A RAID 5 4T disk erro of MSA2050

[Ioiris]

There was a 4T disk error which bothered me for many days.

We team borrowed a same disk and replaced the error one,then the new disk light showed green.

But the MSA 2050 Still showed  RAID 5 not available,the new disk could't rebuild automatically.

We tried to add Global Spare by the "Pool theme", but to our surprise, "Add disk group" option couldn't be selected.

In the "System theme" panel we can find the disk which group was not assigned with 0 spare, other normal two disks had added group dgA01, and added into pool A.

To the MSA system, i'm a freshman,could your technical experts can give me some assist?

[Harshitha_K]

Hi @Ioiris ,

Please try these steps:

1. Check Disk and RAID Status

   • In MSA SMU web interface, check Disk Groups (dgA01) and Pools status.
   • Confirm RAID group shows as “Degraded” (not “Failed”).

2. Assign or Replace Disk in Disk Group

   • In Disk Groups, try to manually add the new disk to dgA01.
   • Look for “Replace Member Disk” or “Add Physical Disk” options.

3. Set as Global Spare

   • In System > Disks, select the new disk and set it as a Global Spare.
   • The system should use the spare for automatic rebuild.

4. Review System Events/Logs

   • Check for error messages or warnings in System > Events/Logs.
   • Resolve any disk compatibility or firmware errors.

5. Firmware Update

   • Make sure the MSA 2050 firmware is up to date.

6. Physical Check

   • Ensure the replacement disk matches the failed disk model and capacity.
   • Reseat the disk to confirm connection.
     
     Thank you!