan to troubleshoot the problem:

Update Firmware and Software: Ensure that both the PowerVault MD3600f firmware and the Management Software (MDSM) are up to date.

Check RAID Controller Settings: Review the RAID controller settings and logs for any errors or unusual activity.

Network Infrastructure: Verify the functionality of your SFP+ transceivers and switches, ensuring they are not contributing to the performance issue.

Inspect Disk Health: Examine the physical disks in the disk groups for any signs of failure or reduced performance.

Analyze Performance Data: Utilize the MDSM performance monitor to identify any specific patterns or anomalies in performance.

If these steps don't resolve the issue, please don't hesitate to reach out to Dell's dedicated support team for further assistance.

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