VNX: Storage Processor unexpected reboot during LCC replacement (User-Correctable)
Summary: When replacing the LCC on the first enclosure in SPE VNX models, an SP panic may occur. The SP should be shutdown first.
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Symptoms
LCC or LCC cable reseat/replaced between the SP and bus 0-0 LCC
In VNX models with a Storage Processor Enclosures (SPE) architecture, replacing a Link Control Card (LCC) on the first Disk Array Enclosure (Bus0 Enclosure 0) results in the Storage Processor connected to that LCC to reboot or panic and reboot.
This can lead to both SP's rebooting at the same time and cause DU.
In VNX models with a Storage Processor Enclosures (SPE) architecture, replacing a Link Control Card (LCC) on the first Disk Array Enclosure (Bus0 Enclosure 0) results in the Storage Processor connected to that LCC to reboot or panic and reboot.
This can lead to both SP's rebooting at the same time and cause DU.
Cause
- In SPE VNX models, the system drives are located in the first 4 slots on the first connected DAE.
- Reseating or replacing either the LCC on the DAE or the SAS cable connecting the SP and the DAE will result in a disruption of the connection between the SP and its system drives, resulting in the reboot.
Resolution
Schedule a time that the customer will allow a single SP reboot.
Shutdown the SP first.
Remove the LCC, keeping it out for 60 seconds before inserting.
Before any activity regarding the SP and LCC 0-0 work being done, make sure the proper precautions are taken so that the SP reboot will not affect accessibility;
Should this process need to be done on both LCCs, then repeat the process on the peer SP after the first SP is back online and waiting for 10 minutes
Shutdown the SP first.
Remove the LCC, keeping it out for 60 seconds before inserting.
Before any activity regarding the SP and LCC 0-0 work being done, make sure the proper precautions are taken so that the SP reboot will not affect accessibility;
- All connected hosts have logged in paths to both SPs.
- Path fail-over is set up correctly.
Should this process need to be done on both LCCs, then repeat the process on the peer SP after the first SP is back online and waiting for 10 minutes
Additional Information
When replacing hardware, make sure to follow the correct procedure generated from SolVe.
Products
VNX1 Series, VNX2 SeriesArticle Properties
Article Number: 000065874
Article Type: Solution
Last Modified: 30 May 2024
Version: 3
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