UCS C220 M4 HDD/Raid Troubleshoot

[roan710]

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Good morning, techies!

I just got a new Raid Card installed and have 8 HDD installed into the server. However only drive bays 5-8 show up, drives 1-4 do not show up but I have switched them around and always only bay 5-8 show up. I see that the backplane cables are good and conencted. On the front panel, all 8 drives have an LED of steady green

Does anyone have any information on how to troubleshoot this? thank you so much sincerely

[marce1000]

 - @roan710   Check if these info's can help you : https://www.cisco.com/c/en/us/support/docs/servers-unified-computing/ucs-manager/215857-troubleshoot-ucs-raid-controller-issues.html

  M.

[Kirk J · Accepted solution]

The required UCS-220CBLHBA8= cable kit has one Y-cable with a mini-SAS HD double connector on one end and two mini-SAS HD single connectors on the other end.

There is also a cable: UCS-220CBLMR4= which only drives 4 drives.

What raid controller are you using?

Either we have incorrect cable/SAS controller for 8 drives, or there is issue with 1st "A" backplane  sas port.

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/c/hw/C220M4/install/C220M4/raid.html#35928

Kirk...