Not able to detect the hardware RAID for IBM DS 3512 Express attached to an IBM System X server via SAS on Red Hat Enterprise Linux 6.2

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 6.2

Issue

  • IBM DS 3512 Express attached to an IBM System X server via SAS.
  • Configured single RAID 5 array the DS 3512, but the Server still only sees it as individual hard drives.
  • It shows up in Disk Utility under the SAS host adapter with SAS Expander.

Resolution

  • Check the Cable connections with the RAID.

Root Cause

  • Cable was plugged into wrong slot on RAID device.

Diagnostic Steps

  • Check connections.

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