PPDMA DM5510 CTL40 Multi-bit ECC error on <arg1>

Observed Alert.

• CTL40 Alert

Multi‑bit Error Encountered During I/O Operations.

An error involving multiple bits has been detected while performing a read or write operation. The error‑correction algorithm recalculates parity data for each operation.

• Multiple‑bit errors indicate that more than one data bit is corrupted.
• Single‑bit errors can often be corrected by the algorithm, preserving parity.
• Multi‑bit errors generally signify data loss.
• If the multi‑bit error occurs during a read, the underlying disk data may still be intact.
• If the multi‑bit error occurs during a write, the data being written is lost.

Replace the Dual inline Memory Module (DIMM). The DIMM is a part of the controller battery pack. Refer to the storage hardware documentation for information about replacing the DIMM. You may have to restore data from backup.

To gather a log bundle, follow the directions in this KB article: PowerProtect Data Manager Appliance DM5500: How to Collect an Administrative Log Bundle

Contact Dell Support:  If the issue persists, contact Dell Customer Support using the contact method described in your product documentation. Provide the serial number, error code (CLT40), and log bundle for faster assistance.