x3550 M5 Hard drive not detected

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sk_

New Member
Jul 4, 2022
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Greetings,

I have an x3550 M5 with 8 x 2.5" drives (2 SSDs + 6 HDD). The server was working fine until it didn't...

Hard disk 1 is no longer detected, IMM shows no errors. At first I thought the SSD had failed so I replaced it, still nothing (also checked the SSD, it's working fine in another machine). I replaced the HBA (N2215) still nothing, only 7 disks are show in UEFI. Upgraded, UEFI, Firmwares to the latest version, donwgraded... nothing worked the server can only see 7 drives instead of 8, Bay 1 is dead. Double checked/re-seated the cables, disks etc..

So is this a backplane issue and in need of replacement? or is it something else


Thank you in advance