[LU-15965] Backup-Restore when one of the hard drive on the MDT failed.

• Type: Question/Request
• Resolution: Done
• Priority: Critical
• Environment: Dell EMC Redhat 7.4, IML version 4.0.3. Consist of IML server, 1 head node, 72 compute nodes, 1 MDT, MDSs, OSSs, and OSTs.
• Assignee: Andreas Dilger
• Reporter: Loan Thai

Description

Hello,

One of the hard drives on MDT will fail soon.  We need to replace it.  

The question is after replace the failed hard drive, should the Metadata will be rebuilt automatically or do we have to run something to recover the metadata?  We have IML ver 4.0.3.  Should we  backup the DB before replacing the failed HD?  Please advice.

Thanks.