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January 8th, 2026 01:02
Poweredge R740xd - ERROR Disk 12 in Backplane 1 on RAID Controller 1
Hello,
Please help me identify the problem.
Physical Drive slot 12 failure, primary troubleshooting performed including changing with the Hard Disk Drive. Still the slot is failed to activate.
HDD Specs
Type: HDD
Speed: 7200 RPM
Size: 12TB
Interface: 6 Gbps SATA
Sector Size: 512 B
No Events found!



DELL-Joey C
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January 8th, 2026 07:44
Hi,
Can you provide us more details about the current drives that are installed in the server? Also, if the replacement drive a Dell certified drive? You mentioned the slot is failed to activate, where did you see that? From OMSA or from the RAID controller BIOS? Can you also provide us what RAID controller is the server using?
EDS-seph
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January 9th, 2026 00:54
@DELL-Joey C
Can I send you some logs of the Server?
DELL-Joey C
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January 9th, 2026 06:22
Hi,
We don't usually do log analysis in the public community. If you do have logs, you can create a case online from our support site to obtain a technical support.
If you do have logs, you can paste it here about the first few 10 lines. Do let me know the information that I posted above, probably we might know what's the issue.
EDS-seph
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January 9th, 2026 06:35
@DELL-Joey C
HDD Details:
Vendor: TOSHIBA
Model: TOSHIBA MG07ACA1
Part Number: 753F0
Type: HDD
Speed: 7200 RPM
Size: 12TB
Interface: 6 Gbps SATA
Sector Size: 512 B
DELL-Joey C
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January 9th, 2026 07:39
Hi,
Usually if the RAID status is failed, it would not be able to rebuild. Can I check if data is accessible from the RAID array? What is the RAID level of the array? You mentioned also in the first post, Disk slot 12 failure and event logs showing Disk 0 is faulted, hence you might be having double fault. You would not be able to rebuild if there is double fault.
EDS-seph
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January 12th, 2026 00:41
@DELL-Joey C
How can I check if it is accessible from the RAID array?
EDS-seph
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January 12th, 2026 00:44
@DELL-Joey C
RAID level of the array is RAID-6
DELL-Joey C
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January 12th, 2026 06:41
Hi,
What I mean is that if there is data in the RAID-6 array, is it accessible?