HP DL 380 case of hard disks

[noor Parkar_1]

i am working on this case from the last one week. but unable to find proper solution for this. so i need your support

case:One DL 380 SERVER g3 reported hard disk failure. a constant red light appeared on the disk.i removed the disk and connected it back. it started working. as per user it will fail again. so i replaced a new disk but i saw the red light constant appeared again after two minutes.i restarted the server before connecting this new hard disk. it prompted two options. one F1 and F2. F2 is to fail drive and F1 is to keep drive disabled. so i pressed F2 and it started booting from one harddisk. i rebooted again this time with the new hard disk. i saw it didnot ask for recovery of hard drive. it started booting but with the Red light flashing initially and then failed(constant red led).i checked two new hard disk same issue.
i changed hard disk backplane also but its same.
but when i connected old hard disk back. it started rebuilding.and then it will complete rebuilding and will operate normally. The new hard disk are showing red flashing and then failure why???????
i upgraded firmware also to 8.50 but there is no harddisk firmware. i tried with 7.91 firmware. it also didnot ask for hard disk firmware upgradation. saying not needed.

existing harddrives are with version HPB2 B AND NEW HARD DISK i tried is hpb2 9 and i tried hpb1 harddisk also but it is same


what could be the issue

[ess]

Hi my friend
if you check raid halted. you must check hard drive whit raid model 6400 or 641.
please check and test hard drive and raid.
possibility raid onboard is unbecoming.

[noor Parkar_1]

I replaced system board also so so the controller which is embedded is also replced. but when i replaced failed drive.it is still showing red flashing and then constant Red is coming. what could be the problem