Dell Unity: Destination NAS server was promoted and started to respond the requests from clients

Summary: Destination NAS server was promoted and started to respond the requests from clients. (Dell Correctable)

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Symptoms

  1. End users complained about data loss, or the file system became read-only.
  2. Further troubleshooting showed that the replication destination was promoted by mistake and took over the CIFS and NFS traffic.
  3. In some situations, this symptom may disappear automatically after a period of time, and then came back again later.

 

Cause

The replDest flag of the destination NAS server was set to no by mistake:

uemcli -u admin -securePassword /net/nas/server -id nas_x set -replDest no

When the destination NAS server came up, it broadcast the MAC address and took over the traffic from the production. End users started to access the read-only destination file systems.

After a period of time, when the clients and routers refresh their ARP tables, the production NAS server may take back the traffic automatically.

 

Resolution

Remove/override the IP address at the destination NAS server, or set the replDest flag back.

uemcli -u admin -securePassword   /net/nas/server -id nas_x set -replDest yes

 

Affected Products

Dell EMC Unity Family

Products

Dell EMC Unity Family
Article Properties
Article Number: 000050520
Article Type: Solution
Last Modified: 13 Jan 2026
Version:  4
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