Troubleshooting the PERC H755 RAID Controller

Last Updated : Aug 12, 2025 |

About this task

Use this procedure to troubleshoot PERC H755 RAID controller problems on the R660xs server. Virtual drive and hard disk drive (HDD) problems may occur if the RAID Controller is failing or has failed.

Caution:

This troubleshooting procedure can erase data stored on the virtual drive. Before proceeding, if possible, back up files from the virtual drive.

Procedure

Ensure that all drives are fully seated into their drive bay slots. If a drive is reinserted wait for it to rebuild (approximately 30 minutes) before reinserting another drive. Rebuild status can be verified from iDRAC Storage menus or RAID System set-up menus.
Note:

ASP R6.0.0.1 or later includes perccli debugging capabilities. For more information, see Chapter 31: Dell R660xs and R640 perccli debugging.