Hello,   The DSET application has been retired for some time now. I wouldn't recommend it to anyone for any purpose.   You can try clearing the hardware log using racadm clearsel, but I would also open your Windows Services pane and restart the 4 DSM services that power OpenManage. If the error continues to show, I'd review the PERC log to get more detail on what the backplane is doing. Restarting the server is a good idea, but these are some steps you can take without impacting your production cycle.
Hi A client has an R515 running Windows 2008 R2 with a RAID-10 array of 8 drives plus 2 hot-spares, 2 of the drives failed duringthe last 2 weeks and were replaced by the hot-spare drives but a further one started to report potential failure. Last night I replaced all 3 drives and all drives are now showing green but the Backplane is still showing degraded. After searching for a resolution I found some comments that clearing the Hardware Log resolves the issue so I did this from OMSA (v8.5) but the fault was still displayed; further searching established that running DSET would clear the fault if OMSA couldn't so I downloaded DSET v2.1.0 from the R515 support page. This has now been installed but when run it reports the following error (but still completes and creates a report):      * Starting Data Engine...     ERROR: Could not start Data Engine service.dcstor32dset     There was a problem loading the OMSA driver/service The Backplane is still reporting that it's degraded in OMSA. I've checked that the BIOS, firmware and drivers are up-to-date and have a server reboot scheduled for Friday evening in the hope that this clears the warning but what else can I do to resolve this?
PowerEdge R515 - Faulty RAID drives replaced but Backplane still reporting 
degraded