Hello     It sounds like there may be some communication issues. If you physically disconnect HDD 0:1 does it stop the odd behavior you are seeing in the controller BIOS? Do you have another HDD to test with? You could also try testing the HDD in another slot like 0:2 if it is available.   Yes, setting the drive as a hot spare is a valid means of rebuilding a drive into an array. You can either set it as a hot spare or drill down to the physical drive in the object list. In the options for the drive you should have an option to rebuild. Thanks
After replacing the failed drive it did not start to rebuild nor did it show up in OMSA. In OMSA it shows the container as degraded but never sees a drive 1 to try and use. There seems to be some instances of instability after reboot into 3di in that when in container util and manage container setting sometimes it shows no container and sometimes it shows the container but obviously with only drive 0:0. Drive 0:0 was tested with no errors using scandisk. Server always boots ok with 0:0 so far but can't seem to get a drive to be seen in OMSA although in the bios it is seen in container util/manage container. it is telling me that it sees a drive that needs to be initialize and it shows as 0:1. We were able to use disk util and "verify media" for drive 0:1 with no errors. Since the container was not seeing drive 0:1 as part of it we did initialize drive 0:1 via the bios with no issue but never rebuilds and OMSA never sees drive 0:1. I am not sure that by initializing the drive now I have created another issue or caused the RAID config on drive 0 to be changed now. This is an old box as you know and not many options for the 3di as I can see. While in SCSI select util we did not see auto failover option at all as my docs show this as an option for the 3di. I have a spare server to play with soon or even swap MB in the event the 3di has a problem. It does have firmware via OMSA 2.8-1 build 6098 but need to confirm latest at Dell support site for this server. I have seen from reading that a replacement drive for the failed drive 0:1 has to be added as a hot spare but have not tried yet and curios to know if this is a true statement and the drive must be added as hot spare to rebuild the mirror. Also if OMSA will see this drive so that it can be added as a hot spare since it does not show this drive right now. Did not mean to write a book. Any replies appreciated.
PE 2550, 3di controller with Raid 1, two drives 0:0 and Failed drive 0:1