ServeRAID M5014 SAS/SATA controller fails to rebuild RAID-5 array

Troubleshooting

Problem

ServeRAID M5014 SAS/SATA Controller, Option part number 46M0916, intermittently fails in rebuilding a Redundant Array of Independent Disks 5 (RAID 5) array. The IBM Dynamic System Analysis (DSA) IMPI log will show the following output: | IPMI:(03/28/2012 13:06:35) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Assertion: Drive Fault | IPMI:(03/28/2012 13:04:29) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Assertion: Rebuild/Remap in progress | IPMI:(03/28/2012 13:03:07) Disk or disk bay 1 (DriveSlot (Bay) - Drive 1): Deassertion: Drive Presence | IPMI:(03/28/2012 12:44:28) Disk or disk bay 0 (Drive Slot (Bay) - Drive 0): Assertion: In Critical Array | IPMI:(03/28/2012 12:44:28) Disk or disk bay 2 (Drive Slot (Bay) - Drive 2): Assertion: In Critical Array | IPMI:(03/28/2012 12:44:28) Disk or disk bay 4 (Drive Slot (Bay) - Drive 4): Assertion: In Critical Array

Resolving The Problem

Source

RETAIN tip: H205825

Symptom

ServeRAID M5014 SAS/SATA Controller, Option 46M0916, intermittently fails in rebuilding a Redundant Array of Independent Disks 5 (RAID 5) array.

The IBM Dynamic System Analysis (DSA) IMPI log will show the following output:

	\| IPMI:(03/28/2012 13:06:35) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Assertion: Drive Fault \| IPMI:(03/28/2012 13:04:29) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Assertion: Rebuild/Remap in progress \| IPMI:(03/28/2012 13:03:07) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Deassertion: Drive Presence \| IPMI:(03/28/2012 12:44:28) Disk or disk bay 0 (Drive Slot (Bay) - Drive 0): Assertion: In Critical Array \| IPMI:(03/28/2012 12:44:28) Disk or disk bay 2 (Drive Slot (Bay) - Drive 2): Assertion: In Critical Array \| IPMI:(03/28/2012 12:44:28) Disk or disk bay 4 (Drive Slot (Bay) - Drive 4): Assertion: In Critical Array \| IPMI:(03/28/2012 12:44:26) Disk or disk bay 5 (Drive Slot (Bay) - Drive 5): Assertion: In Critical Array \| IPMI:(03/28/2012 12:44:26) Disk or disk bay 1 (Drive Slot (Bay) - Drive 1): Assertion: Drive Fault \| IPMI:(03/28/2012 12:44:26) Disk or disk bay 3 (Drive Slot (Bay) - Drive 3): Assertion: In Critical Array

Affected configurations

The system may be any of the following IBM servers:

System x3200 M3, type 7327, any model
System x3200 M3, type 7328, any model
System x3250 M3, type 4251, any model
System x3250 M3, type 4252, any model
System x3250 M3, type 4261, any model
System x3400 M2, type 7836, any model
System x3400 M2, type 7837, any model
System x3400 M3, type 7378, any model
System x3400 M3, type 7379, any model
System x3500 M2, type 7839, any model
System x3500 M3, type 7380, any model
System x3550 M2, type 4198, any model
System x3550 M2, type 7946, any model
System x3550 M3, type 4254, any model
System x3550 M3, type 7944, any model
System x3620 M3, type 7376, any model
System x3630 M3, type 7377, any model
System x3650 M2, type 4199, any model
System x3650 M2, type 7947, any model
System x3650 M3, type 4255, any model
System x3650 M3, type 7945, any model
System x3690 X5, type 7147, any model
System x3690 X5, type 7148, any model
System x3690 X5, type 7149, any model
System x3690 X5, type 7192, any model
System x3755 M3, type 7164, any model
System x3850 X5, type 7143, any model
System x3850 X5, type 7145, any model
System x3850 X5, type 7146, any model
System x3850 X5, type 7191, any model

The system is configured with one or more of the following IBM Options:

ServeRAID M5014 SAS/SATA Controller, Option part number 46M0916, replacement part number (CRU) 46M0918

This tip is not software specific.

The prior 12.12.0-0047 firmware for the ServeRaid M5014 is affected.

Solution

This issue is fixed beginning in ServeRAID M5014 SAS/SATA controller firmware version 12.12.0-0047 - 12.12.0-0098.

The file is available at the following URL:

http://www.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5073015

Additional information

The root cause of this symptom is due to ACK/NAK timeouts while the ServeRAID M5014 SAS/SATA controller is rebuilding a RAID 5 array.

ServeRAID M5014 SAS/SATA controller firmware version 12.12.0-0047 and later fix the symptoms by improving the recovering mechanism.

When the symptoms occur, it is safe to update ServeRAID M5014 SAS/SATA controller firmware while the RAID 5 array in critical state.

Document Location

Worldwide

Operating System

System x:Operating system independent / None

System x Hardware Options:Operating system independent / None

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Tips

ServeRAID M5014 SAS/SATA controller fails to rebuild RAID-5 array - IBM System x