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I recently inserted a new drive and marked it as Good. When I then set it to be a Hot Spare, it refuses to rebuild.

[root]# MegaCli -PDList -aALL| grep Firm
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Unconfigured(good), Spun Up
Firmware state: Unconfigured(bad)
Firmware state: Hotspare, Spun Up
Firmware state: Online, Spun Up

After I set it, it just remains a Hot Spare and never rebuilds.

[root]# MegaCli -PDHSP -Set -PhysDrv \[32:2\] -aALL

Adapter: 0: Set Physical Drive at EnclId-32 SlotId-2 as Hot Spare Success.

Exit Code: 0x00
[root]# MegaCli -PDList -aALL| grep Firm
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Hotspare, Spun Up
Firmware state: Unconfigured(bad)
Firmware state: Hotspare, Spun Up
Firmware state: Online, Spun Up

What did I do wrong? For the record, the Unconfigured(bad) is 32:4 and it is a bad drive that failed. Nothing that was already marked as Hot Spare kicked in and I confirmed the auto setting to go from Hotspare to Online was set.

[root]# MegaCli -pdrbld -showprog -physdrv\[32:2\] -aALL

Device(Encl-32 Slot-2) is not in rebuild process

This is a Dell R710 PowerEdge server.

  • Are all disks SAS? – Mikhail Khirgiy Mar 28 '17 at 15:17
  • Your question appears to show the issue. Its a mix of SATA and SAS drives. Any way to allow them to mix and match? PD Type: SATA PD Type: SATA PD Type: SAS PD Type: SATA PD Type: SAS PD Type: SATA – Alby Mar 28 '17 at 16:15
  • Maybe raid firmware update will help you, but chance is small. You can create new logical drive on sata disks and join it with old logical drive by LVM or by another same software service. – Mikhail Khirgiy Mar 28 '17 at 16:57
  • Mikhail: Thank you. I will work to just swap out the SAS with SATA drives and that should solve my issue. Thanks for bringing this discrepancy to my attention. – Alby Mar 28 '17 at 17:25
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Per Mikhail's comments, the issue is SAS vs SATA.

In short, SAS & SATA drives in a RAID are incompatible without jumping through hoops and crossing fingers. As such, it's easier to just make all the drives SATA on my Dell R710 Poweredge vs. some custom hack to allow for a mix of SAS/SATA.

  • Can you explain in more detail? – chicks Mar 29 '17 at 2:29
  • I'm not sure there is much more detail to offer. In short, SAS & SATA drives in a Raid are incompatible without jumping through hoops and crossing fingers. As such, it's easier to just make all the drives SATA on my Dell R710 Poweredge vs. some custom hack to allow for a mix of SAS/SATA. – Alby Apr 1 '17 at 12:54

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