Hey NoamAS.   The process of a reseat is non-destructive. But as you never know what may happen it's always good to have a backup in the backhand.    A reseat means removing and installing the part. Please take a look in the user's guide here ([URL]   But, when you say that the error moved with the hard drives it is more likely that the hard drives are the problematic part and not the backplane.   Consider getting a replacement of the drives instead of the backplane.   BRStefan
Hello everyone ,    I have PowerEdge R740 .  Currently it has the following configuration :  SSDx2 (240GB each ) configured with RAID 1 (BOSS 1) . This SSD has the OS on it . SASx2 (300GB each) used for temporary data SASx6 (1.2TB each) used for big data storage . Those SAS drives configured on PERC H730P with RAID 5   I have good another 4 SAS HD from the same exact model (But 2.4TB instead 1.2TB) . I have added all the new 4 HDs to the front panel along with the others . The problem is 2 of them are blinking green and don't show up on IDRAC (9). Moreover the battery icon turned orange the the "i" button blinking blue . If I press on it it blinks orange . I have searched in the forum and also googled it . according to DELL 's website it means " drive is being identified or is being prepared for removal." . It doesn't seem like an issue to me but still I can't see them .  Eventually I would like to create another RAID 5 from the new additional  4 drives (Which I know how to do using IDRAC) I have attached 2 short videos showing the exact problem .  Blinking Green HDs Battery icon Any help would be much appreciated 
2 new SAS HDs are blinking Green on PowerEdge R740